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To all whom it may concern: Be
it known that we, HENRY M. BROOKFIELD,
a citizen of the United States, and a resident of New York city, in the
county of New York, and SERAPHIN KRIBS,
a subject of the Emperor of Germany, and a resident of New York,
(Brooklyn,) in the county of Kings, State of New York, have invented
certain new and useful Improvements in Presses for Molding Insulators or
Similar Articles, of which the following is a full, clear, and exact
specification, reference being had to the accompanying drawings, which
form a part hereof. The
invention relates to presses for manufacturing insulators, such as are
used on telegraph-lines, and other similar articles; and it is
especially adapted for use in making what are known as
"screw-insulators," although the press may be utilized for
other purposes. One
object of the invention is to provide a press that will for the most
part be automatic in its operation-- That is to say, most of the parts
of which can be operated by power. Another
object of the invention is to increase the capacity and efficiency of
the press, whereby a larger number of insulators or other articles can
be made within a given time. The
invention is designed also to increase the accuracy and certainty of the
operation of the machine, to produce an article of improved quality, and
to cheapen the cost of manufacture by reducing the amount of labor
required to run the machine, as well as in other ways. The
invention consists, first, in the combination, in such a molding press,
of a suitable mold, an actuating rod adapted to be reciprocated up and
down above the mold, a compensating lever connected with the actuating
rod by any suitable intervening mechanism, plungers connected with the
ends of the compensating lever, and a spring connection interposed
between the compensating lever and the actuating-rod or some part
thereof, and suitable means for operating the actuating rod, whereby the
plungers are forced into the mold by the actuating-rod, but the spring
connection between the plungers and the rod enables the stroke of the
plungers to be varied somewhat and to be thereby adapted to the varying
amounts of glass or other material originally inserted in the cavity or
cavities of the mold. The
invention also consists in. the combination, with some or all of the
devices above referred to, of means for connecting the actuating-rod
with the driving-shaft whereby the rod and plungers are operated
mechanically. The
invention also consists in the combination, with some or all of the
parts already named, of a follower connected with the actuating-rod by a
spring connection, whereby the follower and the plungers are both
operated by the actuating-rod, but do not move rigidly with that rod,
having the capacity of varying their stroke according to the character
of the mold and the amount of glass or other material supplied thereto. The
invention also consists in the particular construction of the
actuating-rod and the intermediate devices by which it is connected with
the plungers and the follower and the mechanism which connects the
actuating-rod with the driving-shaft. The
invention also consists in the combination of a revolving table having
molds placed thereon at regulated distances, and means for automatically
revolving the table with an intermittent motion, and means for
automatically stopping the table in the proper predetermined positions,
so that the molds will be under the actuating-rods or other devices for
inserting or removing the plungers for shaping the material, and means
for inserting and removing the same, whereby the table is automatically
revolved at proper intervals and at the end of each partial revolution
is stopped at the proper position for the insertion or removal of the
plungers or for some other step in the operation of molding the
insulator or other article. The
invention also consists in the combination, with a suitable mold, of an
actuating-rod for inserting a screw-plunger in the mold, a crew-plunger
adapted to be connected with the actuating-rod, and a revolving spindle
for unscrewing or removing the plunger from the mold, and means for
connecting the spindle with the driving-shaft, so as to cause the
spindle to be revolved continuously, and means for reciprocating the
spindle up and down toward or from the mold. The
invention also consists in certain special features of construction of
the spindles for removing the plungers from the mold. The
invention also consists in certain other features of construction and
combinations of parts hereinafter more fully explained. While
all the devices herein shown and described are adapted for use in one
complete machine, some of the parts are capable of use in connection
with other devices or in other combinations. Referring
to the drawings, Figure 1 is a top or plan view of the press.
Fig. 2 is a vertical section on the line x x of Fig. 1 looking in
the direction of the arrows. Fig.
3 is a side elevation of the press looking from the bottom of Fig. 1 and
having some parts broken away or not shown in the figure. Fig. 4 is a
detail view of the first actuating-rod and its connected parts.
Fig. 5 is a vertical section of the device shown in Fig. 4. Fig. 6 is a horizontal sectional view on the line y y of Fig.
5. Fig. 7 is a bottom view
of the plungers and followers and follower-plate shown in Fig. 4.
Fig. 8 is a detail view of the second actuating-rod.
Fig. 9 is a vertical section view of Fig. 8.
Fig. 10 is a view of a device for fastening the screw-plungers to
the lower ends of the formers. Fig.
11 is a detail view of the spindles for removing the plungers.
Fig. 12 is a sectional view showing the devices for connecting
the lower ends of the spindles with the plunger.
Fig. 13 is a side view of the same device, showing the end of the
spindle above the plunger prior to insertion in the latter.
Fig. 14 is a detail view showing the ratchet-wheel for revolving
the table. Fig 15 is a side
view of the same parts, the reciprocating rod being partly broken away.
Fig. 16 is a detail view, partly in section, of the dog for
locking the table. Fig. 17 is a detail view of the cam for opening the
molds. Fig. 18 is a similar
view of the cam for closing the molds.
Fig. 19 is a top view of one of the molds in a closed position,
the position of the parts when the mold is open being represented in
broken lines. Fig. 20 is a vertical section of the mold, taken on the
line 2 2 of Fig. 21, looking in the direction of the arrows.
Fig. 21 is a partial top view of the mold, showing the jaws in an
open position. Fig. 22 is a
vertical section on the line w w of Fig. 19 looking in the direction of
the arrows. Figs. 23 to 28 contain a series of sections of the mold,
illustrating the different steps in the operation of the press and the
manner in which the article is gradually molded. Similar
numbers represent corresponding parts in the different figures. Referring
to the drawings, 1 is the bed or carriage upon which the press is
mounted. We prefer to provide the bed with wheels or rollers 2, as shown
in Fig. 2, so that the press can be conveniently moved from one place to
another. 3
is a central post or standard, from which the various parts of the
machine are supported. 4
is a table which is adapted to revolve around the central post.
This table is provided with a suitable number of molds 5 5, which
are placed thereon at regulated distances, so that when the table is
moved intermittently the molds will be brought in succession into the
proper positions under the various actuating-rods and spindles.
In the form shown in the drawings the table is provided with six
molds placed at equal distances from one another. 6
6 are supporting-arms projecting from the post 3 and adapted to support
the first actuating-rod and its connected parts.
We prefer to fasten these arms to the central post in the manner
illustrated in Fig. 3, so that by loosening the bolts these arms can be
turned upon the post as a pivot, and the position of the actuating-rod
can thereby be adjusted, if desired. 7
is the first actuating-rod. This
rod is adapted to move up and down in bearings in the arms 6 6.
The rod is made hollow, as shown In Fig. 5. 8
is an inner or intermediate rod which is adapted to enter and slide up
and down in the hole in the rod 7. 9
is a pin passing through the rod 8 and projecting beyond that rod on
either side and extending into slots 10 10 in the actuating-rod.
This pin acts as a stop device to limit the downward motion of
the rod 8 in the actuating-rod 7 and to cause the rod 8 to be lifted
with the rod 7 when the pin 9 comes into contact with the lower end of
the slots 10 10. 11
is a coiled spring inserted in the recess or hole in the actuating-rod
and adapted to press down upon the upper end of the rod 8. At its upper
end the spring bears against the nut 12.
This nut is held in proper place vertically by means of the
screw-bolt 13, which engages with the thread on the inside of the nut
12. The bolt 13 is
supported by the nut 14, which engages with a thread on the inner
surface of the upper end of the actuating-rod 7.
The bolt is fastened to the nut 14 in any suitable way-as, for
example, that shown in Fig. 5. In
this case the nut 14 is clamped between the bead of the bolt and a
smaller nut immediately under the nut 14. The head of the bolt is
provided with a cut to receive the end of the screw driver, so that the
bolt 13 can be easily turned. By
turning the bolt 13 the nut 12 is forced up or down on the bolt, and in
this way the tension of the spring 11 can be regulated.
The nut 12 is provided with a lug 15, which projects into a slot
in the side of the actuating-rod, (see Fig. 6,) and thereby prevents the
nut 12 from turning with the bolt 13.
16
is a compensating lever pivoted at its middle point to the rod 8 and
connected at its ends by means of pivoted links with the plunger-rods
17, which carry at their lower ends the plain plungers 18. These plain
plungers are made of such a shape as to properly mold the glass and to
produce the desired form and size of cavity or recess into which the
screw-plunger is afterward inserted.
To the lower end of the rod 8 is connected a guide-plate 19,
having openings through which the plunger-rods slide. 20
is a plate fastened to the lower end of the actuating-rod 7. In the form
shown this plate is circular in shape and is provided with six holes or
apertures, through which the follower-rods 21 pass and slide.
The follower-rods carry at their lower end the follower-plate 22,
which carries and supports the followers 23. 24
are coiled springs encircling the follower-rods and at their lower ends
bearing against collars 25, secured to the follower-rods, and at their
upper ends against the plate 20. Two of the follower-rods, preferably
those at the sides, are made longer than the others and slide in
bearings 20, formed in projecting portions of the frame.
These two rods are also provided with the collars 27, which are
fastened to the rods and which act as a stop device, against which the
plate 20 strikes in its upward motion, thereby lifting the follower rods
and follower-plate. 28
is a grooved cross-head which is fastened to the actuating-rod in any
suitable way. 29
(see Fig. 4) is a bearing-block made to fit the groove in the cross-head
28 and slide back and forth in said groove. 30
is a disk fastened to the shaft 31 so as to revolve therewith.
This disk carries a pin 32, which passes through a bearing in the
block 29 and is adapted to turn therein. The shaft 31 (see Fig. 3) is
mounted in suitable bearings in arms which are supported from the
central post or standard. This
shaft is provided with gear-wheel 33, which meshes with the gear-wheel
34 on the shaft 35. The shaft 35 carries the gear-wheel 30, which meshes
with the gear-wheel 37 on the shaft 38. The shaft 38 is provided at one
end with the sprocket-wheel 39; which is connected in any suitable way
with the driving-shaft of the machine or with any source of power.
As the disk 30 is revolved the actuating-rod 7 is reciprocated up
and down mechanically and automatically and is given a positive and
regular motion. When the
actuating-rod is forced down, the intermediate rod 8 is also forced
downward by the spring 11, and the plungers are forced into the mold.
The compensating lever 10 enables one plunger to be driven down
farther than the other, so as to compensate for the different quantities
of material that may have been supplied to the two recesses of the mold.
When the two plungers have been forced into the mold so as to
completely fill the two cavities of the mold, the downward motion of the
rod 8 ceases, and any further downward motion of the rod 7 simply tends
to compress the spring 11, the rod 8 sliding upward in the rod 7.
If the plungers were connected rigidly with the rod 7, the
plungers would necessarily be forced down to the same point at each
stroke of the actuating-rod, and if a larger supply of glass had been
put into the mold than had been proper the mold or the plungers or some
part of the machine would necessarily have been broken.
By making the parts in the manner described and interposing the
spring 11 we make it possible to operate the plungers by power and at
the same time to give the plungers a variable motion, so as to prevent
the breaking of the machine. When the actuating-rod is forced down, the follower-plate,
with its followers, is also forced down until it strikes the top of the
mold, as shown in Fig. 24. Any
further downward motion of the actuating-rod tends merely to compress
the coiled springs 24. Referring
to Figs. 1, 8, and 9, 40 is a connecting-arm securely bolted or fastened
at one end to the top of the grooved cross-head 28 and fastened at its
other end to the second actuating-rod 41.
This rod 41 reciprocates up and down in bearing 42, which is
supported by the arms 43, that project outwardly from the central post
or standard. The inner ends
of these arms are preferably fastened to the post or standard in the
manner already described-to wit, by means of bolts and caps, so that by
loosening the bolts the arms can be turned or swung on the post 3 as a
center and the position of the rod 41 can thereby be adjusted.
The rod 41 is made hollow similarly to the rod 7.
(See Fig. 9.) 44 is an intermediate or inner rod.
45 is a compensating lever pivoted at its middle point to the rod
44 and connected at its ends by means of pivoted links with the
plunger-rods 46. These rods
46 slide in bearings in a guide-plate 47, carried by the lower end of
the rod 44. 48 are formers
attached to the lower ends of the rods 46 and provided with recesses
adapted to receive the screw-plungers 49. The formers are provided with
pins 50, (see Fig. 10,) and these pins carry the spring-pieces 51.
The upper end of the screw-plungers is formed with a recess or
cavity adapted to receive the pin and its spring-pieces. When the
screw-plunger is forced into the former, it is held in place in the
former by means of the spring-pieces 51.
52 is a coiled spring placed inside of the rod 41 and adapted to
bear down upon the upper end of the rod 44. The same means is employed
for regulating the tension of this spring, as has been already described
in connection with the actuating-rod 7, and consists of the nut 53,
engaging with the screw-threaded bolt 54 and provided with the lug 55
and the nut 56, adapted to engage with a thread on the inner surface of
the rod 41, the nut 56 being secured to the bolt 54 by any suitable
means. 57 is a cross-head
fastened in any suitable way to the actuating-rod 41, so as to move up
and down with that rod. Cross-head
57is provided with holes or openings through which the follower-rods 58
slide. These follower-rods carry at their lower ends the
follower-plate 59, which in turn carries the followers 60.
61 are coiled springs encircling the follower-rods and bearing at
their lower ends against collars 62 on said rods and at their upper ends
against the cross-head 57. The follower-rods are provided also with
collars 63, which act as a stopping device against which the cross-head
57 strikes in the upward motion, whereby the plate and followers are
lifted with the actuating-rod. The
intermediate rod 44 is provided with a pin 64, projecting through said
rod and extending at both ends into slots 65 65 in actuating-rod 41.
This pin acts as a stop to limit the downward motion of the rod 44 in
the actuating-rod 41 and to cause the rod 44 to be lifted with the rod
41; The screw-plungers are inserted in the formers 48 when they are in
the highest position. The
actuating-rod 41 is then forced down, carrying with it the formers,
plungers, and followers. When
the follower-plate strikes the top of the mold, the follower-plate and
its rods cease their downward motion, and any further downward motion of
the rod 41 simply compresses the spring 61. The Referring
to Figs. 1, 3, 11, 12, and 13, 66 are arms fastened to the central
standard by means of caps and bolts, as shown in Fig. 3, so that by
loosening the bolts these arms can be turned upon the standard as a
center. 67 is a connecting-piece joining the outer ends of the arm 66.
68 is a plate fastened by means of bolts or otherwise to the
piece 67, and in such a way that the plate 68 can be adjusted in a
vertical direction. 69 69
are two arms projecting from the plate 68 and carrying at their outer
ends the frame-pieces and bearings for supporting the spindles by means
of which the screw-plungers are removed from the molds.
70 70 are the spindles. These
spindles are mounted in suitable bearings, as shown in Fig. 11, and are
adapted not only to revolve in these bearings, but also to be
reciprocated vertically therein. The
upper end of each spindle is provided with a head 71, in which the upper
end of the spindle is adapted to turn.
72 is a chain connecting the spindle with a weight 73. The chain
passes over the grooved pul1ey 74. The lower end of the chain is
connected to the head of the spindle in any suitable way.
In the form shown in Fig. 11 two pivoted links 75 are employed
for this purpose. 76 is a
lever for reciprocating the spindle in a vertical direction.
This lever is provided with a handle 77 and passes between the
links 75 and at its rear end is pivoted to the link 78, which in turn is
pivoted at its lower end to the frame of the machine.
79 is a beveled gear-wheel which is feathered to the spindle, so
as to revolve therewith, but so as to permit the spindle to move up and
down in the gear-wheel without disconnecting the same.
80 is a shaft mounted in suitable bearings in the frame and
provided with the two beveled gears 81, which mesh with the gear-wheels
79. 82 is a sleeve which is
adapted to turn loosely on the shaft 80 except when it is connected
therewith by means of the clutch 83.
This clutch can be of any suitable variety. The sleeve 82 is provided with a hollow pulley 84, with which
the clutch 83 is adapted to engage and is also provided with the
gear-wheel 85. A
similarly-constructed sleeve 86 is mounted on the other end of the shaft
80. It is provided with a
clutching device 87, a hollow pulley 88, and a gear-wheel 89.
The clutches are operated by means of the rod 90, (see Fig. 1,)
adapted to slide in suitable bearings in the frame of the machine and
provided with an arm 91 at each end.
The arm 91 is forked at its outer end and this forked portion
projects into a groove in the clutch.
92 is a handle connected with the rod 90 for operating the same.
93 is a coiled spring on the rod 90 for moving that rod in one
direction. When by means of
the handle 92 the rod 90 is moved to the right, referring to Fig. 11,
the clutch 87 is engaged with the pulley 88, and the sleeve 80 is
thereby connected with the shaft 80.
When the handle is
released, the coiled spring 93 moves the rod 90 in the other direction,
releases the clutch 87 from the pulley 88, and engages the clutch 83
with the pulley 84 at the other end of the shaft, as a result of which
the shaft 80 and the sleeve 82 are made to revolve together.
94 is a shaft suitably mounted in bearings in the frame of the
machine and provided with the gears 95 and 96, adapted to mesh with the
gears 89 and 85, respectively. Shaft
94 is also provided at one end with the sprocket-wheel 97. This wheel is
connected by means of the chain 98 with the sprocket-wheel 99 on the
shaft 100. (See Figs. 2 and 3.) The
shaft 100 is carried in a bearing in the arm 101.
This arm is fastened to the standard 3 in any suitable way, as by
means of caps and bolts. By loosening the bolts the arm 101 can be
turned upon the standard. The inner end of the shaft 100 is provided with a beveled
gear 102, which meshes with a beveled gear 103,which is adapted to turn
loosely on the central standard. The
gear 103 is driven by the gear 104, (see Fig. 3,) which is mounted upon
the shaft 38. When the arm
101 is turned upon the central standard for the purpose of adjustment,
the gear 102 simply rides upon the gear 103 without becoming disengaged
there from. It
will be observed that the gears 85 and 89 on the shaft 80 are different
in size and also that the gears 95 and 96 on the shaft 94 are likewise
different in size. As a
result of this Construction the speed of the shaft 80 can be varied.
By operating the clutch so as to engage the sleeve 86 with the
shaft 80 that shaft will be driven by the gear 95.
By reversing the clutching mechanism, so as to engage the clutch
83 with the sleeve 82, the rod 80 will be driven from the gear 96, which
will give the shaft 80 a higher rate of speed.
The sizes and arrangement of these gears can be modified to any
extent, so as to secure any desirable rate of speed.
As a result of this construction the spindles 70 are revolved
continuously from the driving-shaft of the machine. The
device for engaging the lower end of the spindle with the screw-plunger
is shown in Figs. 12 and 13. The
lower end of the spindle is recessed, as shown, and is provided with a
dog 105, which is pivoted in the recess, as shown in Fig. 12.
This dog is provided with a tooth 106, projecting from its lower
end, adapted to catch in a slot 107 in the upper end of the
screw-plunger 49. The dog
is also provided with a projecting lug 108; upon which bears an annular
weight 109, which encircles the spindle.
This weight is slotted on one side at 110, and a projecting piece
111 of the dog extends into this slot, so as to cause the weight 109 to
revolve with the spindle. The lower end of the spindle is also provided
with the lugs 112, which project into the grooves 113 in the top of the
screw-plunger, so as to cause the plunger to revolve with the spindle.
When the mold has been brought into proper position under the
spindles, the spindles which are revolving in the proper direction are
forced down by the levers 76 until the lower ends of the spindles are
forced into the recesses in the upper end of the screw-plungers.
The lugs 112 enter the grooves 113 and cause the screw-plunger to
revolve with the spindle. At the same time when the tooth 100 strikes
the edge of the screw-plunger the tooth is forced back until it slips by
the upper end of the plunger, and this raises the projection l08 and
lifts the weight 109. When the tooth 106 has been depressed far enough
to be brought opposite the slot 107 in the plunger, the weight 109 turns
the dog back on its pivot and forces the tooth 106 into the slot 107,
thus engaging the plunger with the spindle.
The levers 76 76 are then released, as a result of which the
weights 73 raise the spindles and with them the screw-plungers.
114 are bars projecting upward from the arm 69 and supporting at
their upper ends the rod 115, upon which the pulley 74 revolves.
116 (see Figs. 1 and 3) is a strengthening-bar connecting the
part of the frame which carries the spindles with the arm 101, which
carries the shaft 100. The
bar 110 is made in two parts, so as to be adjustable.
This construction enables the supporting-arms 66 and the arm 101
to be turned upon the central standard together, so as to adjust the
position of the spindles and bring the in over any desired part of the
press without disconnecting the operating parts. Referring
to Figs. 1, 2, 14, 15, and 16, 117 is a rod for operating the devices
for revolving and stopping the table.
This rod is mounted in suitable bearings 118 in the frame of the
machine and is adapted to be reciprocated back and forth therein.
119 (see Fig. 14) is a link pivotally connected at one end with
the rod 117 and at the other end with the two plates 120.
These two plates are pivoted so as to turn loosely on the shaft
121. 122 is a pawl pivoted on a pin fastened to and connecting the
plates 120. 123 is a
ratchet-wheel fastened to the shaft 121, 50 as to turn therewith, and
provided with teeth so spaced as to give the table the desired
intermittent throw. In the
form shown the ratchet is provided with six teeth placed at equal
distances from one another. The
pawl 122 is made to engage with the ratchet-teeth by means of the spring
124. The shaft 121 is
provided at its lower end with the gear-wheel 125, which meshes with the
gear-wheel 126, which is fastened to and turns with the table.
When the rod 117 is moved to the left in Fig. 2, the pawl 122 is
moved backward around the shaft 121 and made to engage with the next
tooth of the ratchet 123. When
the rod 117 is moved to the right, the ratchet is turned, and thereby
the table is revolved one-sixth of a circle, a sufficient distance to
move a mold from one position to the next position for example, from
underneath the first actuating-rod to a position under the second
actuating-rod, and so on. The arm 117 is provided with a cam-bearing or
arm 127, which is securely fastened to the arm 117.
l28 is a cam of suitable form mounted on the shaft 31, 50 as to
revolve with that shaft. This
cam presses against the cam-bearing 127 and forces the rod 117 to its
extreme right-hand position, thereby revolving the table, as already
explained. The arm 117 is
forced in the other direction by the coiled spring 129, which operates
to bring the arm 117 and the pawl into a position where the pawl will
engage another tooth of the ratchet 123.
130 are bars fastened at one end to the rod 117 and at the other
end to a sleeve 131, which is adapted to slide on the rod or dog 132, as
shown in Fig. 2. The two bars are united at the middle point by means of a
bolt 133 for the purpose of strengthening the connection. The lower end
of the bar is connected to the sleeve 131 in any suitable way-for
example, by means of pins projecting from the sleeve 131 and passing
through slots in the lower ends of the bars.
The dog 132 is adapted to reciprocate in bearings 134, carried by
an arm projecting from the bed of the machine. The
dog is also provided with a collar 135, fastened to the dog.
130 is a coiled spring encircling the dog and bearing at one end
against the collar 135 and at the other end against the sleeve 131.
137 is a collar fastened to the dog 132 at the outer end beyond
the sleeve 131 and made adjustable on the dog.
It has an arm 138, which projects between the two bars 130.
The table is provided with recesses 139, placed at regulated
distances, into which recesses the inner end of the dog is adapted to
enter, so as to stop the table at the proper position.
The recesses are put at such points around the revolving table
and the dog is so timed in its operation that when the table has been
revolved sufficiently so that the molds are brought under the
actuating-rods and spindles the dog is thrust into one of the recesses
and the table is thereby stopped at the proper place.
When the rod 117 is reciprocated to the right, as shown in Fig.
2, by means of the cam, the sleeve 131 is pressed against the spring
136, and the dog is thereby forced into the recess 139 with a yielding
pressure. When the rod 117 is forced in the other direction by means of
a spring 129, the sleeve 131 is moved outward away fro in the table and
strikes the collar 137 and withdraws the dog from the recess 139. Referring
to Figs. 1, 3, and 19 to 22, 5 is a mold which in the best form of my
invention is made in the form shown in the drawings. 140 is the base or
bottom piece of the mold. This is attached to the table in any suitable
way-- for example, as shown in Fig. 22, by means of a bolt.
This bottom piece is provided with two recesses or cavities 141
to adapt it to form the lower ends of the insulators or other articles
to be molded. The upper
part of the mold consists of three jaws-- the rear jaw 142, forming the
rear half of the upper portion of the mold and provided with two
recesses or cavities, as shown, and the two front jaws 143.
The two front jaws together are adapted to form the front half of
the upper part of the mold. Each of the front jaws is provided with a
suitable recess or cavity, as shown. The front jaws are pivoted at their ends to the ends of the
rear jaw 142. The front jaw is extended beyond the pivot, so as to form
a short projecting arm 144. This arm is pivoted at its end to the link
145. The links 145 are preferably made in two pieces bolted together, as
shown, so that their length can be properly adjusted. The two arms 145
are pivoted at their rear ends to the cross-head 140.
This cross-head is supported and guided by the rod 147, which
slides back and forth in a bearing in the block 148, which is securely
fastened to the revolving table. The rod 147 being guided by its bearing
in the block 148 causes the cross-head to move back and forth in a
straight line. The cross-head 146 is connected by means of a pivoted link
149 with the two-armed pivoted lever 150.
This lever carries at its rear end a cam-roller 151. 152
are guiding-pins securely fastened to the bottom piece of the mold and
projecting into a slot formed between the front and rear jaws. The
front and rear jaws when closed are firmly secured to the bottom piece
by means of a dovetailed connection 153.
(Shown in Fig. 22.) The
mold is opened and closed by means of cams.
(Shown in Figs. 1, 3, 17 and is.) 154 are arms projecting from
the central standard and secured thereto, so as to be capable of being
turned on the standard as a center for the purpose of adjustment. 155
is a rod adapted to move back and forth in bearings carried by arms 151.
This rod carries a cam 156, against which the cam-roller 151 is adapted
to strike. The cam-roller
151 rides up on the outer face of the cam 156, and by this means the
mold is opened, as hereinafter explained. The cam 156 is enabled to
yield somewhat to the pressure of the cam-roller by means of the coiled
spring 157, which bears at one end against a collar 155 on the rod 155
and at the other end against one of the bearings of the rod 155.
This coiled spring tends to hold the cam 156 in its normal
position. The cam for closing the mold is shown in Fig. 18. 159 are arms supported from the central standard and capable of adjustment thereon. These arms carry the rod 160, which is adapted to slide back and forth in bearings projecting down from the arms 159, as shown. 161 is a cam carried by the rod 160. The cam-roller 151 is adapted to strike against the rear surface of cam 161, and thereby cause the mold to be opened. The cam 161 is enabled to yield somewhat to the pressure of the cam and roller by means of the coiled spring 162, which bears alone end against one of the bearings of rod 160 and at the other end against a collar on the rod 160. The cam 156 is placed in such a position with reference to the revolving table that after the screw-plungers have been removed from the mold by the revolving spindles and the table is again revolved the cam-roller 151 strikes against the front surface of the cam 156, as shown in Fig. 1. The lever 150 is thereby rocked on its pivot so as to draw the cross-head 146 back into the position shown in broken lines in Fig. 19. This draws back the links 145 and causes the rear jaw 142 of the mold to be drawn back and the front jaw to be opened out, as shown in dotted lines in Fig. 19. The front jaws are made to open by reason of the fact that the guiding pin 152 bears against the inner surface of the front jaw and causes the front jaw to be rocked around that pin. The relative position of the front jaw and |
 |
|
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the pin when the jaws
are closed is shown
in Fig. 19, and the relative position of these parts when the jaws are
open is shown in Fig. 21; The jaws of the mold remain open for a
sufficient length of time to allow the insulators or articles to be
removed. Then the cam-roller 151 strikes the rear surface of the cam 161
and the lever 150 is rocked in the other direction, thereby forcing the
cross-head 146 forward into the position shown in full lines in Fig. 19.
In this movement of the jaws the rear jaw 142 is moved forward
until it strikes the guiding-pin 152. The forward motion of the
cross-head 146 and the links 145 still continues, which results in
rocking the front jaws on their pivots and closing them. The front jaws
are then locked together by means of the catch 163. The
general operation of the press is as follows: When the mold is closed in
the position shown at 164 in Fig. 1, a supply of molten glass or of the
material that is being molded is placed in each recess of the mold.
The condition of the mold at this time is represented in section
in Fig. 23. When the rod
117 is next moved by the cam 128, the table is revolved one-sixth of a
circle and is locked accurately in a position immediately under the
first actuating-rod 7. The actuating-rod is then depressed by the means already
described, and the plain plungers 18 are forced into the mold so as to
shape the glass, as shown in Fig. 24. The actuating-rod is then raised,
lifting the follower and the plain plungers up from the mold.
The table is again revolved a sixth of a circle in the manner
already described until the mold is brought under the second
actuating-rod and the table locked in that position.
The screw-plungers 49 have meanwhile been inserted in the formers
48, as shown in Fig.
9. At the next throw of the
actuating-rod 7 the second actuating-rod 41 is depressed and the
screw-plungers and formers are forced into the mold. In Fig. 25 the
screw-plungers and formers are represented as just about to enter the
mold. The second actuating-rod is then raised; b it the pressure of the
glass upon the screw-plungers causes these screw-plungers to be drawn
out of the formers and to remain in the articles, as shown in Fig. 26.
The table continues to revolve in the manner already described until the
mold is brought under the spindles 70 and the table locked in that
position. The spindles are
then depressed, by means of the levers 76, until the lower ends of the
spindles are engaged with the screw-plungers.
The levers are then released and the screw-plungers are unscrewed
from the articles in the mold and lifted away from the mold. The
screw-plungers are then removed from the spindles. The spindles
constantly revolve and, as already explained, their speed of revolution
can be varied by means of the clutching mechanism, so as to be made to
operate at the requisite degree of speed. The table is again revolved,
and immediately the cam-roller 151 strikes against the cam 156, which
throws the mold open. The insulators are then removed from the mold by
any suitable means. At the
next revolution of the table the cam-roller strikes the cam 161, as a
result of which the mold is automatically closed and brought back again
to the position from which it started, (shown at 164in Fig. 1.) Fig.
27 represents the position of the screw-plungers immediately after they
have been unscrewed from the mold. Fig.
28 shows the insulator completely formed and ready to be removed from
the mold. Many
important advantages are secured by our improved press, some of which
are as follows: The operation of the press is entirely mechanical and
automatic except in three respects-- namely, first, the furnishing of
the glass to the mold at the beginning of the operation; secondly, the
vertical reciprocation of the spindles for moving the plungers, which is
done by means of hand-levers, and, thirdly, the removal of the finished
articles from the mold after the mold has been opened.
The molding and compressing of the material are entirely
accomplished by mechanical devices. Hitherto
it has generally been deemed impossible to operate a press of this kind
by power, for the reason that when this is done the actuating-rod has
the same throw at every stroke, and as the quantities of glass applied
to the mold necessarily vary it was supposed that the actuating-rod, if
operated by power, would frequently cause the breaking of the mold or
the rod itself or its connecting parts, or, in other cases, would fail
td completely mold or form the article, the latter result occurring
where too small a quantity of glass has been supplied to the mold. Our
improvement enables these actuating-rods to be operated by power without
producing any of these undesirable results.
Our improved press can be operated much more rapidly than presses
have heretofore been worked and the operations being mechanical are
always accurate and certain. When
manual labor is employed to carry out these different steps imperfect
work or breaking results frequently from lack of skill or attention on
the part of the operative. These disadvantages are overcome by our invention.
By properly spacing the molds and stopping the machine
automatically in predetermined positions the molds are brought into
their operative positions underneath the actuating-rods with accuracy
and with expedition. By continuously revolving the spindles and doing
this automatically the removal of the screw-plungers from the molds is
performed rapidly and more satisfactorily. As a result of the method of
constructing and combining different parts the various actuating devices
can he easily and accurately brought to any desired position and secured
firmly therein. The method of constructing our mold enables the mold to
be easily and quickly opened and closed and enables the articles to be
readily removed there from. It
will be apparent that many modifications or changes may be made in the
machine without departing from the invention.
For example, the number of molds may be varied, or, if desired,
the first actuating-rod might be done away with and the screw-plungers
inserted directly in the glass without any previous forming of the
material. In this case the
actuating-rod that inserts the screw-plungers could be constructed
exactly as shown in the drawings, or the actuating-rod 41 could be
directly connected with the grooved cross-head 28. If desired, the
clutching mechanism connected with the devices for revolving the
spindles could be omitted and the spindles could be driven at a
predetermined and constant speed. The clutching mechanism merely enables
the speed to be changed. Again,
in the best form of our invention we combine with each actuating-rod a
compensating lever with two or more plungers.
It will be apparent that many parts of our invention might be
employed in a device in which a single plunger was connected with each
actuating-rod. What
we claim as new, and desire to secure by Letters Patent, is-- 1.
In a molding-press, the combination of a suitable mold, an actuating-rod
composed of two parts, a compensating lever connected with the
actuating-rod, plungers connected with the ends of the compensating
lever, a spring interposed between the two parts of the actuating-rod,
and means for operating the actuating-rod, substantially as set forth. 2.
In a molding-press, the combination of a suitable mold, an actuating-rod
composed of two parts, a compensating lever connected with the
actuating-rod, plungers connected with the ends of the compensating
lever, a spring interposed between the two parts of the actuating-rod,
and means for connecting the actuating - rod with the driving-shaft
whereby the rod and plungers can be operated mechanically. 3.
In a molding-press, the combination of a suitable mold, an actuating-rod
composed of two parts, a compensating lever connected with the
actuating-rod, plungers connected with the ends of the compensating
lever, a spring interposed between the two parts of the actuating-rod, a
follower connected with the actuating-rod, one or more springs
interposed between the follower and the actuating-rod, and means for
connecting the actuating-rod with the driving-shaft whereby the rod and
plungers and follower can be operated mechanically. 4.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod, the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, one or more plungers connected with the
intermediate rod, a stop device for limiting the downward motion of the
intermediate rod within the actuating-rod, and means for connecting the
actuating-rod with the driving-shaft whereby the rod and plungers can be
operated mechanically, substantially as set forth. 5.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod, the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, means for regulating the tension of the spring,
one or more plungers connected with the intermediate rod, a stop device
for limiting the downward motion of the intermediate rod within the
actuating-rod, and means for connecting the actuating-rod with the
driving-shaft whereby the rod and plungers can be operated mechanically,
substantially as set forth. 6.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, a compensating lever pivoted to the
intermediate rod, plungers connected with the ends of the compensating
lever, a stop device for limiting the downward motion of the
intermediate rod within the actuating-rod, and means for connecting the
actuating-rod with the driving-shaft, whereby the rod and plungers can
be operated mechanically, substantially as set forth. 7.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod, the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, one or more plungers connected with the
intermediate rod, a stop device for limiting the downward motion of the
intermediate rod within the actuating-rod ,a follower connected with the
actuating-rod, one or more springs interposed between the follower and
the actuating-rod, and means for connecting the actuating-rod with the
driving-shaft whereby the rod and plungers and follower can be operated
mechanically, substantially as set forth.
8.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, a compensating lever pivoted to the
intermediate rod, plungers connected with the ends of the compensating
lever, a stop device for limiting the downward motion of the
intermediate rod within the actuating-rod, a plate connected with the
actuating-rod and provided with holes through which the follower- rods
slide, follower-rods passing through said plate, a follower-plate
fastened to the lower ends of the follower-rods, coiled springs around
said follower-rods adapted to be pressed down by the upper plate and to
press the follower-plate down, and a stop device against which the upper
plate strikes so as to raise the follower-plate, and means for
connecting the actuating device with the driving-shaft whereby the
actuating-rod and plungers and follower-plate can be operated
mechanically, substantially as set forth. 9.
In a molding-press, the combination of a suitable mold, an
actuating-rod, one or more plungers connected with the actuating-rod, a
spring interposed between the plungers and the actuating-rod, a grooved
cross-head connected with the actuating-rod, a disk for reciprocating
the actuating-rod, a pin on said disk working in the groove of the
cross-head, and a shaft carrying the disk and means for driving the
shaft, substantially as set forth. 10.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod, the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, one or more plungers connected with the
intermediate rod, a stop device for limiting the downward motion of the
intermediate rod within the actuating-rod, a grooved cross-head
connected with the actuating-rod, a disk for reciprocating the
actuating-rod, a pin on said disk working in the groove of the
cross-head, and a shaft carrying the disk and means for driving the
shaft, substantially as set forth. 11.
In a molding-press, the combination of a suitable mold, a hollow
actuating-rod, an intermediate rod the upper end of which is adapted to
enter and slide in the hole in the actuating-rod, a spring placed in the
hole in. the actuating-rod and adapted to press down upon the upper end
of the intermediate rod, a compensating lever pivoted to the
intermediate rod, plungers connected with the ends of the compensating
lever, a stop device for limiting the downward motion of the
intermediate rod within the actuating-rod, a plate connected with the
actuating-rod and provided with holes through which the follower-rods
slide, follower-rods passing through said plate, a follower-plate
fastened to the lower ends of the follower-rods, coiled springs around
said follower-rods adapted to be pressed down by the upper plate and to
press the follower-plate down, and a stop device against which the upper
plate strikes so as to raise the follower-plate, a grooved cross-head
connected with the actuating-rod, a disk for reciprocating the
actuating-rod, a pin on said disk working in the groove of the
cross-head, and a shaft carrying the disk and means for driving the
shaft, substantially as set forth. 12.
In a molding-press, the combination, substantially as set forth, of a
suitable mold, the actuating-rod 7, provided with the slots 10, the
intermediate rod 8, the pin 9 adapted to move in the slots 10, the
spring 11, the nut 12 provided with the lug 15 adapted to project into a
slot in the rod 7, the bolt 13, the nut 14, the compensating lever 10
pivoted to the rod 8, the plunger-rods 17 suitably connected with the
compensating lever, plungers carried by the plunger-rods, the plate 20,
the follower-rods 21, the follower-plate 22, followers carried by said
plate the springs 24, the collars 27, the grooved cross-head 28, the
disk 30 provided with the pin 32, the shaft 31, and means for driving
the shaft. 13.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, plungers
for properly molding the material and producing cavities or recesses to
receive the screw-plungers, screw-plungers for molding a screw-thread in
the cavities or recesses of the material, and means for inserting and
removing the plungers. 14.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, plungers
for properly molding the material and producing cavities or recesses to
receive the screw-plungers, screw-plungers for molding a screw-thread in
the cavities or recesses of the material, means for inserting and
removing the plungers, and means for automatically opening the molds
when the material has been shaped. 15.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, plungers
for properly molding the material and producing cavities or recesses to
receive the screw-plungers, screw-plungers for molding a screw-thread in
the cavities or recesses of the material, means for inserting and
removing the plungers, means for automatically opening the molds when
the material has been shaped, and means for automatically closing the
molds when the articles have been removed. 16.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, an
actuating-rod for inserting the screw-plungers in the molds, one or more
screw-plungers adapted to be connected with the actuating-rod, a spring
interposed between the plungers and the actuating-rod, means for
connecting the actuating-rod with the driving-shaft, and one or more
revolving spindles for removing the plungers. 17.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, an
actuating-rod for inserting the screw-plungers in the molds, one or more
screw-plungers adapted to be connected with the actuating-rod, a spring
interposed between the plungers and the actuating-rod, means for
connecting the actuating-rod with the driving-shaft, and one or more
revolving spindles for removing the plungers, and means for
automatically opening and closing the molds. 18.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, an
actuating-rod provided with one or more plain plungers, a spring
interposed between the plunger and the actuating-rod, an actuating-rod
for inserting the screw-plungers in the molds, one or more
screw-plungers adapted to be connected with the actuating-rod, a spring
interposed between the plungers and the actuating-rod, means for
connecting the actuating-rods with the driving-shaft, and one or more
revolving spindles for removing the plungers. 19.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, an
actuating-rod for inserting the screw-plungers in the molds, one or more
screw-plungers adapted to be connected with the actuating-rod, a spring
interposed between the plungers and the actuating-rod, means for
connecting the actuating-rod with the driving-shaft, one or more
revolving spindles for removing the plungers, means for connecting the
spindles with the driving-shaft so as to revolve the spindles
continuously, and means for reciprocating the spindles. 20.
In a molding-press, the combination of a suitable mold, an actuating-rod
for inserting a screw-plunger in the mold, a screw-plunger adapted to be
connected with the actuating-rod, a revolving spindle for removing the
plunger from the mold, means for connecting the spindle with the
driving-shaft so as to revolve the spindle continuously, and means for
reciprocating the spindle. 21.
In a molding-press, the combination of a revolving spindle, provided at
its lower end with a catch adapted to engage with a screw-plunger, a
gear-wheel feathered to the spindle so as to turn with the spindle but
to permit the spindle to be reciprocated vertically therein, a shaft, a
second gear-wheel on the shaft meshing with the first gear-wheel, and
mechanism connecting the shaft with the driving-shaft of the press,
substantially as set forth. 22.
In a molding-press, the combination of a revolving spindle provided at
its lower end with a catch adapted to engage with a screw-plunger, a
gear-wheel feathered to the spindle so as to turn with the spindle but
to permit the spindle to be reciprocated vertically therein, a shaft, a
second gear-wheel on the shaft meshing with the first gear-wheel, two
sleeves on said shaft turning loosely thereon, a gear-wheel attached to
each sleeve clutching mechanism whereby either one of said sleeves can
be clutched to the shaft a second shaft provided with gears meshing with
the gears on the sleeves, and mechanism for driving the second shaft,
whereby the speed of rotation of the spindles can be varied. 23.
In a molding-press, having a central standard, the combination of a
revolving spindle provided at its lower end with a catch adapted to
engage with a screw-plunger, a gear-wheel feathered to the spindle so as
to turn with the spindle but to permit the spindle to be reciprocated
vertically therein, a shaft, a second gear-wheel on the shaft meshing
with the first gear-wheel, an arm carrying the spindle and shaft and
their connections and secured to the central standard so that it can be
turned thereon, a second arm secured in a like manner to the standard, a
shaft carried in bearings in the second arm, a gear on the inner end of
said shaft meshing with and adapted to ride upon a horizontal gear
turning loosely on the standard, means for driving the horizontal gear,
and means for connecting the two shafts, substantially as set 24. In a molding-press, the combination of the spindles
70, 70, the levers 79, weights 73, gears 79, shaft 80, gears 81, sleeve
82, clutch 83, pulley 84, gear 85, sleeve 89, clutch 87, pulley 88, gear
89, rod 90, arms 91, means for moving the rod 90, the shaft 94, gears
95, 99, sprocket 97, chain 98, sprocket 99, shaft 100, arm 101, gears
102, 103, gear 194, shaft 38, and means for driving the shaft,
substantially as set forth. 25. In a molding-press, the combination of a revolving
spindle, and means for revolving and reciprocating the same, the dog 105
pivoted in a recess in the lower end of the spindle, having the tooth
106, and the lug 108 and the projection 111, the weight 109 provided
with the slot 110, the lugs 112 on the spindle, and the screw-plunger 49
provided with the slot 107 and the grooves 113, substantially as set
forth. 26.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, plungers
for shaping the material, means for inserting and removing the plunger,
a ratchet-wheel provided with teeth so spaced as to give the table the
desired intermittent throw, a pawl adapted to engage with the
ratchet-wheel and to rotate the same intermittently, means for
connecting the ratchet wheel with the table so that the table will
revolve with the ratchet, a rod adapted to reciprocate in bearings in
the press, a link connecting the rod with the pawl, and means for
reciprocating the rod. 27.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, plungers
for shaping the material, means for inserting and removing the plungers,
a ratchet-wheel provided with teeth so spaced as to give the table the
desired intermittent throw, a pawl adapted to engage with the
ratchet-wheel and to rotate the same intermittently, means for
connecting the ratchet-wheel with the table so that the table will
revolve with the ratchet, a rod adapted to reciprocate in bearings in
the press and provided with a cam-bearing, a link connecting the rod
with the pawl, an operating-shaft, a cam on said shaft adapted to bear
against the cam-bearing on the rod, and a spring adapted to press the
rod in a direction against the cam. 28.
In a molding-press, the combination, substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, plungers
for shaping the material, means for inserting and removing the plungers,
the rod 117 adapted to move in bearings in the machine, the link 119,
plates 120, shaft 121, pawl 122, ratchet 123, spring 124, gears 125,
gear 126 fastened to the table, cam-bearing 127, cam 128, spring 129,
shaft 31 and means for revolving the shaft. 29.
In a molding-press, the combination, substantially as set forth, of a
revolving table provided with recesses at regulated distances, molds
placed therein at regulated distances, plungers for properly molding the
material and producing cavities or recesses to receive the
screw-plungers, screw-plungers for molding a screw-thread in the
cavities or recesses of the material, means for inserting and removing
the plungers, means for automatically revolving the table
intermittently, a dog adapted to enter one of the recesses in the table
so as to stop the table at the proper position, and means for operating
the dog. 30. In a molding-press, the combination, substantially as
set forth, of a revolving table provided with recesses at regulated
distances, molds placed thereon at regulated distances, plungers for
shaping the material, means for inserting and removing the plungers,
means for automatically revolving the table intermittently, a dog
adapted to enter one of the recesses in the table so as to stop the
table at the proper position, a rod adapted to reciprocate in bearings
in the press, a bar connecting the rod with the dog, and means for
reciprocating the rod. 31.
In a molding-press, the combination, substantially as set forth, of a
revolving table provided with recesses at regulated distances, molds
spaced thereon at regulated distances, plungers for shaping the
material, means for inserting and removing the plungers, means for
automatically revolving the table intermittently, a dog adapted to enter
one of the recesses in the table so as to stop the table at the proper
position, a rod adapted to reciprocate in bearings in the press and
provided with a cam-bearing, a bar connecting the rod with the dog, an
operating-shaft, a cam on said shaft adapted to bear against the cam
bearing on the rod, and a spring adapted to press the rod in a direction
against the cam. 32.
In a molding-press, the combination, substantially as set forth, of a
revolving table provided with recesses 139, molds placed thereon at
regulated distances, plungers for shaping the material, means for
inserting and removing the plungers, means for automatically revolving
the table intermittently, the rod 117, adapted to move in bearings in
the machine, the cam-bearing 127, cam 128, spring 129, bars 130, sleeve
131, dog 132, collar 135, spring 130, collar 137, shaft 31 and means for
operating the shaft. 33.
In a molding-press, the combination, substantially as set forth, of a
revolving table provided with recesses at regulated distances, molds
placed thereon at regulated distances, plungers for shaping the
material, means for inserting and removing the plungers, a ratchet-wheel
provided with teeth so spaced as to give the table the desired
intermittent throw, a pawl adapted to engage with the ratchet-wheel and
to rotate the same intermittently, means for connecting the
ratchet-wheel with the table so that the table will revolve with the
ratchet, a rod adapted to reciprocate in bearings in the press, a link
connecting the rod with the pawl, a dog adapted to enter one of the
recesses in the table so as to stop the table at the proper position, a
bar connecting the rod with the dog, and means for reciprocating the
rod. 34.
In a molding-press, the combination, substantially asset forth, of a
revolving table provided with recesses at regulated distances, molds
spaced thereon at regulated distances, plungers for shaping the
material, means for inserting and removing the plungers, a ratchet-wheel
provided with teeth so spaced as to give the table the desired
intermittent throw, a pawl adapted to engage with the ratchet-wheel and
to rotate the same intermittently, means for connecting the
ratchet-wheel with the table so that the table will revolve with the
ratchet, a rod adapted to reciprocate in bearings in the press, and
provided with a cam-bearing, a link connecting the rod with the pawl, a
dog adapted to enter one of the recesses in the table so as to stop the
table at the proper position, a bar connecting the rod with the dog, an
operating-shaft, a cam on said shaft adapted to bear against the
cam-bearing on the rod and a spring adapted to press the rod in a
direction against the cam. 35.
In a molding-press, a mold consisting of a bottom piece, a rear jaw
adapted to slide on the bottom piece and two front jaws pivoted at their
outer ends to the rear jaw, and adapted to be locked in a closed
position and to be unlocked and opened by being swung on their pivots,
substantially as set forth. 36.
In a molding-press, a mold consisting of bottom piece, a rear jaw
adapted to slide on the bottom piece, and two front jaws pivoted at
their outer ends to the rear jaw, and means for turning the front jaws
on their pivots so as to open them, and at the same time moving the rear
jaw away from the articles in the mold, substantially as set forth. 37.
In a molding-press, a mold consisting of a bottom piece, a rear jaw
adapted to slide on the bottom piece, and two front jaws pivoted at
their outer ends to the rear jaw, guiding pins attached to the bottom
piece, arms connected with the front jaws, and means for reciprocating
the arms whereby when the arms are moved in one direction the front jaws
are opened and the rear jaw moved back from its operative position, and
when the arms are moved in the other direction the jaws are closed and
brought into operative position. 38.
In a molding-press, a mold consisting of a bottom piece, a rear jaw
adapted to slide on the bottom piece, and two front jaws pivoted at
their outer ends to the rear jaw, guiding-pins attached to the bottom
piece, arms connected with the front jaws, a lever connected with the
arms, a cam-roller on the lever, and cams for moving the lever whereby
the mold is automatically opened and closed, substantially as set forth. 39.
In a molding-press, the combination, substantially as set forth, of a
revolving table, plungers for shaping the material, means for inserting
and removing the plungers, the bottom piece 140 of a mold provided with
recesses 40.
In a molding-press the combination substantially as set forth, of a
revolving table, molds placed thereon at regulated distances, means for
automatically revolving the table intermittently, means for
automatically stopping the table at predetermined positions, plungers
for properly molding the material and producing a screw-thread therein
and means for inserting and removing the plungers. In
testimony whereof we have signed our names to this specification in the
presence of two subscribing witnesses. HENRY
M. BROOKFIELD. SERAPHIN
KRIBS. Witnesses: TIMOTHY
E. RAFTERY, EDWIN SEGER. |