No. 728,805. Patented May 19, 1903
UNITED STATES PATENT OFFICE
FRED M. LOCKE, OF VICTOR, NEW YORK.
SPECIFICATION forming part of Letters Patent No. 728,805, dated dated May 19, 1903.
Application filed January 29, 1902, Serial No. 91,721. (No Model.)
To all whom it may concern:
it known that I, FRED M. LOCKE,
of Victor, in the county of Ontario, in the State of New York, have
invented new and useful Improvements in Insulators, of which the
following, taken in connection with the accompanying drawings, is a
full, clear, and exact description.
invention relates to improvements in the construction of insulators for
have observed that in high-tension insulators the current uses all the
foreign substances which collect on the surface of the insulator as a
conductor, and the leakage is increased in proportion to the amount of
such foreign substances which collect, provided they can be utilized to
arc around the support. I
also find that by using an insulator having eaves-trough terminating in
the spout I make a more efficient insulator for the reason that all of
the water is conducted to one point and at some distance outwardly from
I also find that as the voltage increases the water upon the top
of the insulator is given an impetus which throws or hurls it farther
from the top through the spout rather than allowing it to drop in a
perpendicular line near the cross-arm and that such action of the
current upon the water also tends to agitate the foreign substances
which have been collected and throws them, with the water, from the
surface of the insulator and keeps it clean. In other forms of insulators the water is forced inward onto
the pin and arm and causes leakage at much lower voltage.
My further object is to construct an insulator with a high-resisting surface to provide against surface-leakage on account of the necessary small area and this in connection with a broad top or top in the form of a flattened cone which may have eaves-troughs conduct the water to a remote point from the support and the center piece, which is kept dry, or at least the major upper portion of it, by reason of the broad top, which increases the arcing distance between the lateral edge of the top and the lower end of the center piece.
further object is to protect by a mechanical patent the construction
shown in design patent issued to me May 28, 1900, No. 34,741.
In actual use I find that in insulators of such a construction as above set forth there is only a loss of five per cent in two hundred miles of transmission; and to that end, therefore, of producing such an insulator my invention consists in the several new and novel features of construction and operation, which
are hereinafter described, and specifically set forth in the claims hereunto annexed. It is constructed as follows, reference being had to
the accompanying drawings, in which--
1 is an isometric elevation of my insulator complete.
Fig. 2 shows a section on line x x, Fig. 1.
Fig. 3 is a top plan view of Fig. 1.
The complete insulator comprises a top a, somewhat in the form of a
flattened cone, having the usual grooves a' in the top, and comprises
the laterally-extending skirt b, which may be circular or any other form
desired, and having a trough b' upon its outer edge formed by the flange
c, which terminates in a spout C', which extends laterally and
downwardly at some considerable distance from the flange and trough for
the purpose of conducting the water as far from the support as possible
and at the same time avoiding the construction of a spout which is
liable to become easily broken off either when shipping the same or when
in use. The top a is also
provided with a downwardly-extending petticoat d, as shown in Figs. 1
and 2, and the whole constructed of porcelain, glass, or similar
material. The other member
of the insulator e comprises a sleeve, its upper end adapted to be
secured into a recess formed by a petticoat d, where it may be fused
provided the material of each part is made of material so as to admit of
fusing, or it may be otherwise secured therein.
The lower member e s adapted to rest upon a pin e', and an
insulating sleeve or pin may be interposed between the lower member e
and the cross-arm, or it may be secured in any other manner desired.
It will thus be seen that by extending the center piece d down a
below the top I prevent the arcing of the current from the outer edge of
the skirt forming the top of the support.
It will also be observed that by constructing a broad skirt b I
am able to keep the major portion of the centerpiece d dry and thereby
prevent arcing and creeping.
thus described my invention, what I claim, and desire to secure by
Letters Patent, is--
An insulator having an upper surface in the form of a flattened cone and
a substantially vertical flange about its edge forming a gutter for
collecting and discharging the water from said surface.
An insulator having an upwardly projecting flange about its edge forming
a gutter and means for discharging collected water said means extending
a distance from said flange.
witness whereof I have hereunto set my hand this 24th day of January,
FRED M. LOCKE.
M. W. BURKE.