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To all whom it may concern: Be
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. This
invention relates to insulators for electric conductors. My object is to
improve their construction and increase their insulating efficiency and
general utility; and to that end my invention consists in the several
new and novel features of construction hereinafter described and which
are specifically set forth in the claims hereunto annexed. Insulators
heretofore have been constructed higher than they are broad, but I have
found that these insulators have been defective in that they do not
produce the best results, owing to their short diameter and spread.
I have therefore found in actual practice that it is necessary to
increase the spread with respect to the height, and this for two
reasons: First, the increase of its efficiency as an insulator, and,
second, that it allows me to use a shorter, and therefore a stronger,
insulating pin, which is particularly desirable in high-voltage-power
transmission. I
have observed that in the ordinary insulators, as above described, the
edge comes so close to the supporting-pin or the support upon which it
is mounted that the current arcs from the edges of the insulator to the
pin or support upon which it is mounted.
To obviate this difficulty, I have constructed an insulator as
broad or broader than it is high and provided it with one or more skirts
or petticoats. This construction of an insulator is absolutely new and
the results obtained have greatly increased Its insulating powers, as I
have been able to discover from actual practice. I may also provide the insulator with a bead or trough upon
its periphery to conduct the water to certain points, so that the
dripping will take place at points remote from the support upon which
the pin is mounted. I am
thereby enabled to prevent the water from accumulating upon the entire
lower edge of the outer skirt, which would other wise
form a conductor for the current, which when it had passed around to the
point nearest the support would otherwise arc across.
Reference is hereby made to the accompanying drawings, in which--
Figure 1 is a side elevation of an insulator which embodies my invention. Fig. 2 is an inverted view thereof; and Fig. 3, a plan view of an insulator, parts being broken away. a is the insulator, constructed of glass, porcelain, or other insulating maternal, and may have its outer skirt oblong, oval, or rounded, as |
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shown in Fig. 2 of the drawings, and being as broad or broader than it is high, which allows me to use a much shorter insulating-pin, which is therefore more substantial. This is particularly desirable in high voltage power transmission, as a strong supporting-pin is as essential as good insulation. The
insulator may be provided with semicircular troughs or grooves b,
extending around the periphery of the skirt, inclining toward the points
of the skirt c having the greatest breadth for the purpose of conducting
the water where it may pass off at points most remote from the support
and thereby avoiding the possibility of preventing the current from
arcing thereto, as would be the case where the skirt is circular in form
and the moisture allowed to accumulate equally around the lower edge.
In Fig. 1 I show tie-wire lugs or bosses e, and f is a
recess in the top of the insulator, in which the wire is adapted to
rest.
g and h are petticoats or skirts, any number of
which may be used.
Having described my invention, what I claim, and desire to secure
by Letters Patent, is--
1. An
insulator having its outer skirt oblong, and means for conducting the
moisture toward its lateral extremities. 2.
An insulator having a skirt constructed oblong, and means for conducting
the moisture toward its lateral extremities, its top being provided with
tie-wire, lugs, or bosses. 3.
An insulator which is as broad or broader than it is high, and which is
provided with semicircular troughs or grooves d extending around the
periphery of the skirt, and inclining toward the points of the skirt
having the greatest breadth, substantially as specified. 4.
An insulator which is oval or oblong in shape, and which is as broad or
broader than it is high, and which is provided with semicircular troughs
or grooves d' extending around the periphery of the skirt and inclining
toward the points of the skirt which have the greatest breadth,
substantially as shown. 5.
An Insulator having a spread greater than Its height and shaped so as to
be somewhat elliptical, and provided with a groove or trough upon its
periphery so as to discharge the water at the ends of the longest
diameter, substantially as described. 6.
An insulator having a spread greater than its height, and having its
skirt provided with means for conducting the moisture toward Its lateral
extremities, substantially as shown. In
wittiness whereof I have hereunto set my hand this 7th day of December
1896.
FRED M. LOCKE. In
presence of- H.
P. DENISON, MARY
A. FRANKLIN. |