US319998A - Chaeles g - Google Patents

Description

(No ModeL) G. G. PERKINS. GONDUIT FOR ELECTRICAL GUNDUGTORS.

No. 319,998. Patented June 16, 1885.

UNITED STATES PATENT Orrrcr.

CHARLES G. PERKINS, OF NEW YORK, N. Y., ASSIGNOR TO THE IMPERIAL ELECTRIC LIGHT COMPANY, OF SAME PLACE.

CONDUIT FOR ELECTRICAL CGNDUCTDRS.

SPECIFICATION forming part of Letters Patent No. 319,998, dated Tune 16,1885.

Application filed January 16, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES G. PERKINS, acitizen of theUnited States,and a residentof New York, in the county of New York and State of New York, haveinvented certain new and useful Improvements in Conduits for Electrical Conductors, of which the following is a specification.

My invention relates to conduits for electrical conductors designed for attachment to walls and ceilings.

In that form of my invention which is designed to be applied to ceilings I use a strip of wood or other insulating material, which I call the carrier strip, and on opposite sides of which are cut grooves made on converging lines. The grooves are so cut as to slope downward when the carrier-strips are in position. Conducting-wires of an electric 2O circuit or circuits are placed in the grooves,

and over the wires are placed small strips of insulating material, which I call groovestrips. These strips are made to fit the grooves, though it is not necessary that they should fit tightly, inasmuch as, owing to the position of the conducting-wires and groovestrips when the carrier-strip is secured in place, their own weight tends to hold them without displacement.

In that form of my invention which is designed to be applied to walls parallel grooves sloping downward are made on the same side of the carrier-strip. The wires and groovestrips are held in position by gravity, as beiore.

In the drawings, Figure 1 represents a cross-section through 00 x in Fig. 2 of my improved device as applied to a ceiling. Fig. 2 represents a side elevation of the same. Fig. 3 is a cross-section through y y in Fig. at of my improved device as applied to a wall, and Fig. 4 is a side elevation of the same.

Similar letters refer to similar parts through out the drawings, in which to, Figs. 1 and 2,

represents the strip of insulating material called the carrier-strip, I), the upper plane surface thereof adapted to abut against the surface of a ceiling. c c are the converging grooves. .(Z d are the electrical conductors held in the grooves c c by the groove-strips e e. f in Figs. 3 and l is also a strip of i11 sulating material, provided withgrooves 9, one above the other, both arranged on the side opposite the surface abutting against the wall when attached. h are the electrical conductors, which are held in the grooves g by means of the inclosing groove-strips 2 The construction as shown in Figs. 3 and at is adapted to be fastened to walls. In this construction the groovestrips may be dis 6o pensed with, if desired, as the conductors will be held in position by their own weight.

It will be understood that the strip of insulating material a is first loosely attached to walls or ceilings by means of screws in a manner that will allow the abutting surface thereof to remain free from the wall untilthe electrical conductors d and the groove-strips e c are properly inserted in the grooves c c, after which the strip a is fastened tightly to the surface of the wall or ceiling, and the inclos ingstrips 0 e are thereby secured in position.

I amaware that strips of insulating material provided with grooves for the reception of electrical conductors which were held in position by strips having a projection on each side thereof, said projections engaging with corresponding grooves on the main strip,have been used.

The conduits heretofore used lack the advantage which I obtain from my method of construction, in that with my method the wires or conductt rs can be removed, replaced, repaired, or examined without removing the conduit from the wall or ceiling. The old Sq methods are objectionable, because the conductors have to be placed in the grooves before the whole can be attached to a wall or ceiling. These objections are obviated by my invention, which I have fully described.

hat I claim as new, and desire to secure by Letters Patent, is-

1. A conduit for electrical wires, consisting of a strip of insulating material provided with a groove or grooves, downwardly in- 5 clined and filling strips therefor, whereby the weight of the wires and of the strips retains them in place, and fastening devices therefor are avoided, as set forth.

2. The combination, with a strip of insu- 103 labing' material provided with (lownwardly- York and State of New York this 12th day of inclined grooves, of electrical conductors and January, A. D. 1884. insulating groove-strips, the conductors and A l r groove-strips being adapted to be held in po- CHARLES 1 ERkD sition by their own weight, substantially as \Vitnesses: shown and described J. A. HURDLE,

Signed at New York, in the county of New E. \VM. EDWARDS.

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