US1240263A - Overhead-trolley suspension and feed-in ear. - Google Patents

Description

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OVERHEAD TROLLEY SUSPENSION AND FEED-IN EAR.

APPLICATION FILED OCT-18 I915.

PatentedSept. 18, 1917.

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OVERHEAD-TBOLLEY SUSPENSION AND FEEID-IN EAR.

To all whom it may concern:

Be it known that I, JAMES SCOTT, citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Overhead-Trolley Suspensions and Feed-in Ears, of which the following is a specification.

This invention pertains to an overhead trolley suspension and feed-in ear especially designed for use in center pole construction, substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of the ear or device in its present preferred form, and Fig. 2 is a side elevation thereof. Fig. 3 is a side elevation broken OK at the ends and sectioned out at the center to the middle thereof. Fig. I is a cross section on line H, Fig. 2, looking inward but omitting hanger and wire shown as broken off in Fig. 2. Fig. 5 is a side elevation of a modification of the ear, sectioned at the middle and Fig. 6 a plan view as hereinafter fully described.

The so-called ear or embodiment A is of the usual length and general outline in respect to size and style except as hereinafter noted, and provided with the usual U-shaped trough or channel 2 at its bottom adapted to have the direct trolley wire clamped therein and provided with strengthening ribs along its top.

The said suspension and feed-in ear, socalled and referred to herein also as a device, is shown in Figs. 1 to 4 as having an internally threaded boss 2, adapted to engage a hanger h therein, a section of which is seen in Fig. 2, and also in this instance as having a series of sharp serrations or teeth I) extending upward about its edge and engaged by the flat annular shoulder on said hanger and which has a stem screwed into said boss. I-Ieretofore it has been the universal practice, so far as I am aware, to make the top edge of the said boss plain, and while a fairly good connection can be made in that way I have found that by the use of sharp teeth or projections substantially as shown I can make a materially improved connec tion. In the first place the hanger can be turned nearly or quite a quarter turn deeper than formerly because the points of the teeth will yield that much under pressure and then they serve as a locking means to engage and hold the hanger. The importance of Specification of Letters Patent.

Patented Sept. 18, 191?.

Application filed October 18, 1915. Serial No. 56,463.

this difference in favor of the toothed edge 6 lies in the fact that the device in a suspended position is subject to constant vibration and strain at this joint, and unless it be securely fastened will work loose. By means of the sharp serrations or teeth this danger is reduced to the minimum. In other words the connection is made secure and permanent.'

Another new and original improvement in the said device is the provision for securing the feed wire 3. It will be especially 11oticed that the said wire is seated in a comparatively deep socket 4, which stands at an inclination outward from the boss 2 and apart therefrom as seen in Figs. 1, 2 and 3, so as to clear the span wire while the ear is being secured to the hanger, and said socket is provided with slots 5 about two-thirds the depth thereof which divide the socket into four equal quarters lengthwise. The inner dimensions of the said socket are such as to afford a comfortable entrance and seat for the wire and, being entered, the upper portion of the socket is clamped firmly on the wire and the wire is secured by means of solder 5, which fills the said slots and practically incorporates the wire with the socket about its sides and in the pocket 8 at its bottom.

I-Ieretofore it has been the practice to employ screws or like means to secure the wire, but screws are very liable to work loose and permit the wire to pull out. By means of solder and the slotted socket I am enabled to make an absolutely secure and permanent union.

In Figs. 5 and 6 I show a form of ear A in which the hanger is omitted and the socket 4: for the wire 3 is placed at the middle of the ear. This style of ear is employed only in places where feed of current on the line is wanted and may be at any needed point on the line. The slots 8 in the socket at are present here also, and the pocket and bore 8 for the solder at the bottom of the socket.

Respecting the hanger h it will be seen that it has a threaded stem adapted to screw into the said boss and an annular shoulder at the base of the stem resting upon the teeth or serrations b.

What I claim is:

1. An ear for trolley wires as described having an internally threaded boss and saw tooth shaped serrations about the top edge thereof in combination With a hanger having a threaded stem engaged in said boss and a flat shoulder bearing upon said serrations.

2. As a new article of m'ainifactnre an ear for trolley Wires having an open channel lengthwise from end to end in its bottom, a

boss at its middle to secure a hanger thereinand an inclined and slotted socket for a feed Wire apart from said boss toward one end of the ear the bottom of said socket having an opening communicating With said channel.

3. A suspension and feed in ear for trolley lines having a base provided With an open channel for a trolley Wire and a'slotted socket for a feed ire provided with an opening in its bottom coninnuiicating with said channel.

4. A suspension ear for trolley lines having an open channel lengthwise in its bottom for a trolley Wire and a slotted socket for a v JAMES SCOTT. Witnesses GEO.- E. iKRIOKER, F. C. HARROLD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents;

Washington, D. G. 7

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