US2202707A - Trolley wire support - Google Patents

Description

May 28, 1940.

s. s. MATTHES TROLLEY WIRE SUPPORT Filed May.24 1939 Imventor SA'MUEL S. M! 1T7THES W m \k Gttorneg Patented May 28, 1940 UNITED STATES PATENT OFFICE TROLLEY WIRE SUPPORT Application May 24, 1939, Serial No. 275,476

6 Claims.

My invention relates to a support for a trolley wire and particularly to a support combined with strains or anchor means whereby the trolley wire maybe anchored against movement in either longitudinal direction or may be anchored or dead ended against movement in one direction.

My improved device is especially adapted for use in overhead special work and at curved portions of the overhead work.

My invention is an improvement over the strain or anchor device shown in my Patent 2,013,355 of September 3, 1935.

In that device the means for gripping the wire is much the same as in my present improved device, but my presentdevice has an entirely different means for connecting the strain or anchor wire or wires thereto.

In my present device the strain wire or wires are held in the same or substantially the, same plane at the clamp as the trolley wire, that is, at the point where the strain wires leave the device so that the tension of the pull-01f wires will not tend to move the clamp to distort the trolley wire.

My invention resides in the new and novel construction, combination and relation of the parts hereinafter described and shown in the accompanying drawing.

In the drawing:

Fig. 1 is a side view in elevation of my invention attached to a trolley wire, except for a broken-away portion.

Fig. 2 is a top view of Fig. 1.

Fig. 3 is an end view of Fig. 1.

Fig. 4 is a section on the line 44 of Fig. 1.

Fig. 5 is a section on the line- 5-5 of Fig. 1.

Fig. 6 is a top view of my invention shown as attached to a pairof anchor wires associated therewith and extending in opposite directions whereby the trolley wiremay be anchored against movement in either longitudinal direction.

In the preferred embodiment of my invention, I employ a clamping portion l comprising a pair of elongated members 2 and 3, each provided with lips 4 which engage with the groove 5 in the trolley wire 6. One of the members, as for instance, the member 2 has along its upper edge a longitudinally disposed and projecting tongue 1 which engages a longitudinally disposed groove 8 along the'upper edge of the member 3. The tongue I cooperates with the groove 8 to hold the members against relative transverse movement in a horizontal plane, thus assisting to maintain the lips 4 in proper alignment while clamped to a trolley Wire.

The members 2 and 3 are provided with a plurality of registering openings of which one opening in the member 3 of each pair is threaded to receive the threaded hollow and slotted screw 9.

These screws hold the members 2 and 3 in clamping position on the trolley wire 6.

The member 2 is also provided with the upwardly and inwardly projecting threaded bosses I, I0 having their axes a-a. obliquely disposed to the longitudinal axis of the lips 4 and also to the longitudinal axis of the trolley wire 6.

Mounted in the threaded bosses ID are set screws I I having cup-shaped ends, one portion of the edge of which will bite into the upper surface of the trolley wire 6 as shown at the broken-away portion of Fig. 1.

This insures a positive grip and hold of the device upon the trolley wire in which the cutting edge of the set screws H bite into the trolley wire with a reduced amount of pressure normal to the trolley wire axis, depending upon the angle the axis aa. makes with the trolley wire. Thus the pressure tending to push the trolley wire,

from between the lips 4 of the device is greatly reduced without decreasing the holding power between the device and the wire.

The member 3 is provided with notches I3 along its upper edge and into which project the lugs Ill, overhanging the member 3.

A threaded boss projects from one member (2) at the longitudinal center to receive a supporting hanger for the device.

In place of the usual strain lug or lugs towhich the strain or anchor wire is attached, I employ 3.7

plane or at the same level as that of the trolley wire.

The lateral spread of the arms I5 is to allow clearance for the passage alongthe wire 6 of a current collector of either the trolley wheel or sliding shoe type. I

The members 2 and 3 are each provided with a pair of registering grooves forming the transverse grooves l9 and adjacent the arms IE to receive the strain or anchor cables.

The anchor or cable I! is shown in Fig. 6 as comprising a loop formed of cable with a fitting 2| at each end which interlocks with sockets 22 of the yoke fitting 23. An opening or eye 24 is provided for the attachment thereto of a cable, rod or other suitable device. The arms of the cables I! and I8 extend longitudinally in the direction taken by the trolley wire.

The ends of the cable I8 are also provided with the fitting 23 in the same manner as the cable [1. As shown in Fig. 6, the center of the loop or bight of the cable IT is positioned in the groove l9 and the arms of the cable are then brought down and under the ends of the arms it across the bridging members id for resting in the grooves 6.

The cables I"! and i8 do not necessarily require being equipped with the end fittings 2| and 23 but may be of sufficient length to be led back to the point of anchorage and there secured in any suitable manner, however, it is found desirable to furnish the device with and without the cable members I? and/or 52 and the yoke 23 to meet commercial requirements.

This arrangement places the pull of the anchor cables l'i and/or 8 at a point substantially even with that of the trolley wire thus avoiding the tendency of the tension of the pull-oil wires to move the clamp to distort the trolley wire.

If itis desired to merely anchor the trolley Wire againsta strain in one direction then only one anchor cable l! or !8, would be employed.

While I prefer to use the grooves l9 and 20 for the bight of the cables ill and i8, still the device is operable without these grooves.

Having disclosed my invention, I claim:

1. A trolley wire support and strain device comprising an elongated body split longitudinally and having lips to engage the trolley wire and means for securing the parts of the body together and to the trolley wire, obliquely disposed means movable into engagement with the trolley wire to hold it against longitudinal movement relative to the wire, an integrally formed arm projecting laterally from each part of the body and in opposite directions from the body, each arm having a longitudinally disposed groove in substantially common plane with the lips of the body to receive the longitudinally disposed portions of a looped anchor cable and a transverse groove adjacent the union of the arms with the body to receive the bight of the anchor cable whereby the bight of the looped cable may rest in the transverse groove and the longitudinally disposed portions rest in the longitudinal grooves and project longitudinally along the trolley wire to a point of anchorage and means integrally formed with one part of the body to secure the device to a support.

2. In a trolley wire device, the combination with an elongated body formed of two longitudinally disposed parts to receive and clamp onto a trolley wire and means to draw the parts together, one means located substantially at the longitudinal center of the body and the body also provided with means to prevent longitudinal movement relative to the trolley wire, of means to secure to the body a looped anchor cable, the said means comprising oppositely disposed pairs of arms integrally formed with the body, one pair of arms projecting from each part of the body, the said arms of each pair spaced longitudinally of the body and projecting laterally and downwardly permitting access to the aforesaid central means, the lower end of the arms of each pair connected and having a longitudinally formed groove to receive a loop-shaped anchor cable and the body having a transverse groove adjacent the union of the arms therewith to receive the cable bight whereby the cable may be positioned in the said transverse groove and its extensions looped downwardly and along the longitudinal grooves of the arms and extendin' the direction of the trolley wire to a point of anchorage.

3. In a strain device for a 'trolley'wire comprising a pair of members for attachment to a, trolley wire and means for securing the members the said loop shaped element positioned with its 7 bight engaging the said members transversely thereof on the side of the member opposite the trolley wire and the extensionsof the said bight engaging, the ends of the arms and held thereby substantially level with the trolley wire andin a plane other than vertical and means attached to the ends of said extensions to secure thesame in fixed relation and having means to receive a cable.

4. In a strain device for a trolley wire-comprising a pair of elongated members to clamp onto the wire and means to secure the members to the wire to prevent longitudinal movement relative to the Wire in either direction, the combination with the members of a loop shaped element having extensions from the bight thereof extending in the direction of the trolley wire axis, means on the members to hold the center of the bight in position thereon and means projecting sideways from'each member in opposite direction and engaging the loop extensions adjacent the ends of the bight to depress the extensions and hold them in a plane substantially in alignment with' the trolley wire and holding means to receive the ends of the said extensions to hold them in fixed relation and having means to receive other means to attach the holding means to an anchorage.

5. In a trolley wire device, a the combination with an alongated body formed of two longitudinal parts to receive and clamp atrolley wire and having means to prevent longitudinal movement of the device relative. to thewire, of means to detachably secure a strain member thereto, the said means comprising arms of equal length, one integrally secured to each member and projecting sideways therefrom in opposite directions, means on the body to hold the-bight of the strain member in position thereon and the arms arranged to hold the extensions of the strain member in position in a substantially common plane with the trolley wire other than a vertical plane.

6. In a trolley wire device, the combination of an alongated member formed of two parts to re-,

ceive and clamp a trolley wire and having means to resist longitudinal movement of the body relative to the wire, a pair of strain members associated with the body, each member provided with' a bight and two substantially parallel portions portions of the strain members and hold them in a substantially common plane with the trolley wire.

SAMUEL S. MATTHES.

.60 extending substantially parallel to the body and

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