US508771A - George q - Google Patents

Description

(No Model.)

G. SEAMAN. CONSTRUCTION OF TROLLEY LINES.

No. 508,771. Patented Nov. 14, 1893.

WITNESSES:

A TTOHNEYS.

me NATIONAL LITMOGRAFHINE COMPANY:

clear, and exact description. My invention relates to an improvement in V UNITED STATES PATE T OFFICE.-

GEORGE Q. SEAMAN, OF BROOKLYN, ,NEW YORK, ASSIGNOR TO HIMSELF, ALEXANDER WILSON, AND WILLIAM J ONES, OFSAME PLACE CONSTRUCTION OF T'ROLLEY-LINES.

SPECIFICATION forming part of Letters Patent No. 508,771, dated November 14, 1893.

Application filed July 22, 1893.

ful Improvement in the Construction of Trol- 1 ley-Lines, of which the followingis a full,

the construction of trolley lines, and it has for its object 'to provide a means whereby in the event a trolley wire should become broken,

the broken section will immediately become insulated and cut out of the circuit,thus rendering the wire a dead wire and preventing it from doing harm.

A further object of the invention is to accomplish thecutting out of a broken trolley wire without disturbing the circuit at either side of the section in which the break occurs.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth and pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar figures and letters of reference indicate corresponding parts in both the views.

Figure l is a vertical section through the supports of a trolley line, the posts carrying the supports being in side elevation; and

- Fig. 2 is a plan view of the supports, one of them being broken away and in section practically on the line 2-2 of Fig. 1, disclosing the connecting arm.

. The posts A, adapted to support the wires may be of any approved construction, or any equivalent of apost may be employed. Each set of posts or equivalent supports is connected by a plate'lO, the plate extending transversely over the track, and at or nearthe center of each plate studs 11, are projected downward, the studs being arranged at predetermined intervals, and one is located usually near each side edge of the plate. The studs are provided with transversely aligning openings or slots 12, which are preferably produced in the lower portions thereof; and in the slot or recess of each stud of each post or support A, a block '13, or its equivalent thereof, is pivoted, which block is a conduc- Serial No. 481.186- (No model.)

tor of electricity; and the two blocks 13 of each post are placed in connection or in circuit by means of a switch bar 14, the said bar having guided and sliding movement in the slots of the studs 11, as shown in the drawings, the ends of the switch bar or circuit closer l4 resting upon a pair of blocks 13.

Trolley wires 15, are made to extend from a block on one post or support to an opposing block upon the next post or support, and in this manner a stretch of wireis obtained over the track to be engaged by the trolley, the only break being between the'pivotal blocks 13 of a pair, and this break may be bridged by any approved form of coupling. As the blocks 13, are pivoted they are free to turn, and upon one side edge each block 13, is provided with an insulated face 16. The feed wire 17, is run in the usual manner, and each switch bar 14. is in com munication with said feed wire. y

In the operation of the improvement, while the trolley wires are stretched the blocks to which the wires are attached arein electrical contact with the switch bars 14., and the circuit will be unbroken throughout the line;

but in the event that the trolley wire in one I from tension will be rocked upon their pivots, owing to the influence of the dropping wire, and when so rocked the insulated faces of the blocks carrying the broken wire will be brought in engagement with the switch bars 14, with which they engage,-and the circuit will be broken in the section in which the break occurs, and the broken wires will be rendered dead and harmless, while the sections at either side will not be in the least affected, since the current will pass uninterruptedly from the feed wire to the switches over the wires 18 connecting the feed wire and switches. Thus, should any break occur, the cars need only be moved the length of a sec tion, that section in which the break takes place,that is, the distance between two posts. The blocks 13, are so. weighted that when a break occurs in the wire attached to them they will turn in such manner as to bring their insulated faces uppermost, and w ll remain in that position until a new wire has been stretched upon them.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent I 1 In a trolley or like line, a trolley wire, weighted supports connected therewith, and provided with contact and insulated faces, a feed wire,'and a switch bar connecting the feed wire and trolley wire supports, substantially as shown and described.

2. In the construction of trolley and like lines, a trolley wire, rocking supports connected with the trolley wire and provided with contact and insulated faces, the tension of the trolley wire maintaining the contact faces in contact position, a switch bar or circuit closer normally in engagement with the contact faces of the trolley wire supports, a

feed wire, and a connection between the feed wire and the switch bars or circuit closers, substantially as shown and described, whereby when the trolley wire breaks, its supports will turn upon their pivots and present their insulated faces to the switch or circuit closer,

as and for the purpose specified.

3. In the construction of trolley and like lines, rocking or pivoted supports arranged in pairs, a trolley wire connected at its ends to a pair of supports, the said supports being provided with contact and insulated faces, circuit closers or switch bars having shifting engagement with the trolley wire supports, and a connection between the switch bars and the feed wire of the line, substantially as shown and described.

4. In the construction of trolley and like lines, the combination, with a series of supports, of supporting devices having rocking and pivotal connection with the supports, said supporting devices being provided with contact and insulated faces, a switch bar or circuit closer held normally in electrical contact with the supporting devices, located upon eachsupport, the said switch bars having independent connection with the feed wire of the line, and trolley wires connected with opposing supporting devices, forming a series of sections, the trolley wire of each section while under tension normally inaintainingits supporting devices in engagement with the switch bars, substantially as shown and described, whereby when a trolley wire breaks, its supporting devices will turn and present their insulated faces to the switches, as and for the purpose set forth.

GEORGE Q. SEAMAN.

Witnesses:

J. FRED AGKER, C. SEDGWIOK.

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