US542228A - Trolley breaker - Google Patents

Description

N o Model.)

H'. P. BALL & 0. A.- LIEBQ TROLLEY BREAKER.

No. 542,-228. PatentedJuly 9,1895.

FTEJ.

111mm PRICE BALLIAND CHARLESADAM LLEB, F NEWXORK, SSIG ORS roTuE GENERAL ELECTRIC COMPANY, on son NEorAnY, NEW-YORK.

TROQLLIYEY-B EAKE'R.

snnoirrcarxon forming s of Letters Patent No. 542228, dated July e, 1895,. 1'

' Annlication filed August 8,1894. Serial No. 519.719. (Nomodeld TofdZZ WILD 17bit may concern:

Be it known that we, HENRY PRICE BALL Qand CHARLES ADAM I'jJIEB, citizens of the United States, residing at New York, county of New York, and State of New York, ha ve.

invented certain new and useful Improvements in 'lrolley-Breakers, of which the following is a specification.

Our invention relates to line-section insu lators for troliey-lines,cornmonly called trolley-break ers; and it has for its object to provide an insulator of the kind described, which shall be at the same time strong and light and capable ot'easy repair without being-re tl1e m, so that no current can leak across the insulator, while-the two wooden bars are so connected in plac'exthat they maybe readily removed and newones substituted in their place without taking the insulatorfrom its place in line, as already pointedout.

Y The accompanying drawings show an embodirnent of our invention, and therei n.

Figure 1 is a side elevation, and Fig. 2 an end. view, of our improvedtrolley-breaker.

' Fig. 3 isa detail showing' the construction of thereon.

the lower'arui; and Fig. 4 is a sectiomupon theliue X X of Fig. 3, showing the"manner,ot supplying the metallic envelope Fig. 5 is a. vertical cross-section through one of the end pieces of the trolley-breaker.

A is the lower bar of the insulator, made of wood and having metallic envelopes a, a. (Better illustrated in Figs. 3 and 4.) This metallic envelope is formed with V re-entering folds a adapted to secure it firmly '45 in place, and through the folds and the wood are passed rivets or screws d d. A slotted tongue at projects from the envelope, the

whole being stamped out of-a single piece of sheet metal and turned over to the form desired.

.B B show the end pieces or heads of the trolley-breaker formed of a composition, such as brass orbronze. The heads B Bare each provided with a socket a open at the bottom and inner end of heads B, in which is located a slotted tongue a, of the arm A, the tongue a beingadapted to'be moved into and out of position in the Socket a vertically through the bottom of head B. Screws b'passthrough these heads and engage 'in' the slotted tongue a of the bar A to secure'it in vertical position'. Passing through these heads is a ecu-- tral bar 0 of iron, carefully insulated" from theheads by a sleeve H of any appropriate insulating material; For this purpose, however, we prefer the insulating-material known in the art as Liebite, as it is readily molded in place under heat and pressure and then be comes adherent to the bar. Enlarged heads H H of this material are also formed to in o close the head ot' the bar 0. ()ue'ot these heads maybe formed by upsetting the bar, or: i

may consist of a large sleeve-nut having'an interior thread, the particular construction being immaterial. Q

, A nut 0' projects beyond the other end ofthe trolley-breaker and forms a means of regu' lating the compression of the bar G, securing the two heads B B together. In the heads are formed groovesb, which are intended to re- So ceive the trolley-wire which passes up through these grooves, and is then held in place by the plates 2. The holtsEE' being then tightened the late 8 is forced against a part of the-surfac of the head B, with which it registers, and-the trolley-wire is firmly clamped in place. A hole of proper size,-indicated at F, is also provided, in which a fe'edenwire may be inserted and secured in place by a set-screw G, provided with a lock-nut g,'as '0 best-shown in section at the left in Fig. 1.

The upper or compression member of the trolley-breaker (which is,,in.' reality, a truss in itsconstruction) is indicated at D, and-is also formed of wood, having ends' finished to register with the sockets in the heads 15.

(Shown in dotted lines at d'id'.) A span-wire. hook D is also shown having a centralopen iug'embracing the bar; This is of ordinary 1 construction, however, and forms 'no part of no our inventionin this particular case.

The use and operation of our improved 'trol- Icy-breaker will be readily understood from the preceding description. It is erected by attaching it to the span'wire by the hook D. The trolley-wires are then inserted through the channels b band brought around the bolts E E and between the plate e and the sur- 5 face of the metallic end piece B, after which the bolts are turned until the wire is firmly secured inplace. If desired, it may be sol- --dere'd into metallic connection, although this 'is not essential, as good contact, is made by thepressnre of the bolts. Feeder-wires arethen lnsertel "in the holes F and secured in place by the set-screws G, after which the span-wire .is adjusted to bring up the trolley breaker into alignment. The onlypnrtof the :5 device subject to wear is the barA, which, by reason of flashing as the trolley passes over it, in time becomes too weak or gets out of shape, so as to render the trolley liable to jump; but it maybe readily renewed without disturbing the other parts of the trolley breaker by removing the screws b to permit the tongues a to be drawn down out of the slots 0. in the metallic end pieces B, and a new one may be inserted and the screws b re- 15 "placed to hold the bar A in place. In use tion', (so that no are will follow the trolley from one section to the other of the wire,) and e ease of adj ustment and repair. Byour improved construction we get a weight less than two-thirds that of many trolley-breakers now in use, at the-same time increasing the dis-" tunes from one section to the other of the 1,5 trolley-wire to double that ol. the ordinary patterns, and also getting great strength by reason of the tensile strength of the bar 01 What we claim as new, and desire to secure by Letters Patent of the United States, is

1. A trolley breaker comprising metallic end-pieces, compression and extension mam bers having their ends located in the metallic end-pieces, and a middle' brace or bar being longitudinallyadj ustable and adapted to compress the parts in place. r

2. As a new article of manufacture, a trol-, ley breaker or line section insulator for electric conductors, consisting of metallic end pieces secured together by acentral bar 0 of metal, insulated from such pieces arid having an upper and lower bar of wood adapted to act as compression and extension members respectively, and means, substantially as described, for permitting the end piecesto move outwardly on the ends of the extension member and yet retain the latter in place.

3. A trolley breaker consisting 0i metallic end pieces and three longitudinal bars arranged in a vertical plane and spaced from one another, the top her being a compress on member and the lowest bar an extension member, said bars having their ends connected to and insulated from the metallic cud pieces,ancl the lowest bar being removable from the metallic end-pieces without disturb- 1 'ing th'e other parts of the trolley breaker.

, 4." A trolley breaker consisting of metallic end pieces, three longitudinal bars, one of the outer ones of which is a compression member, and the other an extension member, means for permitting the end pieces to move outwardly on the ends of the extension member and yet retain the latter in place, the said .three longitudinal bars being spaced from oneanother and having theirends connected to and insulated from the metallic end pieces, and means for adjusting the middle bar longitudinally.

5. As a new article of manufacture, a trolley breaker comprising an upper bar D of wood, a span' wire attaching member D there0n,a central bar 0 of metal, a lower bar A of wood having a metallic envelope (1 upon its ends, and metallic end pieces 13,13; the central bar being insulated from the metallic and pieces and provided with adjustments for its length, whereby the insulator may be taken down or assembled without removing it from its place.

6. in a ll'Olley breaker or line section 1m sulator, a lower bar as A, of an insulating material, provided with metallic envelopes a having slotted tongues a, the metallic envelopes being formed in a single piece.

7. Ina trolley section insulator, the combination with the metallic end pieces B having-a socket in their inner face, of the bar A of insulating material'having the metallic envelopes a at its ends, with the open-ended slotted projection a engaging and secured in the-sockets inthe pieces B.

8. A trolley section insulator composed of the following parts; end metallic pieces to re-.

ceive the trolley and feed wires, having sockets on their lower inner face, a bare)? insulatihg material sheathed with metal at its ends and detachably secured in the sockets of the end pieces, an intermediate metallic rod detachably secured'to the end pieces and insulated therefrom, and a removable top-barof insulating material carrying a metallic span wire bracket, the end pieces of the insulator being provided with plates and bolts for clamping the feed wires thereto.

In witness whereof we have hereunto set our hands the 27th day of July and 2ddayof August, 1894, respectively.

HENRY PRfoE BALL. CHARLES ADAM LIED. Witnesses:

J. M. ZAPATIA, J 1:, W. H. Mom.

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