US687091A - Rail-bond. - Google Patents

Description

N0. 687,09I. yPatented Nov. I9, |90I.,

C. WALTHER.

RAIL BOND.

A(Appncfmm ined June 27, 1900.)

ltty.

Carl althew^- web thereof.

UNITED STATES I )ATEmv OFFICE.

CARL IVALTHER, OF BERLIN, GERMANY, ASSIGNOR TO GENERAL ELECTRIC v COMPANY, A CORPORATION OF NEW YORK.-

SPECIFICATION forming part of Letters Patent No. 687,091, dated Nevemberie, 1901..

Application filed @neef/,1900.

To tu whom it may concern: v

Be it known that I, CARLWAL'rHER, ak `subject of the Emperor of Germany,'residing at Berlin, Germany,have invented certain new and` useful Improvements inv Rail- Bonds, (Case No. 1,677',) of which the' following is a specification.`

This invention relates to connectors or bonds for electric conductors designed with' especial reference to railroad-rails, but not limited in application to such use.

The object of the invention is to providea durable bonding device which will aord ample carrying'capacity between adjacent rails for the electric current. n, v Figure l is a vertical section of a railV and a bonding device inserted in a hole in the Fig. -2 is a side elevation of a part adapted to be inserted in the rail-web, to which part the ends of the bonding-con ductor are adapted" to be connected. Fig. 3 is an end elevation of the part shown in Fig'. 2. Fig. 4 is a plug adapted to be inserted in the longitudinal hole H of the part shown in Figs. 2 and 3, and Figs. 5 and 6 are perspecf tive views showing adjacent'rails'with the bonding device attached.. v

The part which is adapted to be inserted in the rail-Web is indicatedby the lettersPS and may be called a plug-socket, as it has a central hole or perforation H, 'adapted to re-` ceive the plug U. (Shown in Fig. 4.) Each plug-socket is composed of some pliant conducting metal, such "as copper or Zinc, so that it may be compressed against the hole in the rail-web. If zinc is used, there will be practically no electrolysis, since its electrochemical properties are nearly the same as those of steel. In some cases it may be preferred to use copper, the .same metal as that of which the bonding-conductor is composed. Each plug-socket is provided .with a iiange F to limit its passage through the hole in the railweb. There are also formedjin the external lateral surface of each socket several grooves G of suitable size for the reception of strandsk S of a copper or other suitable bonding-conductor B. As shown in Fig. 3, the portion of the socket which comprises the wall of the hole H is divided into sections C inforder thatthe socket can be forced against the rail.

serein No. 21,719. (No motel.)

` This' may be in addition tothe compressibil? ity of the pliant metal orA may be .adoptedinA case a rigid metal is used. After the sockets PS are inserted in the holes in therail-.web, theends of the strands S beinginserted inl the grooves G, theplug U, of steel ork other'suit` able metal, is driven .into the hole H, whereat the sections lC ofthe ywall of 'the hole H arey f e forced outward against the wall of thc hole linl the rail-Web, and vthe yielding copper or zinc or other suritablemetal of which the,- i

socket is composed is compressed against the strands S and against the rail itself,.and the strands are also pressed against the rail. The grooves G being originally of justksufiicient Asus'l size to permit. the insertion of the strands S l are contracted, so that thek strands S are tightly inclosed, and it is practically impossible for vmoisture to enter in.y .This reducesthesliability of electrolytic action, even in case a copper plug-socket vis used; The en? tire contacts of the strands and the socket with therail and of ',thelstrands Vwith `the* I socket thus provide joint'swith very little resistance. f

In Fig. 5 the bonds arefshown in place, the

fishplate being removed. As shown in.y this 'gure, the free ends ofthe strands H are bent over the flanged end of the socket in order to further guard against their withdrawal from thelgrooves by expansion.

What I claim as new, and desire to secure 1. A rail-bond, Which comprises conducting parts, each of which is adaptedtobe inserted in a hole in the rail, and to be forced against 7 the walls of the hole; a bonding-conductor,

each endof which is placed between a rail` Y e andone of the conducting parts; and relatively rigid parts, each `of which is adapted to force one of'the conducting-pieces into inthe walls of the hole and each of which is provided with a hole, the wall of which is di videdinto sections; a bonding-conductor, each end of which is placed between a rail and one of the conducting parts; and relatively rigid parts, each of which is adapted to force one of the conducting-pieces into intimate contact with the rail and the end of the bondingconductor.

3. A rail-bond, which comprises plu g-sockets of conducting metal, each of which is formed with a longitudinal hole and is adapted to be inserted in a hole in the rail, and toi be forced against the Walls of .the hole; a bondingconductor, each end of which is placed between a rail and a plug-socket; and relatively rigid plugs, each of which is larger than the hole in a plug-socket, and each of which is driven into the hole in a socket, to force the socket into intimate contact with the rail and with the end of the bonding-conductor.

,4. A rai1-bond,'which comprises plug-sockets of conducting metal, each of which is formed with longitudinal grooves in its external surface and with a longitudinal hole, and is adapted to be inserted in ahole in a rail, and tohe forced against the Walls of the hole; a stranded bonding-conductor, the ends of the strands of which are placed in the groovesl in said plug-sockets; and relatively rigid plugs, which are larger than the holes in the plugsockets, and each of which is driven into the hole in a socket to force the latter into inlimate contact with the wall'of the hole in a rail, and with the ends of the bonding-conductor strands.

5. A rail-bond, which comprises plug-sockets of conducting metal, each of which is formed with a longitudinal hole, the wall of vwhich is divided into sections, each plugsocket being formed also with longitudinal grooves in its external surface and being adapted to be inserted in a hole in a rail, and to be forced against the walls of such hole, a Stranded bonding-conductor, the endsof the strands ofwhich are placed in the grooves of said plug-sockets; and relatively rigid plugs which are larger than the holes in the plugsockets, and each of which plugs is driveninside the hole in a socket to force the sections of the wall of the socket into intimate contact with the wall of the hole in the rail and with the strands of the bonding-conductor.

6. A railbond,which comprises conducting parts, each of which is adapted to be inserted in a hole in a rail; a bonding-conductor, each end ofwhich is placed between a rail and one of the conducting parts; and relatively rigid parts, each of which is adapted to force one of the conducting-pieces into intimate contact with its rail and the end of the bonding-conductor.

7. Aral-bond, which comprises a stranded bonding-conductor, the ends of which are inserted in holes inthe webs of the rails, and each strand of which ends is pressed into intimate contact with the rail.

8. A rail-bond, which comprises conducting-pieces adapted to be inserted in holes in the rail-webs; a stranded bon ding-conductor, the ends of which are inserted in the holes in the rail-webs between the rail and one of said conducting-pieces; and means whereby said pieces are pressed against said strands and against the rails.`

Arail-hond, which comprises a bondingconductor, plug-sockets of conducting metal, each of which is formed with a longitudinal hole, the wall of which is divided into sections, and with which sockets the ends of 'the bonding-conductor have intimate" electrical Contact; and plugs which are larger than the holes in each pliig-'sohet,eacl1ot which plugs is driven into the hole in a socket to spread the sections of' thel wall of the hole inthe socket, and force them into intimate Contact with the rail. 4"

10- Arai1-b0nd,vhih comprisesabondnsconductor, plug-,sockets of pliant conducting metal, each" of which is formed with a longitudinal hole, the wall of which is'divided into sections, and with which plug-sockets the ends of the bonding-'conductor have intimate electrical contact;` and plugs which are `larger than'the holes in each ping-socket, each of which plugsis driven into the holeof a socket inserted iliit'rail-web, to spread the sections of the wan of the hole in the socket, and pompress them against'the 'wall of the hole in the rail-web.

`In witness .whereof I have hereunto set my hand this 11th' day of lUnire, 1900."

CARL WALTHER.

Witnesses HENRY HASPER, i WOLDEMAR HAUPT.

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