US2361536A - Collector - Google Patents

Description

Oct. 31, 1944. w, FRANK 2,361,536

COLLECTOR Filed July 21, 1943 INVENTOR.

Patentcdbctfil, 1944 "U ITED STATE William 11. Frank, neimie'mtn,

Bulldog Electric Products Company, Detroit Mich a corporation of West Virginia 5. PATENT. OFFICE @5323;

assignor i0 Application July 21, 194$,Serlal No. 495,590 v 2 Claims. (01. 191-45) 1 This application relates to improvements in collectors useful with electrical distribution-systems.

A prior Patent No. 2,170,296 of August 22, 1939, shows a collector having a T shaped-roller carriage upon which is mounted and supported a collector head. The present application relates I particularly to improvements in the head per se, and, except insofar as the carriage forms part of the combination shown herein, and considered as part hereof, the carriage per se forms no part of the presentinvention.

For an understanding of the details of con-- .struction of the collector here shown, reference The carriage of the collector hereshown is the one disclosed in Patent No. 2,170,296. It will not therefore be specifically described. Sufllce it to say that it comprises an elongated sheet metal plate 25 bent in the form of a double-walled T, to provide a vertical and a horizontal portion. The vertical portion has load hangers 2t. Journaled in the horizontal portionare side thrust rollers 21 and support rollers 30.

The head shown herein includes an elongated support is in the form of a tube of insulation, of

square cross section, which may befastenedto the carriage by suitable fastening means, such as the screws 50. The bottom wall of thehead or support 49 is provided with one or more openings ii through which insulated conductors '52 which pass through the carriage, may enter the support so that their terminals 53 may be fastened to suitable contact posts 54, which are in the form of rods of insulation slidably disposed in alined holes 55 of opposite walls of thesupport. Transverse passages 56 in these posts receive insulated (unstripped) terminals of the conductors.

The exposed portions of the posts have axial bores til threaded to receive .metal screws 6|, whose pointed ends 62 pierce the insulation of. the conductor terminals and bind these terminals firmly in place in the posts, and at the same time provide a conducting path from these terminals to the exposed and enlarged heads 63 on ends of these screws. Coil springs 64 around the exposed portions of the posts engage the enlarged heads of the screws to bias the posts outwardly against the rails of the electrical distribution system.

side the support can find their way to the contact The terminals It limit the'posts againstexcessive outward movement.

Each post is mounted in alined guideor hearing, hole." of opposite walls of the support and thus is prevented from cocking as the collector moves along the rails.

The simplicity of the arrangement herein disclosed is manifest, andthis forms one of the desirable characteristics of the head herein disclosed. I

Itwlll also be observed that the use'of-criticai war materials, such as rubber, and metal, has been reducedtoan absolute minimum.

The support is rigid, comprising a hollow tube the contact posts though resiliently mounted with respect to the support and the post holes, nevertheless do not expose the interior of thesupport during their movement, to any substantial extent, the post holes remaining sealed at all times. This is of importance in that disturbances,.due to loose terminals or load conductors, is minimized,

.for these terminals are always completely enclosed in the. support.

The support is shown as open ended. -If desired, however, end covers may be applied to the support; however, because of the distance between the ends of the support and the contact posts, it is not likely that disturbances from outposts or the conductor: terminals inside the support.

Now having described the head hereof, reference should be had to the claims which follow for the determination of the protection sought herein.

I claim: a 1. A contact post arrangement comprising a supporting wall having an opening, a contact post slidably disposed in said opening, with ends on opposite sides of the wall, the posthaving a transverse passage behind the wall receiving a terminal of a conductor behind the wall, the post in front of the wall having a threaded end bore transverse to said passage, a pointed and headed binding screw of conducting material threaded into the bore with itshead exposed in front of the wall and with its point engaging a conductor terminal in the passage to bind it in place in the post, and to provide a conducting path from the terminal to the exposed screw head, the latter forming an exposed contactor for the conductor terminal, the screw headbeing larger than the contact post, and a coil spring in front of the wall around thepost, and abutting the wall and the screw head, for biasing it and the post from the wall, the terminal limiting the post against excessive movement caused by the spring.

2. A contact post arrangement comprising a supporting wall having aniopening, a contact post slidabiy disposed in said opening, with ends on opposite. sides of the wall, the post having a transverse passage behind the wall receiving a terminal of a conductor behind the wall, the post in front of the wall having a threaded end bore transverse to said passage,- a pointed and headed binding screw of conducting material threaded into the bore with its head exposed in front or the wall and with its point ensuring a conducin: for the post. a

wall around the post, and abutting the wall and the screw head, for biasing it and the postirom the wall. the terminal limiting the post against excessive movement caused by the spring, and means behind the wall providing a guide or bear- WILUIAMH. FRANK.

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