US1777067A - Electric switch - Google Patents

Description

Sept. 30,1930. A 1,777,067

ELECTRIC SWITCH Filed Dec. 17, 1 2

INVENTOR ATTORN EYS Patented Sept, 30, 19 3 I i UNITED STATES OF CHICAGO, ILLINOIS, A connonnrronfor NEW' JERSEY ELECTRIC swrro'n f i a Application filed December 17 1ieeflseriailit .i55;a7c. I,

Myinvention relates to improvements in electric switches-particularly for use in connection with locomotive electricsystems and has for one object to provide a new and improved form of electric switch wherein the switch member may be easily moved by the operator from. the on to the off position and vice versa and wherein the switch mechanism will positively remain in the position in which it was placed by the operator. Another object is to provide a switch arrangement which will be fool proof and durable so as to stand up under the very difficult problems of railroad service. Other objects 5 will appear from time to time throughout the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawhaving flanges A about which the housing may be mounted in place] A cover A outwardly flanged at A inwardly flanged at A and provided'with a dust tight packing strip A screws A may be used to fasten the cover in place to close the box. On either side of the box are hollow lugs A in this case associated with the lugs A onto which conduits may be screwed to contain the conductor A On another side of the box is a hollow boss A serving as a guide for the switch handle.

. B is an insulating block contained within the housing. Upon this insulating block} are mounted binding posts B to which lead the conductors A Associated with these binding posts are inwardly extending spring fingers B which never come in contact one with the other. B is a sliding'insulating block, adapted to travel on the block B.

This block carries a conducting jacket B so Figure 1 is a plan View in part section with arrangedithat'when'thepartsare in the position shown in fulllines in, Figure '1, the con ducting "jacket is out j j of, contact, whenfin the position; shown n dotted lines the con tfacting jacket engagesb'oth fingers and closes ajcircuitbetweeil them. ,It will be noted that thisblock ista ered as ensue insurej'easy n e em jwi lifth ispri g fi e 1 This sliding'b'l'ock B is guided the fixed insulating bloclc .B .-and is held therein'by meansof a spring plate B which spring plate terminatesin a lock finger B adapted to engage an enlargement B on the block B C is the switch handle comprising a cylindrical portion adapted to travel in and be guided by the sleeve A ,a hand button C and a squared shank (Pfrom which shankprojects a switch controlling rod G which rod is slidable in the block B The block B is recessed around this rod and a coil spring C is interposed between the bottom of one of the recesses and the member C and a spring C between thebottom of the other recess and a head C so that the connection between the hand piece and the sliding block is a spring connection and not a positive con nection, the result being that there is certain freedom of movement with respect to the sliding block and a push or pull on the hand piece while it is suflicient to shift the block into or out of position.

I claim:

JOHN A. AMOS, or cHIcAG ILLInors, ASSIGNOR T0 THErYtn A'rioNAncoMrAnY;

1. A switch comprising an insulating supporting block, a rectangular insulating block adapted to slide on the supporting block, having its longer axis parallel with its direction of sliding, recesses in line with the major axis of the block terminating short of the center of the block and a relatively small aperture joining such recesses, a pin extending through the recesses and apertures, springs one in each recess, surrounding the pin, each abutting at one end in the bottom of the recess, and at the other end, on the pin, a handle whereby the pin may be longitudinally moved, the ends of the block removed from the handle being forwardly tapered, a conducting jacket .encircling the block and terminating short of the ends there of, the jacket being upwardly bulged on one side of the block only, two opposed leaf conducting springs extending into the path of the block, adapted to be wedged apart thereby and adapted when the block is in one position to engage the conducting jacket and when the block is in the opposed position, to be out of contact therewith, a holding spring adapted to engage the bulge on the jacket to hold the block in a retracted position and an insulating support for said spring. 7

2. A switch comprising an insulating supporting block, a switch block slidable thereon, a thin conducting jacket encircling the switch block and upwardly bulged on one side thereof, means for moving the block longitudinally, an insulated holding spring adapted to engage the bulge on the jacket, two opposed conductor springs adapted when the block is in one position to both engage the jacket on opposed sides of the block, and adapted When'the block is in the retracted position to be out of contact with the jacket.

Signed at Chicago, county of Cook and State of Illinois, this 10th day of December,

JOHN A. AMOS.

Images