US1155307A - Switch-operating device. - Google Patents

Description

n. 0; Gannon.

SWITCH OPERATING DEVICE. APPLICATION FILED FEB. M31914 PatentedSept. 28, 1915.

i To aZZ whom it concern:

' UNITED STATES PATENT ()FFIGE.

avin :o. GORDON, or CHICAGO,

Be it knownthat I, Davin D. G'oRDoN, a citizen of the United States, residing at Chi- 'cago, in -thecounty of Cook and State of Illinois, have invented a certainnew and useful Improvement in Switch-Operating Devices, of whichithe following is a full,

- clear, concise, and exact description, refer- .ence being had to the accompanying drawings, forming a part of this specification.

My invention relates to switching devices and is'o f more particular utility in connection with sockets for holding translating de vices such as lamps.

invention is. designed to bean im-' provement over. the form now utilized in operating switching devices of the character called. pull sockets which are operated through the agency of a chain. My invention is designed, to overcome the necessity of having the chains enter within the confines of the socket, thus to obviate the danger of having these'chains become entangled or disabled in theoperations of the socket. v

, In accordance with my invention, I attach I 3. preferably rigid tension member to the.

-operating portion ofth'e switch movement and have this tension member extend, when in itsnormal retracted position, to the outer -wall of the socket, where a chain may be attached .to it for the purpose of operating it. -This tension. member is curved and by reason of itscurvature accommodates itself in such a manner that it can be operated by the chain no matter what may be the direction of pull exerted by the chain. The pull may be either up or down or at an angle thereto. Whenever a pull is exertedby the chain in either direction,'this' tension member being pivotally mounted at its extremyity brings itselfinto position so that its curvature will accommodate it to be drawn by the chain to operate the switclrelement.

tion may take more in detail by referring .to the accompanying drawing llustrating I will explain one form which my inventhe same in which I Figure 1 represents a sectional viewof a Switch movement havlng my improved operati-ng device;.Fi-g.2 shows the same moveswrron-ornna'rme DEVlICE.

Specification of Letters Patent.

rumors, ASSIGNOR Tofiros'r ELECTRIUMANUFAG- meme COMPANY, or TOLEDO, OHIO. 1

. P d sen k z 1915 Application filed February 12,1914, Serial No. 818,238.

reverse its position, and Fig. 3 is a'sectional view on line 60-41 0f-Fig.'1- D My improved structure: contemplates, for instance, a socket wall 1, the-screw threaded portion of which and the central contact of which are only partially illustrated asthey "do-not form parts of the invention; .l'l- ,do

however show circuit-terminals 2, wh-ich are mounted within thesock'etand a movable contact element 3 adapted periodicallyl to engage the circuit terminals 2 andto efl 'ect circuit closure or opening as the case may be. A bus bar 3 connects one of the circuit terminals 2 with the screw threaded contact element 2* of the socket. The mechanism to control this switch arm 3v is illustrated in my application Serial No. 818,237, filed Feb. 12, 1914i, in which this switch member 3 is moved by snap 'action to effect both a quick make and a quick break' of the circuit controlled thereby. This switch element 3 is pivoted upon a shaft 4 and is controlled'by a rotatable element 5 having two resting positions governed by the spring 6, which spring always retains this "element 5 in line I parallel to itself. This spring is'prefe'rably coiled about the stud 7, theopposite arm of the spring engaging. an arm 8 also pivotally mounted on the stud 7. The arm 8 carries a further arm -9 pivotally mounted thereon andwhich is controlled by a spring 10 which tends to force it into a contra-clockwise di rection of rotation. The'arm 9 has a pair of fingers 1 1 and 12 which engage thero tatable element 5 and move it fromone resting position beyond its position of repose sov that the spring 6. completes theremainder-of the movement of this element to its alternative resting position by snap action. This rotatable element 5 is'rotatably mounteclby means ofthe studs l3'and carries aprojectionor cam 1i adaptedto e'nga'ge'the \v'alls of the slot 15' providedin the switch. armfi.

. It will be readily apparentfthat'if-the movable element 5 is in the position shown in Fig. 1, that the arm '8 is away from the contact 2 and that if the rotatable element ,5'

fit)

tension member automatically opposite side and will be holding the switch arm 3 aga nst the contact .2 having forced it ,over by snap action in response to the actua-.

tions or the spring t). The breaking of the circuit likewise is accomplishtal by snap aetion. This detailed description of the switching devices'is given merely to lead to a. proper understanding ol'v the entire structure. itbeing umlerstoml. of course. that my sume thatxa tension is being exerted in the direction of the arrow by the chain It). then the arm lb may rest. upon the upper wall- 20, amt will slide over it by reason of its curvature. thereby drawing the arm 8 m a. eontra-clm-kwise direction to etleet movement o t' the switching elements. Now it. for

instance. the chain 16 is pulled in the opposite direction as shown in dotted lines on Fig. 1. then the tirst initial pull on the chain will naturally cause the tension element 18 to reverse its position so that its curvature is opposite. and a further pull of the chain in this opposite direction will likewise cause the proper contra-clockwise movement o t the arm 8. Also it the chain were pulled in a. direction at right angles to that shown in the tigures.-the tension member [8 would accommodate itsel t' and cause proper actuations o t the arm 6. In this way I. have provided a universally sell-adjusting to aceonunodate itself to the direction of pull of, a chain or other suitable tlexible tension member to properly control the movements-.o't a pivoted arm shch as the arm 8. The outer. 'h'ell lt ot' the socket doesnt guide the ari From what has' V thought the natureHol' iny entirely clear and re;u.j l skilled in the art. h

llaving however thlusde pparent to those scribed one form which my invention un-iytake.what lclaim as new and desire to secureby Letters latent'is:

l.. device 'ol' the clintfuetec described having a movable element l'or'controlling, a switch. a rigid bent tension member pivotally attachedat one extremity to and adapted to move said element. a guide for the opposite extremity of said member past which it is movable forming a support for arm 8 I provide it Now it'- the said opposite extremity o't said member, and means tor exerting a pull on the opposite extremity of said member.

'3. device of the character described having a movable element for controlling a switch. a rigid bent tension member pivntally attachedat. one extremity to and adapted to move said element. a guide l'orming a support for the opposite extremity of said member with which said member has sliding engagement to detine the movement of said opposite extremity. and means tor exerting a pull on said opposite extremity of said tension member. said member by reason ol its bent condition. pivotal mounting. and engagement with the said guide alining itself in the plane ol the direction of the exerted pull.

3. device ot" the character described havinga movable element l'or controlling a switch. a rigid curved tension member pivotally attached atone extremity to and adapted to move said element. a guide forming a support for the opposite extremity ot' said member with which said member has l. lit a device ot the tlinl'uetel described the combination with a movable element for controlling a switch. a rigid curved tension member pivotally associated at one extremity with said movable element. a guide t'orming a support for the opposite extremity of said tension member. and means for exerting a pull at the opposite extremity of said ltlt) tension member, said tension member by.

reason of: its curvature and pivotal mounting alining itselt in the plane of the direction ot the exerted pull.

device of the character describe-d having a pivoted arm for controlling a switch. a rigid curved tension member swingingly attached at one extremity to and adapted to move said arm, a guide forming a support For the opposite extremity of said member with which said member-has sliding engagement. and means For exerting a pull on saidopposite extremity of said tension member. said member by reason of its enrvature and swinging attachment alining itself in the plane o t the direction o t" the exerted pull..

t). In a device of the character described the combination with a pivoted arm for controlling a switch, a rigid curved tension member 'swingingly monntedat one extremity of said pivoted arm. a guide forming a support for the opposite extremity llt) tension member, and means for exerting a my name this 22nd day of Januu A. II. pull at the ppposite extremity of said ten-' 1914.

s'ion member, said tension member by'reason of its curvature and swinging mounting 5 alin'ing'itself in the plane of the'direction of Witnesses:

the exerted pull. HAZEL ANN JONES.

In witness'whereof, I hereunto subscribe A. L. JONES.

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