US1177239A - Attachment for pull electric-lamp sockets. - Google Patents

Description

T. W. FITZGERALD. ATTACHMENT FOR FULL ELECTRIC LAMP'SOCKETS. APPLICATION FILED JUNE 22.1914.

1,177.23. Patented Mar. 28, 1916 enemas-w. rrrzeszaann, oraos'ron, massacnusn'r'rs,

To all witom it may concern:

Be it known that I, THOMAS W. Frrzon ALD, of Boston, in the county of Sufl'olk and iState of Massachusetts, a citizen of. the

United States, have invented a new and useful Improvement in Attachments for Pull Electric-Lamp Sockets, of whlch the following is-a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

My invention relates to an attachment for an electric lamp socket which has a flexible pull connection for o crating .it and the attachment is one of t at type by, which the flexible connection may be extended outwardly from the socket ovei' an interfering glob or other fixture which might interfere wit the manipulation of the co'nnectlon and operation of the socket.

The essential object of the invention 1s to provide as simple an attachment aspossible which will be attractive in appearance and eflicient in its mode of operation.

In connection with the operation of the attachment it is my purpose to provide wherebythe flexible connection may at all times be operated with a straight even pull upon the socket and which Wlll also only permit of the operation of the flexible con- .nection within defined limits or those for I securing proper operation of the socket relieving it from strain.

My invention can best be seen and understood by reference to the drawings in i which- Figure 1 shows in side elevation a socket provided with an attachment embodying my invention. Fig. 2 shows in side elevation a portion of the attachment and illustrates the changed position thereof as compared with Fig. 1, such change of position appearingdurmg the operation of the at for laterally extending the chain away from the socket over a globe or other fixture (not shown). Theattachable arm 3 is preferably Specificationof Letters Patent.

Application filed June 22, 1914. Serial No. 846,565.

' segment presents an" outer armcnnnn'r roe. rum. anaemic-LAMP socxms.

Patented Mar. 28, 1916.

made of bent sheet metal presenting inner ends which pass around the body of the socket and are clamped thereto by means of a screw 4. The outer portion 5 of the arm is preferably angularly bent upwardly and outwardly and presents a cleft or bifurcated end 6 (seeFigfl). Mounted upon the outer end of the arm is a segment 7. This segment is journaled to turn between the bifurcated ends of the arm by the pin 8. The grooved edge 9 over which the chain 2 passes. The chain is secured to the segment. This is done by, incising or otherwise indenting the grooved edge thereof to form a clip 10 which grips the chain and binds it to the egment by embracingone of the balls of the chain. The chain is secured to the segment in such a manner as not to interfere with the proper turning of the segment as the chain is pulled. In other words, the chain should be secured tothe segment when the segment is occupying a forward turned position substantially as shown in Fig. 1, that portion of the chain lying between the segment and the socket being drawn straight, such being the initial position of the chain and seg- -ment preparatory to a pull of the chain. As

the chain is pulled for operating the socket the segment will 'then turn back only a short distance or to a position substantially as shown in- .Fig. 2 Where it will be seen that the attachment of the chain to the segment has not interfered with the proper turning of the segment and operation of the socket.

It will also be seen that during the pull of the chain for operating the socket that portion of the chain lying between the segment and the socket will at all times draw along the same line, thereby effecting a straight pull upon the socket without any twisting or torsional effect. The segment presents also front and back edges 11 and 12, respectively. Inasmuch as the segment is mounted to turn between the bifurcated ends of the arm, the edges 11 and 12 will accordingly have contact with the arm during the turning of the segment and thereby define the extent of its forward and reverse movement. The segment is so made that the edges 11 and 12 thereof by their contact with the arm will define just the proper That 'is,

when t c ain is in its initial position fire to a pull upon the socket, the edge segment will contact with the arm substantially as shown in Fig. 1. As the chain is pulled for operating the socket it can only be pulled an amount sufficient to effect a proper operation of the socket when the edge 12 of the segment will engage the arm and prevent further pull upon the chain and strain upon the socket. 'lhe socket according to its operation will then return the released chain to its initial position when the paratory 11 of the with the arm and thereby define the proper ope 'ative position of the parts preparatory to the next pull, and eliminating the danger of the chain becoming disconnected from the segment or becoming otherwise disarranged even though it be suddenly released after the pull. 1

.The segment is preferably made of separate sheet metal parts 13 and 14, respectively, cut and stamped into proper shape and then fastened together by pins 15.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States z- 1. An attachment for electric lamp sockets having a flexible pull connection, said attachment comprising an arm attachable to the socket to extend outwardly therefrom, a segment mounted upon said arm to turn back and forth thereon within the plane of said arm, said segment presenting forward and rear edges adapted to engage said arm 35 for defining the forward and backward edge 11 of the segment will again contact movement of said segment, said segment presenting also an. outer edge over which said flexible connection passes to connect with the socket. v

2. An attachment for electric lamp sockets having a flexible pull connection, said attachment comprising an arm attachable to the socket to extend outwardly therefrom, a segment mounted upon said arm to turn back and forth thereon and have engagement therewith for defining the turned position of said segment, said segment presenting a rim over which said flexibleconnection passes to connect with said socket, said segment bein provided also with means for securing sai flexible connection to its rim.

3. An attachment for electric lamp sockets having a flexible pull connection, said attachment comprising an arm attachable to the socket to extend outwardly therefrom, said arm presenting a split outer end, a segment mounted between the split ends of said arm to turn within the plane thereofand have engagement with said arm for defining the turned position of said segment, said segment presenting an outer edge over which said flexible connection passes to connect with said socket, said segment being provided also with means for securing said flexible connection to its outer edge.

THOMAS W. FITZGERALD.

Witnesses:

JouN E. R. HAYEs, M. F. FLAIIERTY.

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