US1006884A - Electric-lamp socket. - Google Patents

Description

F. E. SEELBY. ELECTRIC LAMP SOCKET.

APPLICATION FILED APRA, 1910.

@amm not, 2 4, 1911.

entran s'rnras rnrnnfr onirica.

FRANK E. SEELEY, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELEC-- TRIO COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRIC-LAMP SOCKET.

i ponsen.1

Specification of Letters Patent.

Patented Oct. 24, 1911.

Application led April 4, 1910. Serial No. 553,266.

TC all whom it may concern:

Be it known that I, FRANK E. Snnnnr, a citizen of the United States of America, residing in the city of Bridgeport, in the county of Fairfield, in the State of Connecticut, have invented certain new and useful Improvements in Electric-Lamp Sockets, of which the following is a specification.

The main object of my invention is to construct an efficientA electric lamp socket with a switch mechanism which'will give a quadruple break of the circuit on turning the key to sluit off the current, that is, there will be a double breal 'si the circuit in each of the two poles or branches.

A further feature of my invention consists in so constructing the socket that at the same time the key spindle will be dead that is, not included in the electric circuit.

In the accompanying drawings Figure 1 is a vertical section through a socket einbodying my invention, the line of section being on the axis of the spindle, and the switch in this viewvbeing shown in the closed position; Fig. 2 is a similar view, showing the switch open; Fig. 3 is a plan view of the lower porcelain block, the upper block having been removed and the parts being in the positions shown in Fig. 2; Fig. 4 i's a section on the line 4-4, Fig. 3; Fig. 5 is a section on the line 5h53, Fig. 3; Fig. 6 is a perspective view.

I prefer -to construct the insulating body of the socket of two blocks and 1l, united together by brackets 12 and 13, which are -inelosed in recesses in the juxtaposed faces of the blocks and carry binding screws 14, 15 for the conductor wires, while the lamp terminals (central contact 16, screw shell 17) are moundoisV `the underside of the block, all substantially as set forth in the lerkins socket patent 626,927. As in said patent, I may use as a part of my switch mechanism, a key spindle 18 with handle 19, and turning in bearings in a metal fra-me 20 Figs. 1, 2 and 3), and Within the frame is a cam block 21, having a lost motion connection with the key spindle; `this cam block acts upon a plate 22, guided on the frame .and normally pressed upward against the cam block by a spiral spring 23 (Fins. 1 and 2) around the frame 2O in a centra well in the lower block 11. In this socket, however, the cam performs only the mechanical function of actuating the plate 22 against the pressure of the spring 23, and forms no part of the electrical circuit, so that the key spindle 18 is dead.

To the plate 22 is secured in any suitable way. a switch plate 24, consisting in the present instance of a plate of hard ber or other insulating material having secured to its upper edge two conducting strips 25 and 26, (Figs. 3, 5 and 6), extendingidownwardly a short distance on opposite faces of the insulating strip. In the present instance I have shown this switch plate 24 as secured to a projecting arm 27 on the plate 22, Fig. 6, by passing said arm into 'an opening formed in the insulating body of the plate 24, so that the latter will rise and fall with the plate 22 as actuated by the spring 23 and cam 21.

The juxtaposed faces of the two blocks are recessed to form aA chamber 28, in which the switch blade may reciprocate. The recesses in which the wire terminal brackets 12 and 13 are housed open into the opposite ends of this chamber 28, F ig. 3. In electrical connection with the terminal bracket 12 is a spring contact 30,whose free. end reaches over into the chamber 28, in position to make contact with the plate 26 on the side of the switch plate 24, next the cam 21, when the latter has been turned to depress the switch plate as shown in. Fig. 1. Similarly vthere is connected with the terminal bracket 13 a spring contact 31 to make contact with the conducting plate 25 on the switch plate. ln the same chamber 28, but on the opposite side of the switch plate 24 from the contacts 30 and 31 aretwo contacts 32 and 33, corresponding with, but spaced from the contacts 30 and 31. The contact 32 is in electrical connection with the central contact 16, while the contact is in electrical connection with the screw shell 17, Figs. 5 and 6'. The upper free ends of the plates 32 and 33 are inpositions to contact with the plates 26 and 25 respectively, when the switch plate is depressed, to close the circuit. When the key spindle 18 is turned toward the position shown in Fig. 2 from the closed circuitposition, Fig. 1, the spring 23 will cause the I switch blade 2e to be raised with a `quick movement andiwill cause the circuit to be broken at four points, namely, at the plate 2G on one side with the contact 30 and on the other side with the contact 32, and at the same time at plate 25 on one side with plate l* and on tlm other side with plaie 33, Figs. 4. and f5. "Jillian he Circuit is illus broken he insulating body of lah@ switch pluie #mulls l'lotwceu lh@ Con'lucs 30 und 3l. on one fido. mul the conflicts 2.2 :incl 33 on the ulhci.

l. claim as my inaf'iltimill. im elriic lumplsoclie, Comprising :in lnsiiluiisg hoaly with n Swih chumbei' und with wim lmn'xinals :md lamp lmfmiuals,two spaced co'iilacls in. @zich brunch 0f the cirmit, in lh switch chandler, n, movable :witch plaie carrying Contacts 011 its Oppoiic laces und a key spindle and a spi-ing to Giunte said switch plate t0 make nml break he circuit al both said xpm-uil Contncls 011 aL-h brunch. v

An oliciiic' lump soc-laut, comprising :m insuln'iingf bmly with u switch Cl'mnlhei' 21ml. with wir@ 'lm'miuulg uml lamp ;c1111.inuls,l;wo sawmill contacts; in auch luuiichol thetircuit in lille fawllch uhzunlmz, au insulating swlllch alla Czlrifying Contacts mi its oppo faces,

:i plato. supporting Jche insulating switch plaie, and :'L hoy spindle, cam and a spring lo nehmt@ the suppru'tng plate..

All electric. lump socket, comprising an insulating body with :L switch chamber and with lump terminals, wir@ terminal brackci's in ,lfoccgscs :1t the opposite slides of the insulating body, Contacts in connection with lha i'cspcclve bi'zlckcts, corresponding but ,Sp-:10ml contacts in connection with the lamp Terminale, :i switch plate having contacts on its oppwltc faces to make and break the circuit in hull) l) anchos und :i key spindle, Cam

-:unl spring 'to actu-.itc the switch plate.

,lil csl'iinnny whereof l have signed my name lo this spvciiication, 1n the presence of two Subscribing witnesses.

l? -ANK E. SEELE.

lVi messes A. H. JONES,

L. 3. WHEELER.

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