US1168190A - Electric-lamp receptacle. - Google Patents

Description

G.-A. GAUTHIE R. ELECTRIC LAMP RECEPTACLE.

- APPLICATION FILED DEC- 30, I9| 3-' 1,168,190. Patented Jan. 11, 1916.

3 woe W601 GEORGE A. GAUTHIER, 0F HARTFORD, C

ELECTRIC COMPANY, OF HARTFORD, NECTICUT.

Specification of Letters Patent.

ONNECTICUT, ASSIG-NOB TO'THE ARROW CONNECTICUT, A COREOBATION OF CON- ELECTBIC-L-AMP BECEPTAOLE.

Patented J an. 11, 1916.

Application filed December 30, 1913. Serial No. 809,568.

To all whom it may concern:

Be it known that I, Gnonen A. GAUTHIER, a citizen of the United Statesof America, and residing at Hartford, in the county of Hartford and State of Connecticut, have invented a certain new and useful Improvement in Electric-Lamp Receptacles, of which the following is a specification.

My invention relates to electric lamp 'recepta'cles and particularly to lamp receptacles for sign plates or outlet boxes, the

object of my invention being to provide improved means shell lamp terminal on the receptacle body.

' Inthe accompanying drawings, Figurel is an inverted plan of a sign receptacle of one type in which my invention is embodied; Fig. 2 is a vertical section on the line 2'2, Fig. 1; Fig. 3 is aplan view of the receptacle; and Fig. l is a perspective showing the position of the metal parts,

with the porcelain body omitted.

In sign receptacles, outlet box receptacles and the like which are exposed to weather ing conditions and the action of fumes and gas'es'constantly discharged from furnace chimneys, discoloration, oxidation, etc., of the usual screw-shell lamp terminal rapidly takes place and it is frequently desirable to replace the screw shell. In order to do this conveniently the shell must be fastened by screws accessible from the front of the receptacle and this has already been proposed. As heretofore constructed, these screws pass through the base of the receptacle and take intonuts or the like which are insecurely held merely by wax or the like on the back of the porcelain. As a result, when the new screw shell has been arranged in position and it is attempted to insert the holding screws, it is a common experience to find that the loosely held nut is not in register with the hole through the base and conse quently the screw will not enter. Slight pressure when the screw is bearing against the nut, and not threading into it, frequently forces out the wax and with it the nut, which is thus readily lost. For these and other reasons, it is a common experience to find a new shell secured only by a single screw entering the wire terminal plate on the back of the receptaclea condition whollv unworkmanlike and insecure, but resulting from the defects above noted.

In the present construction, I have elimithreaded holes of the position of the yoke has been positively for mounting the usual screw body 18 is held by the security -nated the danger of such practice, by providing a yoke oreplate into .which the securing screws for the screw hold said yoke in position by means which are undisturbed on the removal of the screw shell. Consequently when the new shell is placed,in position and the securing screws are passed through the base, they enter the the yoke without fail since maintained in registry with the holes in the receptacle base.

' The present construction may be applied tovarious types of receptacles. The receptacle here shown comprises a cup shaped 10 with lugs 11 adjacent its lamp re ceiving end by means of which it maybe mounted on a sign plate. The outer face of the diaphragm 12 which forms the bottom of the receptacle, is provided with parallel grooves 13, 14 for the reception of line wires. Recesses 15, 16 out by the line wire grooves, form seats for the strap 17- and the yoke 18 respectively. Outwardly struck tongues 19 and 20 form terminals for the line wires. Connection from strap 1 7 "to the center contact21'of the receptacle 1s secured through thescrew 22 whichholds both strap and center contact in place.

The yoke 18 is tapped at'the ends of its two legs to receive the screws 23, 24 which pass down through the washers 25 and base flanges 26 of the screw shell terminal 27 The screw'shell is thus not only mechanically held in position on the receptacle but. also electrically connected to one of the-line wires. The yoke is also tapped to receive 'the'security screw 28 the head of which is seated in the well 29 below the base flange of the screw shell. A lug .30 may be formed on one leg of the yoke to afford sufficient metal for the tap without/unduly Weakening the yoke. It is obvious'that this conmoved from the front of the receptacle by loosening the screws 23, 24 white the yoke screw 28 in exact position to receive the screws 23, 24 when readjusted with the new screw shell.

I The precise manner of. fastening the yoke in position may beva ried in many ways and I do not limit my invention to the precise structure shown.

I claim as my invention 2- 1. A lamp receptacle comprising an insushell take, and

struction enables the screw shell to be 1'6- tapped intosaid yoke to hold the latter in lating base, a screw shell'with base flange thereon, a wire terminal yoke, .a plurality of screws passing downward through the base flange of said screw shell and insulating base and threaded into said yoke to mechanically and electrically. connect said screw shell and yoke, in combination with a security screw lying below the base of screw shell andpassing downward through the insulating base of the receptacle and position irrespective of the screw shell hold m screws, substantially as described.

' the holding flange of the screw shell and the base and taking into said yoke, in combination With a screw arranged in the well in the base and beneath the screw shell and passing downward through said'base into engagement with the yoke to hold the latter form a well, a screw shell with holding flange seated in the bottom of said well, a

.current-carrying yoke plate mounted on the inner face of said base beneath said well, a-

plurality of screws passing downward through the holding flange of the screw shell and the base and taking into said yoke, in combination with a screw arranged in the well in the base and beneaththe screw shell and passing" downward through said base into engagement with theyoke to hold the. latter in fixed position to receiveithe screw shell securing screws, said yoke-en gaging screw being inaccessible in the completed fitting.

In testiinonv whereof I have signed my name to this specification, in the presence of two subscribin witnesses.

GEO GE AI GAUTHIER.

Witnesses WM, HENRY Hanmxo'ron, W. S. PRATT.

copies ofthh patent may be obtained for five cents each, bfaddressing the Commissioner of Patents,

Washington, ID. 0.

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