US1585109A - Adapter for electric lamp sockets - Google Patents

Description

May 18 1926.

A. C. RECKER ADAPTER FOR ELECTRIC LAMP socxms Filed April 5, 1924 Patented May 13, 1926,

ADOLPH C. BECKER, OF \VATERTONN, CONNECTICUT. ASSIGNOB TO CHASE PANIES, INQ, OF VJA'IERBURY,

hSdSdd PATENT FFICE.

CONNECTICU'I, A CORPORATION.

ADAPTER FOR ELECTRIC-LATE? SOCKETS.

Application filed April 5,

Fig. 1 is a View in side elevation of my improved adapter, as constructed for use with miniaturebulbs, shown on the double scale.

Fig. 2 is a plan View thereof.

Fig. 3 is a view thereof in central section, showing it as applied to a standard socket of the Edison type, shown in broken lines.

Fig. i is a view in central section of a modified form of my improved adapter, shown as designed for use with candelabra bulbs.

My invention relates to an improved adapter for electric lamp-sockets, the object being to provide, at a low cost for manufacture, simple, convenient and effective means, whereby a standard lamp-socket of the Edison type may be adapted or converted for use with bulbs having small stems, such as the so-called candelabra and min iature bulbs.

W ith these ends in view, my invention consists in an adapter for electric lampsockets having certain details of construction and combinations of parts as will be hereinafter described and particularly pointed out in the claim.

In carrying out my invention, as herein shown, I employ a screw-shell 5 having standard screw-threads to lit alamp-socket ot the Edison type and having its upper edge turned inwardly to form a reflector 6, the edge of which has clamped upon itthe outer end of a concentric sheet-metal shell 7 threaded to correspond to the threads of the stem of a miniature bulb, and therefore considerably smaller in diameter than the screw-shell 5 within which the smaller shell 7 may be said to be suspended. At its 1924. Serial noj'roeasi.

inner end, the smaller shell 7 mounts an insulating disk 8 carrying a centrally-arranged contact-stem 9 adapted in length to engage with the center-contact 10 ot' the socket 11 of a standard socket of the Edi son type, the said contact and socket being shown by broken lines.

W hen the miniature bulb has its stein screwed into the inner shell 7, it is in electrical connection with the outer shell 5, while the bulbs center-contact is in electrical con nection with the center-contact ot' the socket 11 through the stud 9.

In the modification shown by Fig. 4, the screw-shell 5 is formed with a flange 12 turned inwardly at a right angle and having superimposed upon it a flanged disk 13 of insulating material held in place by crimping upon it at 14: the outer end of a concentrically-ar 'anged inner shell 15, adapted in size and threading to correspond to the size and threading of a so-called candelabra bulb. In this case, the adapter is screwed into and out of the standard socket by grasping the flanged edge of the insulating disk 13, whereby the user is protected against shock.

I claim:

In an adapter for electrical lamp-sockets, the combination with a threaded shell, pro vided at one end with a reflector, of a smaller inner shell supported by the said reflector concentrically within the outer shell, and a contact-stem mounted in the opposite end of she inner shell and insulated therefrom.

In testimony whereof, I have signed this specification.

'AJJOLPH o. BECKER.

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