US171111A - Improvement in lamps - Google Patents

Description

1.11. EVAMS.

LAMP.

Patented Dec.14,1875.

@W7/ZW UNITED STATES PATENT OFFICEa JOHN A. EVARTS, OF WEST MERIDEN, CONNECTICUT, ASSIGNOR TO THE BRADLEY 8v H'UBBARD MANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 171,111, dated December 14, 1875 application filed October 19, 1875.

To all whom it may concern:

Be it known Athat I, J OHN` A. EVARTS, of West Meriden, in the county of New Haven and State ot' Connecticut, have invented a new Improvement in Attaching Lamp-Founts to Fixtures; and I do hereby declare the following, wheu taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the saine, and which said drawings constitute part of this specification, and represent, in

Figure l, vertical central section; Fig. 2, the lamp inverted; Fig. 3,'top View ofthe l socket.

This invention relates to an improvement in the device for attaching lamp-founts to lixtures, brackets, &:c., the object being to perfectly secure the fount, and yetallow of its easy7 removal, as for lling, te.; and it consists in constructing the lamp-fount with an annular iiange at the bottom, with notches, and the socket with corresponding internal projections, so that the fount may be set into the socket, the said projections passing through the notches, and then the fount turned to bring the ange beneath the said projections, this being an improvement upon the patent granted to Charles F. Linsley, August 31, 1875, No. 167 ,345, assi gn or to the assi gnees of this invention.

A is the lamp-fount, of usual construction, save at the bottom. N car the bottom an annular groove, a, is made, and so as to form a iange, d; through this ange notches e are made, as seen in Fig. 2. B is the socket, constructed to be screwed onto the xture, and preferably with a central spindle, C, corresponding to a central seat, D, in the fount, as

in the said Linsley patent. This socket is of larger diameter thanthe ange d, and so as to inclose that ange. On this socket are internal projections f, corresponding to the notches c in the ange of the lamp.

The fount is placed upon the socket, the

notches e passing down over the projections f in the socket, and then, by turning the fount, these projections pass over the ange, and thereby hold the fount in place.

The central spindle C serves as a guide in placing the fount upon the socket, it being necessary that the spindle enter the seat D before the flange on the fount can strike the projections f; then simply turning the fomit on the spindle as a center, the proper position of the notches e to the projections f is easily found, and without danger ot' tilting the fount.

If preferred, the projections f may be upon the fount, and the notched tlange on the socket, it being simply reversing these parts and, therefore, when the projections f are referred to as being upon the socket, and the notched flange upon the lamp, it is to be understood that they may be reversed, as before mentioned.

I claim- The combination of the socket B, constructed to be attached to the xture, and with the central spindle C andV internal projections f, with the lainp-fount constructed with the central seat D, corresponding to the said spindle, and with the annular flange notched to correspond to the said projections, substantially as and for the purpose described.

JOHN A. EVARTS. Witnesses:

CHAs. F. LINsLEY, FRANK P. EvARTs.

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