US1664843A - Shade-supporting adapter for lamps - Google Patents

Description

April 3, 1928.

P. ACKER SHADE SUPPORTING ADAPTER FOR LAMPS Filed May 8. 1926 V INVENTOR PM Q L/M/ BY ATTORNEY Patented Apr. 3, 1928.

UNITED STATES PHILIP ACKER, or BROOKLYN, NEW YORK. I

SHADE-SUPPORTING ADAPTER FOR LAMPS.

Application filed May s, 1926.

The present invention relates to shade supporting adapters for lamps, and is more particularly directed toward a shade supporting adapter suitable for carrying large shades on 6 the posts commonly found in small lamps.

As ordinarily constructed, many forms of bridge lamps use metal covered lamp sockets provided with threads near the open end of the socket. These threads are generally provided on lamp sockets and, in bridge lamps, are utilized for carrying a shade support which may be threaded onto the metal shell of the lamp socket. Bridge lamp shades, as

Well as shades for many other purposes, are 1 made of the size to fit these shade supports so that one may readily attach the shade of the desired design and appearance to a standard metal shadeholder which may, in

turn, be threaded onto the metal lamp socket. Table lamps, junior floor lamps, and the like, are generally provided with a small shouldered pin supported on a harp, or similar device, above the lamp bulb, and the shade is supported from this pin. This type of construction is very common where the shades are smaller than the bridge lamp shades above referred to, though in some cases it is used with large shades having special frames.

The present invention contemplates an adapter suitable for use in supporting the large shades from the small pins on the smaller lamps. This invention permits one to obtain a much wider selection than has heretofore been available, for it enables one to make a selection among all the commercial sizes and designs of bridge lamp shades for use on the larger lamps, as well as allowing a choice from all the small lamp shades.

The accompanying drawings show, for purposes of illustration, two of the many possible embodimentsin which it may take form, it being understood that the drawing is illustrative of the invention rather than limiting the same.

In these drawings:

Figure 1 is a perspective view of one form of adapter;

Figure 2 is a sectional view of the upper part of a table lamp, or the like, showing the use of the adapter for supporting a shade;

Figure 3 is an elevational view of a table lamp provided with a bridge-lamp shade supported by the present form of adapter;

and

Serial No. 107,547.

Figure 4 is a View illustrating a modification.

In Figure 1, which shows one form of the present invention, a unitary sheet metal stamping 17 is provided with threads 18 of the same size as the threads 11 on the socket shell. This stamping is, as here shown, provided with a central ring 19 supported on three bridging straps 20. The adapter may be provided with a peripheral bead 21 around above the threads 18 as shown in Figure 1, or it may have a bead 22 below thethreads 18 as indicated in Figure 4.

mit passing the adapter down over the stem 24 carried on the upper end of a harp 25 or other suitable support commonly found in table lamps, boudoir lamps or the like. The adapter may be placed on this stem 24 and the finial or nut 26 used to clamp it in place against the shoulder 27 of the harp. The heated air from the lamp will pass through the holes 28 between the arms or straps 20.

From Figures 2 and 3, it will be apparent that the shade 16 and the shadeholder 13 may be readily utilized by means of the present adapter on small lamps having a small stud or boss 24. It is of course obvious that any form of shade and shadeholder suitable for use with the thread skirt of the adapter may be employed and that by the use of the present invention, one will be able to carry this type of shade and shadeholder support in the smaller type of lamps.

It is obvious that the invention may be embodied in many forms and constructions within the scope of the claims, and I wish it to be understood that the particular forms shown are but a few of the many forms. Various modifications and changes being possible, I do not otherwise limit myself in any way with respect thereto.

What is claimed is:

1. A shade supporting adapter for lamps, in the form of a sheet metal ring having external threads of the size of the threads on the skirt of a lamp socket cover, whereby a shade support adapted to fit a socket cover may fit the ring, and a spider carried by one end of the ring, the spider being apertured to fit the adapter to a small post, or the like.

2. A shade supporting adapter for lamps, said adapter having an apertured end adapt-- ed to pass over the pin on a lamp shade support, and having a skirt provided with ex- The adapter 17 has a small hole 23 to perternal threads of the size of the threads on the skirt of a lamp socket cover, whereby a shadesupport adapted to fit a socket cover may be mounted on the pin.

i 3. A fitting for an electric table lamp having an upwardly projecting threaded stud provided with a nut, said fitting comprising a cap formed with a central opening adapted to receive said stud, the side Wall of said cap being formed With peripheral threads 10 of the same diameter and pitch as those in an electric light socket, whereby to receive the threaded ring of a. bridge lamp shade.

PHILIP ACKER.

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