US1724091A - Lamp-shade adapter - Google Patents

Description

Aug. 13, 1929. w JAEGER 1,724,091

LAMP SHADE ADAPTER Filed April 22, 1927 I FIG. I.

MKMKMKO wlmssssi i INVENTOR:

6Q William Jcceger, W W

ATTORNEYS.

Patented Aug. l3, T929.

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WILLIAM JAEGER, O PHILADELPHIA, PENNSYLVANIA.

LAMTfiHADE ADAPTER.

Application filed April 22,

This invention relates to shade adapters useful in connection with lioor or table lamps, more particularly to lamps sing electricity as the illuminating medium.

Tu the standarized and accepted construction of such lamps, the supporting level for the shades is fixed; or, in other words, nonadjustable relative to the illuminating bulbs. As a consequence it is impossible to obtain an esthctic balance oi the lamp as a whole, or the most eiiicient lighting effect with diliterent types of shades especially when their vertical depth varies over a comparatively wide range.

The object of my invention is to overcome the diiliculty to which attention is directed above through provision of very simple, inexpensive and univei'sallyapplicable adapter in the form of a supplemental stem designed to constitute an upward prolongm tion 01 the lamp post or column and to afford the shade support at the proper level over the luminary source.

in the drawings, F I is a fragmentary elevation of a floor lamp of standard design and construction with its shade in section to expose parts which would otherwise be hidden, also showing in dot-ted lines the use of my improved adapter in suiting the lamp to a shade of a di rent style.

Fig. TI is a sectional view, on a larger scale, taken as indicated by the arrows TlTT in Fig. T.

F HT and TV are perspective views of adjunctivc parts of the adapter; and,

Fig. V is an illustration, similar to Fig. Tl, showing the use of my adapter in connection with lamps which differ slightly in certain dimensions.

The lamp chosen for convenience of illu tration herein is intended for electrical illumination, the post or column being tubular for passage of the current conductors (not shown) and surmounted by a head 12. his head carries a pair of incandescent bulbs 13, and within its hollow accommodates the spliced joints for connections be tween the bulb leads and the current conductors. The lower cup section 14- of the head 1 is centrally apertured to lit over the column 10, and rests on a collar 15 having screw engagement with the threaded portion of said column at 16. The cup section 14 clamped in position by a bracket-like member 17 having a tapped upper arm to take a screw 18 with projection of the latlamp shade Serial No. 185,866.

ter axially through the cap piece 19 of the head 12. The function of supporting the 20 is ordinarily relegated to the head 12, with such. shade secured in place by a knob 21 engaging the screw projection 18. The level of the head 12 is therefore fixed relative to that of the illuminating bulbs 13, and at the proper height to suit a comparatively flat shade 20 such as shown in full lines in Fig. I, but altogether unsuited to a shade such as indicated in dotan d-dash lines at 22 of greater vertical depth and differing in general configuration.

Still referring to Figs. 1 and IT and proceeding with the description of my adapter, the same is comprehensively designated 25, and will be observed as embodying a tubular stem piece 26 with an enlargement 27 at its lower end. This enlargement 27 is internally threaded to take, with provision for in terchangeability, a connector bushing 28 (Fig. III) which is tapped to engage the screw projection 18 of the head 12. Thus, when attached as shown in Fig. II, the adapter forms in effect, an upward prolongation oi the column 10 above the head 12. The upper end of the stem piece 26 is internally threaded at 29 for reception of an extender screw 30 (F ig. TV), as well as externally tl'ircaded at 31 for engagement by a collar 32 intended to serve as support for the shade 22 at the higher level, as indicated in dotted lines in Fig. l. The extender screw 30 is of the same caliber and pitch as the screw projection 18 of the head 12 for capacity to take the shade securing knob 21 originally associated with said proection.

In cases such as instanced in Fig. V where the caliber of the screw projection 18 of the head 12 corresponds to that of the tubular stem piece 26, the connector bushing 28 is entirely dispensed with, and said stein directly applied in accordance with the illuss tration. Under these circumstances, the extender screw 30 of Fig. H is likewise discarded, and the shade securing knob 21 ap plied to the tl'ireading 31 at the upper end of the stem piece 26 which serves the collar 32.

In practice, the adapter of my invention is made in different lengths, so that by proper selection, the lamp may be suited to any style of shade. The inherent simplicity of the adapter, it will be seen, not only renders its application very easy, but is conducive to ready and economic manufacture in quantity.

Having thus described my invention, I claim:

1. A shade adapter for floor or table lamps comprising an element having a coupler at one end with an interchangeable adapter, a shade supporting member adjustable externally upon the other end of the stem, and an extender screw in said last mentioned stem end to afford connection for a shade securing knob.

2. A shade adapter for floor or table lamps comprising a tubular stem having a co-operative coupler at the lower end including an interchangeable adapter bushing, an adjustable shade supporting collar threaded externally on the upper end of the stem, and an extender screw in said upper end for reception of a shade securing knob.

In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsyl- Vania, this 14th day of April, 1927.

WILLIAM J AEGER.

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