US1886634A - Lamp - Google Patents

Description

Nov. 8, 1932. l, BROWN 1,886,634

LAMP

Filed July 29, 1930 NVENTOR 6.07/16 Bra m l /VM ATTO R N EYa' Patented Nov. 8, 1932 CHARLES INNESS BROWN, OF QUEENS VILLAGE, NEV YORK LAMP Application filed July 29, 1930. Serial No. 471,443.

This invention relates to electric lamps, particularly to table lamps, especially suitable for use on dressing tables or elsewhere, where a soft light is desired.

The principal object of the invention is to provide a lamp of this type of simple construction permitting easy assembly and replacement of the bulb or other parts and which shall give, when lighted, a substantially uniform glow from its various portions.

I have found in accordance witii my invention that a lamp having a translucent base suoli as semi-opaque glass and a shade litted thereover of like material with an electric bulb positioned about centrally inside to illiiminate equally the base and the shade, will produce such a substantially uniform glow when lighted.

The invention accordingly comprises the novel devices and combinations thereof'. specific embodiments of which are described herein by way of example only and in accord` ance with the manner in which I now prefer to practice the invention.

The invention may be more clearly unc erstood by reference to the accompanying drawing in which Fig. 1 is a perspective view of a lamp made in accordance with my invention; Fig. 2 is a vertical central section of the lamp; and Figs. 3 and 4 are vertical central sections of modifications of the lamp structure.

Referring now to thedrawing, the numeral 1 represents a hollow cylindrical base of said translucent material here preferably shown as semi-opaque glass. The base has a narrowed cylindrical integral neck portion 2 projecting from the upper portion thereof. 3 designates a conical removable shade also preferably made of the same hard translucent material such as semi-opaque glass and provided with a narrowed downwardly extending cylindrical integral neck portion 4 fitting` about the neck portion 2 and supported on the flat shoulder which extends between the neck and the body of the base. As herein shown the visible portions of the shade and base including the neck portion of each have substantially the same light-transmitting properties. Together the shade and base make preferably a completely enclosed lamp in which preferably an electric bulb 5, constituting the source of light for the lamp, is

situated. rlChe bulb is supported in a socket 6 mounted on a screw-threaded stein 7 which i." passes through an aperture in the concave base 8. Washers lie about this stem 7 on the upper and lower sides respectively of the base 8 and a nut 10 holds the various parts assembled in fir-:ed position. Current is sup- Lo plied to the bulb through wiring 11 passing through an aperture in the side of the base 1. rthe concave base permits the supporting means for the socket to be raised above the lower extremity of the base sothat the lower 5&5

edge of the latter sits direct-lyon the table or other support.

The bulb 5 is here shown as provided with av substantially circular filament 12 which is located about centrally of the lamp preferably within the necks 2 and 3.

The lamp shown in Fig. 1 is provided with a detachable plug 13 and switch 14.

lil/*hen current is supplied to the bulb 5, the

light from the filament which as shown is .$76.5

There is thus produced a beautiful F up of parts which resemble a lspade in cross Q5 section. rthe base or stem of the spade 15 has a short cylindrical neck 16. The upper portion 17 of the spade has an aperture fitting over the neck 15, the wall 18 adjacent the aperture lying on the fiat shoulder 19 between "30 the neck and the stem 15. In Fig. 4 a globular base 20 is shown with a somewhat flattened conical shade. rlhe lamp 5 in this instance is supported by means of the stein which projects through an aperture in the upper fiattened surface of a truncated cone 21 molded toproject inwardly from the base V2O as shown in Figs. 3 and 4. Y lt will be'noted that the filament 12 in each of the bulbs in Figs. Band 4 11"'00 is located about the center ofthe lamp so that the light shed to the various parts of the lamp is diffused with about equal intensity from those parts. 'Ihe shade and base in each of these figures is preferably made of translucent semi-opaque glass.

The light passing through the shade and base when diffused is of about equal intensity from all portions of the lamp above the lowery most edge of the base. Since thisedge rest-s on the table or the support light such as passes through the bottom of the base will not be directly seen. Due to the presence of they Y socket above the bottom of the base, of course the light passing through this bottom will not be of uniform intensity `when such a soc-lietV is used.

' VIn the claims Vwhere I use the expression Y i supported directly thereby in referring to the support of the shade by the base, I mean that the base supports the shade without any intermediate metal or other material cfa non-translucent character. Y

It will be understood that the. lamp may take other forinsthan as herein shown.'Uv I lmay use other material than semi-opaque glass. Vit is preferable, as indicated, thatthe base and shade completely enclose the source of light and that each of them be made of translucent material vpreferably having about the same light-transmitting qualities. I prefer to have the construction .as simple as possi- Y ble by providing the necli portion about which the upper part or shade of the lamp is sup? ported and am able to do away with other more complicated supporting means and atk the same time to preserve the desired light diffusing characteristics of the lamp. By making the body and shade of hard self-sustaining material such as glass, I am also able to do away with ribs and like sustaining Y means for the base and, shade and therefore to preserve Vthe light-transmitting character- Y ist-ics of these parts throughout.

Vf hat I claim asnew and desire to secure by Letters Patent is ,v

l.V A lamp having a separable light diffusing glass base and shade, said base compris- Y ing a hollow body with substantially vertical side walls terminating at the upward ends in a substantially horizontal inwardly directed ledge having an upstanding flange protruding from the inner edge thereof, said shade comprising a hollow body having at its lower end an inwardly directed substantially horizontal portion adapted to form a support for said shade upon said ledge, an incandescent lightpositioned within said lange and being -of smaller diameter than said iange, whereby saidincandescent light transmits direct light to substantially all interior surfaces of said Walls andshade to give a substantially uniform glow to allvisible'parts Vof the'lamp.

2. A lamp according to claim l in which the

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