US1081498A - Electric-light fixture. - Google Patents

Description

L. GUDEMAN.

ELECTRIC LIGHT FIXTURE. 'AIPLIOATION FILED JAN. 27, 1913.

1,081,498. A Patented Dec. 16, 1913.

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LEO G'UDEMAN; on NEW YORK, N. Y.

ELECTRIC-LIGHT FIXTURE.

Specification of Letters Patent.

Patented Dec. 16,1913.

Application filed January 27, 1913. Serial No. 744,315.

To all whom it may concern:

Be'it known that 1, Leo GUDEMA'N, a c1 t1 Zen of the United States of America, residing at New York city, in the county and State of New York, have invented certain new and useful Improvements in Electric- Light Fixtures, of which the following is a specification.

My invention relates to an improved form of electric light fixture, and has especial reference to a fixture of the upright type in which the socket for the light bulb is supported at the upper end of the fixture. The body or frame of fixtures of this type 1s usually made of flexible material such as wicker or ratan, and when it is desired to screw the socket home on the insulating pipe which supports the same, the wicker frame is subjected to a considerable amount of torsion whereby this frame is likely to be de formed or permanently fractured.

The primary object of my invention is to provide a fixture wherein the socket may be screwed home firmly without subjecting the frame of the fixture to any substantial strain. I

The invention consists in the novel structural features and combination of parts hereinafter fully described, illustrated in the accompanying drawing, and particularly defined by the appended claims.

In the drawing, Figure 1, is a side elevational view of an electric light fixture the bulb itself being omitted; Fig. 2, is a vertical sectional view taken substantially on the line 22 of Fig. 1; and Fig. 3, is a horizontal sectional view taken substantially on the line 33 of Fig. 2.

Referring by reference characters to the accompanying drawing, the numeral 10 designates the standard or upright portion of the fixture, this portion being secured to or formed integrally with the base 11. In practice both the base and the upright portion are usually of a somewhat conical for mation having a general upward taper, and both the base and the upright or standard are made of flexible material. Carried at the upper end of the standard is the socket 12 for the electric light bulb, this socket being connected to the usual cable 18 formed of current conductors, this cable entering the base 10 through the aperture 14;. In

practically all of these fixture constructions fire underwriters require that the wires within the fixture shall be insulated by some means additional to the usual insulating tape about the wires themselves. The most approved type of insulation takes the form of an iron pipe or tube 15 extending approximately centrally and vertically through the standard 10. According to my invention this tube is externally threaded for a short distance near each end thereof, the upper thread being designated as 16 in the drawing and the lower thread 17, and it is to the up per thread 16 that the socket 12 is removably attached. To enable the socket 12 to be screwed down tightly on the thread 16 I adopt the following arrangement :Near the upper end of the standard 10 and in ternally thereof 1 place a block or plug 18, of soft, slightly compressible, material such as wood, and this block is centrally orificed to receive the tube 15 with its contained con ducting cable 13. Carried by the threaded portion 16 of the pipe 15, is an adjustment nut 19, which is adapted to take against the under face of the block 18, and for the purpose of retaining the nut 19 in adjusted position there is threaded onto the part 16 of the pipe 15 a set nut 20 which is intended to be jammed against the under face of the adjustment nut 19.

The lower end of the standard 11 is closed by a centrally orificed substantially circular base plate 21 which is designed to support superposed plates 22 and 23 graduated in size to correspond to the curvature of the base 11. Both plates 22 and 23 are centrally orificed or apertured to receive the threaded end 17 of the tube 15, and this threaded end carries the oppositely disposed clamp nuts 2-1 and 25 taking against a washer 26 or 27. The washers 26 and 27 rest against opposite faces of the blocks 22 and 23, and by screwing home the nuts 24: and 25 the pipe 15 is tightly clamped in position in the blocks 22 and 23.

28 designates the chain by means of which the lighting circuit leading to the socket 12 may be made or broken.

The upper face of the base plate 21, and the lower face of the block 23 are each provided with a semi-circular groove, these grooves being alined to form the horizontal annular groove 29 through which the cable 13 extends to the lower end of the vertical pipe 15.

From the construction above described it will be noted that the tube 15 virtually carries the essential parts of the mechanism necessary for lighting purposes. During manipulation of the socket 12, either screwing the same down or up on the thread 16, practically no torsional strain is transmitted to the upright standard 10, but all the strain is taken by the block 18 and thence transmitted to the pipe 15 and the superposed blocks 22 and 23. In this manner it is not only possible to screw the socket 12 more tightly in position than heretofore, but all damage to the upright 10 and distortion thereof is avoided.

What I claim is 1. An electric light fixture embodying therein a base carrying an upright standard, a block of compressible material frictionally engaging the inner wall of said standard below its upper end, a plate in the base of said fixture, .a pipe passing through said block and said plate, meansfor adjusting the position of said pipe within the standard, means for retaining the pipe in adjusted position in the standard, and a socket means engaging the threads near one end of said pipe for clamping the same to said superposed plates, means engaging the threads near the other end of said pipe for adjusting said pipe within the standard,

and a socket engaging said last named thread and adapted to take against the block in said standard.

In testimony whereof I have affixed my signature in presence of two witnesses.

, LEO GUDEMAN.

Witnesses:

T. LEVY, J. H. B. DONALDSON.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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