US361782A - James t - Google Patents

Description

J. T. ROBB.

GAS AND ELEOTRIG LAMP FIXTURE.

{No'ModelJ Patented Apr. 26, 1887.

K7 2 W 7 a UNITED STATES PATENT OFFICE.

JAMES T. ROBE, OF NEW YORK, N. Y.

GAS AND ELEGTR'lC-LAMP FIXTURE. I

SPECIFICATION forming part of Letters Patent No. 361,782, dated AprilZG, 1887.

Application filed September 26, 1885. Serial No. 178316. (No model.)

. swinging bracket used for supplying either gas or electric light. Heretofore in such fixtures there have usually been two swinging arms, one for gas, the other for electrical conductors, connected mechanically so as to swing together. In my invention I employ only one swinging arm, this being a tube within which is a smaller tube, through which the gas is conveyed, while the electrical conductors pass through the external tube outside of the gastube. This is the main feature of my invention. The external tube takes the place of the ornamental shell or casing commonly employed in gasfixtures. It, however, in this case forms itself the main supporting part, and hence the gas-tube can be made much smaller than, usual.

My invention consists, further, in the novel devices and combinations of devices employed by me to fully carry my invention into effect, as hereinafter set forth and claimed.

My invention is illustrated in the accompanying drawings, in which Figure 1 is a View in elevation of a fixture embodying said invention; Fig. 2, a longitudinal section of the swinging joint and arm with the middle part of the arm broken away on account of lack of space, and Fig. 3 a top view of the stationary part of the joint.

tends below said block, being made in one piece therewith, into the aperture 1), in which it turns, said aperture being closed at the bottom by a cap, 6, and screw f. Part d has a circumferential groove, g, opposite the end of gasway c, and an aperture, h, extends in from said groove to longitudinal aperture 2', which extends up entirely through block D, as shown. Part (Z hasalso a larger groove, 7c, whose pur- 5 pose will be presently explained, and which lies within the collar Z, extending up from part at. There is also an aperture, at, extending longitudinally through part a for the electrical conductors, and this aperture ends within the collar Z.

At the rear side of block D is an aperture, which is closed by the ornamental screw-knob n. Into the opposite side ofpart D are screwed the two tubes which form the swinging arm of the bracket. The external tube, G, is screwed into the collar H, and the small inner gas-tube, G, is screwed directly into the block opposite the gasway. The tubes are of suitable length. At their outer ends they are both screwed together into the head I. A gasway extends through head I to the gas-burner, K, carried thereby. Into the lower side of the head is screwed the hollow neck 0, which carries the incandescent-electric-lamp socket L. The outer ends of the tubes G G are similarly screw-threaded, so that both may be screwed into head I at the same time.

The wires 1 2 are attached to the housewires coming from the wall, and are united into the flexible conductingcord M. This cord extends through the aperture 111, is wound around (I in the groove 70, this groove and the collar 1 forming a chamber to hold the cord, and extends up through hole 1) in block D into tube G, outside of the gas-tube, passes continuously through said tube and through neck 0, and the wires are then connected, in the usual manner ,with the lamp-socket terminals.

In wiring the fixture the cord may be passed 0 through the different parts before they are united together. The screw-knob a may be removed in order to. thread the wire through the hole 1). The passage for the gas is through '0 t0 groove g and apertures h i to tube G.

As the arm is swung in one direction or the other, the flexible cord winds around or unwinds from the groove k. The bracket is so placed relative to the wall or'other object or is provided with a stop of such a character that 10o it cannot be turned entirely around, whereby the cord can be wound only once around the 5 block is applicable to swinging brackets used for electric light only.

NVhile I have shown and described a bracket with only one swinging arm, my invention may evidently be readily used with two or [0 more arms, all the turning joints being similarly constructed.

What I claim is i 1. In a combined gas and electric-lamp fixture, the combination of a stationary part, a

I 5 part turning therein and provided with a groove and carrying a supporting-block, two concentric tubes extending from said block, one for conveying gas, the other inclosing flexible electric conductors, said conductors extending through said stationary part, encircling the grooved portion of said turning part, and passing through said supportingblock into said tube, and a gasway through the parts into the other tube, substantially as set forth. 2. The combination of the stationary part having a collar, Z, and the turning part having a groove, k, with the flexible conductors passing through saidparts and lying in the chamber formed by said collar and groove, substantially as set forth.

This specification signed and witnessedthis 2-.Lth day of July, 1885.

JAlllES ROBB. Witnesses:

P. H. KLEIN, Jr., JNO. F. GEIDEL.

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