US247086A

US247086A - best available cop

Info

Publication number: US247086A
Authority: US
Publication date: 1881-09-13
Anticipated expiration: 1898-09-13

Description

No Model.)

ATTEST:

BEST AVAILABLE COP" H. S. MAXIM.

GHANDELIER FOR ELECTRIC LAMPS.

Patented Sept. 13,1881.

INVENTUH! rms Hwlobtbognpben Wnhmgton. o. c.

UNITED STATES BEST AVAILABLE cop" PATENT OFFICE.

HIRAM S. MAXIM, OF BROOKLYN ASSIGNOR TO THE UNITED STA ES ELECTRIC LIGHTING COMPANY, OF NEXV YORK, N. Y.

CHANDELIER FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 247,086, dated September 13, 1881.

' Application filed January 15, 1881. (No model.)

To all whom it may concern Be it known that I, HIRAM S. MAXIM, of the city of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Chandeliers for Electric Lamps, of which the following is a specification, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to that class of electric lamps in which the light is produced by the incandescence of a strip of conduetin g material inclosed in a hermetically-sealed glass globe; and it consists in improvements, hereinafter specified and claimed, in the devices employed for suspending the said globes in position to give the best luminous effects.

It has been usual heretofore to employ for the support of this kind of lamps a bracket or arm projecting at right angles from the wall,

or from whatever vertical support it may have been necessary to attach them to. It often becomes necessary to suspend a lamp or group of lamps from a ceiling or other horizontal surface; and the design of my present invention is to provide a chandelier for this purpose which which shall be simple in construction, and shall at the same time obviate the necessity of any wires except those conducting the current to the insulated sides of the frame.

In the drawings accompanying and forming a part of this application, Figurel represents, partly in section, the chandelier and lamp arranged in operative relation and suspended from a support. Figs. 2 and 3 are plan views of the upper and lower terminal plates of the 1 rods forming the frame of the chandelier.

As the lamp shown in the drawings forms ect-matter of another application, it will ecessary to describe it here only so far as an xplanation of its several parts is requisite to a better understanding of the present invention.--.

The rods 0 D, forming the main portion of the chandelier, are bent to a suitable form, as shown, and terminate in plates 0 C and D D, which are of a shape to be conveniently securbetween insulating-washers E E and F F by means of clamping-screws or equivalent devices. The conductingplates are insulated from each other by a space, which may be filled with insulating material, if so desired, and are held in place between the washers by pins 0 c. The screw G, which passes through an enlarged space between the plates 0 and D, binds the washers E and E and the plates 0 and D tightly together, and may also be utilized in suspending the bracket by binding it to a suitable support. The plates 0' and D and washers F and F are held together by a serewrod and nut, G. This screw-rod passes through and in contact with one of the plates, as D, and serves both to complete the circuit therefrom to the switch S, and also to clamp the base B of the lamp A to the bracket or chandelier. One of the contact-strips, I), in the base or socket of the lamp is in permanent electrical connection with the plate 0. The other contact-strip, a, is extended by a metallic strip to make contact, when desired, with a spring switch or key, 8, through which, when closed, the circuit is completed to plate D and rod D. The two ends of the line-wires P and N are brought down through the washer E and soldered, respectively, to plates 0 and D. t

It will thus be seen that the path of the current entering from P will lie through plate O, bar 0, plate 0, wire or other permanent connection f, strip 1), and through the lamp to strip to. Returning, the current passes by way of the switch 8, screw G, plate D in contact therewith, bar D, plate D, and from thence to line.

In practice the form of the plates and con necting-rods may be greatly varied without departing from the spirit of my invention. For instance,it is obvious that instead of being suspended from a ceiling or beam the frame may form an upright support for one or a number of lamps. The device illustrated, however, shows a convenient and useful arrangement,in which all the usual conducting-wires may be dispensed with, and which, by its construction, is cheap and durable.

I am aware that in thebrackets hitherto used parts of the same have been utilized to complete the circuit. This, therefore, I do not claim, broadly.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A chandelier or bracket for incandescent "2 BESTAVAILABLE lamps the two sides of which are insulated from each other and eachconnected, respectively, with one terminal of a line-wire and the contact-strip ofa n incandescent lamp,'whereby the circuit may be completed through the lamp and the sides of the bracket-frame, substantially as set forth.

2. The chandelier or bracket for electric lamps, consisting of the conducting-barsO and