US150466A - Improvement in drop-light gasaliers - Google Patents

Description

c. n'EAvs. l, Drop-Light Gasaliers.

Patented May 5,1874.

No.l5.0,466.

" jc. DEVS 4Drop-Light Gasliers.

Patented May 5,1874.

UNITE- PATENfr CHARLES EEAYSOR NEW YORK, N. Y., ASSIeNoR To ARcnERa. PAN'eoAST l MANUFACTURING COMPANY, oF SAME" PLAGE.

K r IMPROVEMENT IN DROP-LIGHT GASALIER-S".

Specification forming paxt of Letters Patent No. 150.4166, dated May 5, 1874; application filed V January 13, 1874.

` and I do hereby declare that the following is a full, clear, and exact description of the same, reference being hadto the accompanying drawing, making part of this specification.

This invention consists in the combination of the following parts to produce an improved drop-light gasalier, to wit: A main stem connected to a main distributer, the latter-'provided with stationary branch -light ducts; a drop-light tube arranged to slide up and down within the said main stem, and receiving gas from the ceiling -joint through a stationary supply-pipe, in such manner as to constitute a gas-Way for the drop-light independent and separate from that for supplying the Said main distributer, a toothed rack arranged longitudinally upon the said drop-light tube; a cogwheel arranged to engage the teeth of the said rack 5 asprin g-druin containing a spring, which is wound up bythe act of drawing down the said drop-light tube, and an inclosingcase for covering the said spring drum and cogwheel, all arrangedand having a mode of op` eration as will be hereinafter more fully set forth.

In the accompanying drawing, Figure lis alongitudinal vertical Section of a center-slide drop-light gasalier, taken on the line x x, Fig. 2, and showing my improvements applied thereto. Fig. 2 is a crosssection of the same, taken on the plane of the line y y, Fig. l. Fig. 3 is a front elevation of the same, showin g a modification in the arrangement ot the parts;

'and Fig. 4. is a side view oi the arrangement of parts shown in Fig. 3.

A designates the main stem ofthe gasalier. This stem is shown as provided with an annular gas-duct, a, for supplying gas to the stationary lights through the branch ducts B.

The said branch-light ducts are shown as connected to, and opening into, a distributer, G, y

which receives gas through the annular gasway a. D is-the drop-light gas-duct, and it is a tube arranged to vslide up and down within the main stem A, receiving gas through apipe,

D', and any suitable packing may be employed, as shown at m, for instance, in Fig. l. This drop-light tube D is shown as provided, at its lower end, with a small distributer, b, to which is connected the drop-light. In this particular instance the arms c c of a harp 7 droplight are shown. E is a spring-barrel, mounted ou an axis or arbor, which is attached or connected, in any desirable or convenient manner,

directly or indirectly, to the main stem A. F is an inclosing-case attached to the main Stem A. G designates a rack or series of cogs or teeth, attached to, or cast or formed with or upon, the drop-light tube, and extending along the said tube the required distance, corresponding' to the distance the said tube is designed to be drawn down. H is a cog-wheel mounted on a shaft, I, and arranged to revolve in Suitable bearings ff, attached to the main stem A,

or to a collar thereon, or to a casting or eXf tension-tube, o, connected thereto. This cogwheel H is so arranged on the sha-ft I that its teeth will engage with the teeth of the rack Gr, and, in the example shown, this rack is eX- posed through a slot or opening, g, in the `lower end, of the main stem A, for a sufficient distance to permit of such engagement. The

The spring-drum, in all the figures, is shown as arranged on one side of the mam Stem. This is done to bring the mechanism within as small a compass as possible; but it is obvious thatv the spring-drum shown in Figs. 3 and 4 could be mounted on a shaft directly over the opening y, and so that its teeth should engage with the rack G.

In all the gures I have shown the shaft I as projeetingacross the stem Ato the side opposite to that occupied by t-he Springdrum, in order to show how readily two spring-drums may be employed with heavy drop lights for In Figs. l and 2 this spring-drum operating the shaft carrying the cog-Wheel H, which engages with the rack G.

The'tube D may be provided with any suitable guides for causing its teeth to certainly engage with the cog-Wheel, say by screws h h.

I am aware that the above-described parts of a gasalier are not new, when separately considered 5 and. I do not, therefore, claim the combination of a spring-drum, rack, and cog-Wheel as a sustaining mechanism for an extensionchandelier; nor do I claim a main-stem for a center drop-light gasalier containing two independent gas-Ways 5 but What I claim as my invention, and desire to secure by Letters Patent, is-

The combination, in a gasalier, of the following elements: The main stem A, drop light tube D, supply-pipe D', rack Gr, spring-drum E, cog-Wheel H, main distributer C, inclosin gcase F, and the stationary branch-light ducts B B, the said parts being arranged and havinga mode of operationsubstantially as herein specified.

Witnesses: CHARLES DEAVS.

M. M. LIVINGSTON, A. J. DE LACY.

Images