US234477A

US234477A - Extension-chandelier

Info

Publication number: US234477A
Authority: US
Publication date: 1880-11-16
Anticipated expiration: 1897-11-16

Description

T. n. HOTOHKISS. Extension Chandelier.

No. 234,477. Patented Nov. 16, 1880.

Users S'ra'ras Parana Erica.

TIMOTHY D. HOTCHKISS, OF CROMWELL, CONNECTICUT.

EXTENSlON-CHANDELI ER.

SPECIFICATION forming part of Letters Patent No. 234,477, dated November 16, 1880. Application filed December 6, 1879.

To all whom tt may concern:

Be it known that I, TIMOTHY DWIGHT HoTCHKIss, of Cromwell, in the county ofMid dlesex and State of Connecticut, have invented certain new and useful Improvements in EX- tensioil-Chandeliers, of which the following is a description, reference being had to the accompanyin g drawing, which represents a side view, with portions in section, of an apparatus embodying my said improvements.

I will first describe this apparatus, and then, by specific claim,poiut out. in what myinvention consists.

The letter (t denotes a base, to which any convenient number of lamp-bearing arms I) may be pivotally or otherwise attached. This base is attached to a tube, often called a telescopic tube, 0, which has longitudinal movement on the tube (1, which it incloses. The upper limit of this movement is given by the outer tube (considering, now, the coupling 0 to be a part of the tube) striking against the plate or canopy 6 attached to the inner tube. The lower limit of this movement is given by the set-screwy"striking on the bottom of the groove (1 made in the inner tube for this purpose. Another function of this screwfand groove (1 (and for this function it makes no difference whether there is any bottom to the groove) is to prevent the outer tube from rotating on the inner tube, to the end that when such a stop mechanism as is hereinafter described is used the stop-pin may be kept in line with the stop-holes.

On the top of the canopy e are hung, on suit able standards 9, spring-drums, one or more, but preferably two, h h, which are drums inclosing coiled springs, like clock-springs, one end of the spring being fast to a non-rotating axle, h, and the other end fast to the inside of the circumferential case, and the coil of the springs being such as to tend to rotate the drums, respectively considered, in the directions denoted by the overlying arrows.

Metallic ribbons or the like 'i t are wound on and fastened at the end to the spring drums, from whence they run down inside the inner tube and are attached at the other end to the tube 0, so that the tube and its appendages (the base and the lamp-bearing arms) are suspended or supported by the spring-drums.

The springs within these drums are intended, practically, to counterbalance the weight of the tube and its appendages, so that a person can raise and lower the same with but little exertion of strength.

It is, of course, desirable that some means should be provided whereby the tube 0 and its appendages can be stopped at different eleva-tions.

The letterj denotes a lever pivoted near its center on an ear projecting from the tube 0, hearing at one end astop-pin,j, running loosely through the tube and bearing on the surface of the tube cl, being pressed thereto by the spring it under the other end of the lever. In its path, as it travels up and down on the bar, are stopholes l, into which this stop-pin will shoot when permitted, and thereby hold the tube 0 and its appendages at a corresponding elevation.

To make the manipulation. of the lever j, with its stop-pin, handy from beneath, a rod, m, runs from a projecting car on the lever j down to and through a guide-loop, 12, attached to the base a, this rod being suitably knobbed at its lower end.

Where in the following claim I mention the appendages of the tube a, I mean thereby a lamp or burner, one or more, upborne by the tube.

I am aware of the patent to R. J. Skinner, No. 75,064, dated March 3, 1868, showing an extension-chandelier wherein an elastic cord of india-rubber or the like is used to suspend the lightbearing arms, and I do not claim such a device, as I do not wish to have a stronger upward pull exerted at one time than at another.

I claim as my invention- In combination, in an eXten-sion-chandelier, the spring-drums h, borne upon the canopy e, the tube at fast to the canopy, the tube 0 sliding upon the exterior of tubed, with its appendages, and the ribbons t' passing inside both tubes, all substantially as shown and described.

TIMOTHY D. HOTCHKISS.