US249500A

US249500A - Extension-chandelier

Info

Publication number: US249500A
Authority: US
Publication date: 1881-11-15
Anticipated expiration: 1898-11-15

Description

J. TgBRUEN.

EXTENSION HANDELIER.

(N0 Model.)

No. 249,500. Patented Nov. 15.1881.

N. PETERS. FlmmLumgmplmr, wnslvingtmn D. t;

pose of engaging it with and UNITED 'STAT-s PATENT OFFICE.

JOHN T. BRUEN, OF BROOKLYMNEW YORK.

EXTENSION-CHANDELIER.

SPECIFICATION forming part of Letters Patent No. 249,500, dated November 15, 1881. y

Application led February 17, 1881. (No` model.)

To all whom it may concern.:

`Be it known that I, JOHN T. BRUEN, of Brooklyn, in Kings county and State of New York, have invented certain new and useful Improvements in Extension-Chandeliers, ot which the following is a specitication. The object ofmy improvements is to produce a simple andinexpensi re extensible chandelier comprising means for locking the extensible part in position in apositive and reliable manner, andvWitli `no limit to the sustaining-power of the chandelier except the strength of the materials employed in its construction.

To this end my improvements consist inthe combination, in an extension-chandelier with a toothed rack on one part, of a catch arranged in a slideway extending from the other part and whollysupported by said slideway, and means preferablyconsistin g of a cam-plate acting on the catch and adapted to move ittrans'- versely with relation to the rack, for the purdisengaging it from the rack. They also consist in the combination, in a chandelier with a toothed rack on one part, of a catch arranged in a slideway extending from the other part, and a cam-plate arranged in a cavity or chamber at the end of said slideway for acting on the said catch, and adapted to engage it with and disengage it from the rack. They also consist in the combination, in a chandelier with a toothed rack on one part, of a catch arranged in a slideway extending from the other part, a cam-plate arranged in a cavity or chamber at the end ot' said slideway for actuating the catch, and a push-rod for op` erating the cam-plate. i

They also consist in thecombination, in a chandelier with a toothed rack on one part, of a catch arranged in a slideway extending from the other part, a cam-plate for actuating the catch, and a spring acting on the cam-plate.

They also consist in the combination, ina chandelier, with a toothed rack on one part, of a catch arranged in a slideway extending from the other part, a cam-plate arrangedin a cav-` ity or chamber at the end ot' said slideway for actuating the catch, and a stop for the cam plate. i They also consist inthe combination, in a chandelier with a toothed rackon one part, of

` being in section.

and a plate forming a cover for thepart which receives the rack, forming a guide for the rack, and constituting a spring acting on the eamplate. I may combine With these partssprings for supporting the extensible part.

In the accompanying drawings, Figure l is a central vertical` section of a portion ot an extensible chandelier embodying my improvements. Fig. 2 is a top view thereof', with the top plate ot' the slideway removed, the `rack Fig. 3 is a central vertical section of an extensible chandelier of slightly modified form, embody-ing the improvements;

and Fig. et isa top view thereof, with the top plate of the slideway removed, the rackbein g in section.

Similar letters of reference designate corresponding. parts iu all the figures.

Referring irst to Figs. land 2, A designates a toothedrack or indented bar, which, as represented, is intended to be comprised in the stationary upper part ot' the chandelier.

B designates a tubular stem comprised in the extensible lower part of the chandelier, and adapted to receive the rack within it. It is not necessaryY for the purposes ot' my improvements that this stem should be tubular, so long` as it is adapted to receive the rack. The turning of rack A and tubular stem B relatively to each other is prevented by a plate, G, secured to the top of the tubular stem,` and provided with an openin g, Within which the racl; snugly flts,'so that the said plate forms a guide t'or it. At the lower end the rack A is furnished with a disk or head, b, which fits snugly within the tubular stern B and causes the rack to occupy a central position therein.

. From the upper end of the tubularstem B there extends laterallya slideway, D, containing a catch or detent, E, which is adapted to `slide .therein toward and from, or transversely `which is arranged'a cam-plate, Gr, provided with arod or stem, G', which is intended to purpose.

extend near to the bottom of the lower extensible part of the chandelier. This cam has an oblique slot, c, with which enga-ges a spur or projection, s, on the adjacent edge of the catch or deteut E.

l It will be ohserved,by reference to Fig. J, that the end of the catch or deteut E which is adjacent to the cam-plate Gr is cut away, and that the cam-plate is offset on one side of its stein, so that the two will be as nearly in 'line as is practicable. Ihe top of the cam-plate G protrudes through the top ot' the socket or chamber F, and the plate G is extended so as j bear on it and form a spring, which will impel it downward into the position shown in Fig. 1.

The bottom ofthe socket or chamber F forms? a stop to limit the downward movement of the cam-plate. 'When the cam-plate is in this position it holds the catch or deteut in engagement with the rack A, and when the cam-plate is pushed up by means of its stem it moves the catch or deteut outward, so as to disengage it from the rack A.

It is obvious that if a spring were applied lacking the slot, but having its top so inclined that when pushed upward it will draw the catch or deteut outward and disen gage it from the rack, may be employed. It is obvious that the plate C also forms a cover for-the lower extensible part.

Referring now to Figs. 3 and 4, I have there illustrated a chandelier which is like the one just described, except that the catch or deteut E and cam-plate Gr are turned around, so that the cam-plate is pulled down to disengagc the catch or deteut from the rack. The springplate C here, ofcourse, impels the cam-plate upward instead ot' downward, and it engages with a notch in the cani-plate to enable it to do this.

It is obvious that, instead of, forming teeth in the edge of the rack, I may form teeth or bars in therack by slotting it at intervals longitudinally at the center. When the rack is thus made the catch or deteut will preferably be turned up on edge'to engage with the rack.

The usual or any suitable springs may be employed to more or less counterbalance the weight of the extensible part ofthe chandelier. I have shown spiral springs S in Fig. 1 for this A I may, however, employ a convolute spring with a cord or tackle extending downlwardly from it to the lower portion of the extensible part.

In this case the rack may be hollow or provided with a longitudinal cavity, and may consist of a transverse-slotted tube, and the cord or tackle can pass through its cavity.

What I claim as my invention, and desire tov and means acting on the catch and adapted to move it transversely with relation to the rack for the purpose of engaging it with and disengagin g it from said rack, substantially as specitied. i 2. In an extension-chandelier, the c ombination, with a toothed rack on one part, of a catch arranged in a slidewayextendingfrom the other part and wholly supported in said slideway, and a cam-plate actin gon the catch and adapted to m'ove it transversely with relation to the rack for the purpose of engaging it with and disengaging it from said rack, substantially as specified. t

3. In anV extension-chandelier, the combination, with a toothed rack on one part, of aeatch arranged in a slideway extendingfrom the other part, and a cam-plate arranged in a cavity or chamber at the end of said slideway for acting on the said catch', and adapted to engage it .with and ndisengage it from the rack, substan- 'the catch, and a spring acting on-the camplnte, substantially as specified.

6. In an extension-chandelier, the combination, with a toothed rack on one part, of a catch arranged in a slideway extending from the other [o5 part, a cam-plate arranged in a cavity or chainber at the end of said slideway for actuating the catch, and a stop for the cani-plate, substantially as specified.

7. In an extension-chandelier, the combina- 11o tion, with a toothed rack on one part, of a catch arranged in aslideway extendingfroin the other part, a cam-plate actuating the catch, and a plate forming a cover for the part which receives the rack, forming a guide for the rack, 1 x5 and constituting a spring acting'on the camplate, substantially as specified.

8. In an extension-chandelier, the combination, with a toothed rack on one part, of a catch arranged in a slideway extending from the other 1 2o part, a cam-plate arranged in a cavity or chamber at the end of said slideway for moving said catch toward and from the rack transversely thereto to engage it with or disen gage it from the rack, and a spring or springs for more or less counterbalancin g the weight of the extensible part,.substantially as specified.

JOHN T. BRUEN.