US1068105A - Elevator-brake. - Google Patents

Description

W. CARMAN.

ELBVATOR BRAKE.

APPLIUATION FILED MAR.29,1913.

1,068,105, Patented Juy 22, 1913.

llldllllhlll STATE@ rlllllllllllllll @will llld WILLIIVI CARIVIAN, 0F RICHMOND, VIRGINIA., ASSJL'GNGR 0F CNE-HJULF '10 EDlfVARD C. JORGIENSON, OF BRATELEBOR, VERINT.

ELEVATOP-BRAKE.

Patented July 22, 1913.

Serial No. 757,551.

To all whom t may concern:

Be it known that l, WILLIAM CAIMAN, a citizen of the United States, residing1 at Richmond, in the county of -lenrico, State of Virginia, have invented certain new and useful Improvements in Elevator-Brakes; and do hereby declare the following to be a full, clear, and exact description or the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in elevator brakes, and has particular reference to a manually oper'ated brake.

The subject-matter oi this application has been divided out from my original application for improvements in elevator brakes, filed June 8, 1912, Serial Number 702,425.

The principal object olf the invention is to provide a simple device for checking the downward movement of an elevator when the rope breaks, and means t'or holding the elevator from further downward movement.

Other objects and advantages will be apparent from the following description and with particular reference to the accompanying' drawings.

ln the drawings: Figure 1 is a vertical section through an elevator and shaft showing' my invention in inoperative position. Fig. 2 is a similar view showing' the parts in operative position. Fig. 3 is a longitudinal sectional view on the line 3 3 of Fig'. 2. Fig. l is an enlarged vertical. sectional view on the line ll--l of Fig. 3.

Referring particularly to the drawings, 10 represents the side guides oi the elevator shalt. Formed in these guides, at equal distances apart, and the entire length of the same are the stop shoulders or ledges 11 for engagement by a portion of the device to be described later. 0n each of the ledges is disposed a buffer plate 11 supported by the butter springs 12 which absorb a ,great amount of shock incident to the sudden en sagement of the device to be described with the plate.

lk car 12 is adapted to move up and down the shaft. Suspended beneath the floor oi the car, by means of the springs 13 is a bumper plate 141-. Mounted beneath the licor o1 the car on either side thereof, and adjacent the side guides 10, are the housings 15, in which are slidably disposed the loose pins 1G, said pins beine' adapted for engagement on any of the ledges ot the side guides. Also mounted within each or the housings, in rear of the pin 1G is a plunger 1'?, spring held inwardly by means of the spring 18. Slidable vertically through an opening` in the floor oi the car is a foot plunger 19, and pivotally connected to the lower end of said plunger, at their inner ends, and at their other ends to the plungers 17 are the links 20. lllhen the foot is pressed on the foot plunger 19, the links 20 will force the plungers 17 outwardly, and torce the pins 16 against the side guides, so that they will engage the plates 11 on the ledges 11. Upon releasing1 the foot :trom the plunger 19, the springs 18 will return the plungers to normal retracted position, leaving' the pins partly resting;` on the plates 11 on the ledges 11 and partly within the housings. rlhus the car is suspended until the cable 21 can be repaired. lo release the pins 16 from the side guides, after the cable 21 has been repaired, and it is desired to start the car again, l use the means now to be described.

lo the rear of each of the pins 1G I secure a cord or cable 22, both of said cables extending),1 within the car and being connected together to a sinpgle cable 23, suitably suspended within the car. lk handle 9&1 is secured to the said terminal so that a pull thereon will draw the cables 25 and move the pins 16 from the ledges 11, and into the housings 15. rlhus when the rope breaks, the operator presses his Jfoot on the foot plunger 19 to throw t-he pins 16 outwardly to engage in the ledges on the side guides.

lillhat is claimed is:

il brake device for elevators comprising' opposite side guides, having;l ledges, spring supported butler plates on the ledges, houson the opposite sides oli the car, spring;- retracted plunners in the housings, pins loosely vmounted in the housings for pro- 5 ject the pins from the housings, and hand operated means for withdrawing the pins :from engagement with the side guides.

In testimony whereof, I my signature, 1n the presence of two witnesses.

WMI. CARB/IAN.

Titnesses E. E. NLARTINEAU, ORDwAY VULLA.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents Washington, D. C.

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