US325971A - Elevator - Google Patents

Description

, 2 Sheets-i-Sheet .1.

' (No Model.)

' H.J. REEDY.

ELEVATOR.

No. 325,971. Patented Sept. 8, 1885.-

28he'ets-Sheet 2.

(No Model.)

11. J. REEDYL ELEVATOR.

Patent ed Sept. 8,

N PETERS. Pholo-Lilhognphur. Wnhingtun. 04 C.

3 UNITED STATES PATENT 4 OFFICE.

HENRY REEDY, OE CINCINNATI, OHIO.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 325,971, dated September 8, 1885.

Application filed September 8, 1884. (No model.)

To all whom it may concern: I

I Be it known that I, HENRY J. REEDY, a resident of Cincinnati, in'the county of Hamilton and State of Ohio, have invented-certain new and useful Improvements in Elevators, of which the following is a specification.

My invention relates to the mechanism for opening and closing the valve to stop and start the elevator.

The object of my invention is to provide suitable mechanism for opening and closing ,the valve slowly,soas to avoid the shock andjar incident to the stopping and starting of the hydraulic elevators. It consists in connecting the stopping and starting pulley with the valves by gear devices intermediate between the shiftingpulley and the va1ve,so arranged as to have the valve-pulley move at a relatively slower speed than the shifting-pulley, all of which will be fully set forth in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 isa front elevation of my improvement applied to an elevator. Fig. 2 is a side elevation of the same; Fig. 3,2. top plan view of the gear devices. Fig. 4 is a longitudinal sectional view of the valve -cylinders and frame, and Fig. 5 a top plan of the same.

A represents the cab; B B, ordinary side guide-posts; G, the main driving-pulley over which the cable a winds to raise and. lower the cab A.

I have not shown the connecting mechanism of the pulley O with the main driving devices operated by the hydraulic motor, as these may be of any Well-known form of construction.

D represent the shiftingpulley, over which the cable E is Wound in the ordinary manner.

F represents a sheave, and G a weight for keeping the cable stretched taut.' This is an important feature, as it automatically takes up the stretch of the cable. The movement of cable E drives pulley D in one direction, say, for opening the valve, and the reverse movement of cable E closes the valve.

In order that the movement of the valve in opening and closing may be gradual, so as to avoid the jars occasioned by suddenly introducing or cutting off of the supply of water, I employ gearing-back devices intermediate between the shifting-pulley D and the valvepulley H.

and other breakages that are currence in the ordinary sudden mode of openpinion keyed likewise upon transmitting-gearJ K the speed of pulley D and cable E is much greater than the speed of the secondary cable N and valve-pulley H; hence the cable E must be moved by the operator riding on the cab A a considerable distance before. the valve-pulley H is moved a sufficient distance to open or close the valve; hence the cab A is started and stopped slowly by the operator without occasioning any shock or jar. This is very important, not only in the operation of the cab for the ease and comfort of the passengers, but it is very important in obviating danger of breaking the machinery by the shocks or water-hammer, which is entirely avoided by my slowing devices, which also obviates the bursting of the pipes of common ocing and closing the valve on hydraulic elevators in common use. p I

Referring to Figs. 4 and 5, the numerals 1 2 represent the two valve-cylinders; 3, induction port; 4, eduction port or pipe. 5 represents, say, the starting-valve; 6, the stoppingvalve. 7 7 represent inlet-ports to the cylindrical valve 5, which, when raised in the position shown in Fig. 4, allows water to be discharged in pipe 8. From thence it passes out pipe 9 into the piston-chamber of the main driving-piston. Valve 6 being closed, the force of the water is exerted upon the drivingpiston. 10 represents the val ve-frame mounted on the cylinders 1 2. H represents the valve-pulley,.journaled to the frame or plate 10. 11 represents a spur-gear on shaft 12. 13 represents the rack on rod 14. 15 repre sents inclines on rod 14, which passes through slot 16 in the valve-stems 17, and raises and lowers the valves 5 and 6. As shown inFig. 4, piece 15 has raised valve 5 off its seat, and. the water is passing into the cylinder.

shaft 14 is reciprocated in the opposite When direcof cable E, shifting-pulley D, around which {5 said cable passes, pulley I and valve-pulley H, cable N, connecting said pulleys I and H. and gears J and K, of varying diameters and connecting with pulleys D and L, to move cable N at a slower speed than E, substantially 20 as described.

In testimony whereof I have hereunto set my hand.

HENRY J. REEDY. \Vitnesses:

E. E. W001), J os. L. GooMBs.

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