US468044A - hultgren - Google Patents

Description

(No Model.)

W. H. HULTGREN. VALVE OPERATING DEVIGB POR ELEVATORS.

Patented Feb. 2, 1892.

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UNITED STATES PATENT OFFICE.

XVILLAM ll. HULTGREN, OF CIIICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ALBERT B. ELLITHORPE, OF SAME PLACE.

VALVE-OPERATING DEVICE FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 468,044, dated February 2, 1892.

Application filed March 31, 1891. Serial No. 387,l36. (No model.)

To all wir/0777] it may cmwern:

Be it known that I, WILLIAM H. HULTGREN, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Valve-Actuating De- Vices for Elevators; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of o reference marked thereon, which form a part of this specification.

This invention relates to improvements in devices employed in connection with hydraulic or steam elevators to govern the move- I 5 ments of the Valve which controls the admission and discharge of a fluid to and from the hydaulic or steam cylinder which contains the movable piston, through the medium of which power is applied to the car for moving the same.

The invention consists in the matters hereinafter described, and pointed out in the appended claims.

In the accompanying drawings, Figure l is a view in central vertical section of an elevator-shaft and a car therein, illustrating valve-actuating devices constructed in accordance with my invention. Fig. 2 is aplan section of the car with my improved Valveactuating devices attached thereto. Fig. 3 is an enlarged plan View of the rope sheaves or pulleys shown in Fig. 2. Fig. t is an enlarged detail side elevation of the said sheaves or pulleys. Fig. 5 is a detail section taken upon line 5 5 of Fig. 3.

As illustrated in said drawings, A indicates the elevator-shaft, and A' a cross-piece at the top of the same, upon which cross-piece is mounted a pulley a, over which passes the 0 supporting-cable a' of the elevator car or cab B.

C indicates a lever located, preferably, near the bottom of the elevator-shaft and mounted midway of its ends upon a rock shaft c,

through the medium of which the controlling- Valve of the engine or hydraulic cylinder is actuated.

D D' indicate valve-controlling cables located within the shaft A. said cables D D' are each attached at one end to the valVe-operating lever C at the bottom of the shaft, ex-

tend upward through the shaft, and pass over pulleys E E' at the top ,of the same,and from said pulleys pass downwardly over or around sheaves upon the car B, which will hereinafter be described, and are immovably Secured or anchored at their opposite ends to the bottom of the shat't.

d d' indicate stationary eyes or rings, to which the lower ends of the ropes D D' are Secured.

The pulleys E E' at the top of the shaft are made vertically movable to take up slack in the valve-controlling cables, and are preferably provided with means acting constantly thereon to maintain the cables taut. Such means may consist of springs, weights, or other equivalent devices tending to move the pulleys in a direction to keep taut the said Operating ropes, and the' pulleys may be 7o mounted in any suitable way to secure freedom of vertical movement therein. As a simple and convenient Construction for the purposes last referred to, said p ulleys are mounted on horizontally-arranged levers e e', which le- 7 5 Vers are 'fulcrumed between the ends upon stationary supports 6 6 and are provided with counterbalance-weights 6 9 acting to lift the ends of the levers in which the pulleys are mounted. g

F indicates a rock-shaft nounted horizontally upon the cap B and preferablyarranged beneath the bottom or floor of the cab. Attached to one end of said rock-shaft is a handlever F' which extends upwardly into the in- 8 5 terior of the cab in position convenient for the hand of the operator. Rigidly Secured to said shaft, at one side of the cab, is a horizontally-arranged lever Gr, which is Secured at its center to the shaft and carries at its opsite ends two grooved pulleys or rope-sheaves H I-I'.

I I' are two grooved pulleys or rope-sheaves mounted on the car adjacent to the pulleys ll I-I' and at one side of a straight line pass` 5 ing through the pivotal axes of said pulleys. Said pulleys I I' are nounted to rotate freely and independently of each other upon asuitable shaft or hearing, and are so located with relation to said pulleys I-I H' that the valve- IOO Operating ropes D D' may each pass around one of the pulleys I-I II' and then around one r devices are provided for supporting said pul leys I l' as being mounted at one side of a line passing through the axes of rotation of the movable sheaves H I-I", it being obvious that the same result will be obtained by placing the said sheaves I I' either above or below the said pulleys. As herein illustrated, the said sheaves I I' are mounted on the frame of the car above the pulleys H H', and

leys asfollows: J is a yoke or frame, in the upper part of which is rigidly secured a short shaft or pivot-pin j, on which the pulleys I I' are mounted and freely turn.

K is a rigid arm or bracket Secured to the frame of the car and extending outwardly therefrom and which affords pivotal support for the frame or yoke J, which is pivoted thereto in such manner that it may swing freely on a Vertical aXis. In the particular construction illustrated a pivot-pin k is inserted through the lower part of the frame or yoke J and through the bracket K to aft'ord such pivotal connection; but any other Construction adapted to form such pivotal connection may be used when desired.

The purpose ot' the pivotal connection described between the frame J and the bracket K is to enable the sheaves or pulleys I I' to adjust themselves at a proper angle or position relatively to the sheaves H H', so that the ropes D D' will run freely over the said sheaves. In the particularConstruction shown said sheaves H H' are arranged in the same plane with each. other, so that the sheaves I I' necessarily assume an inclined or oblique position to enable the ropes to passin a straight line from and to said sheaves, as clearly seen in Fig. 3. This Construction is not essential, however, inasmuch as the sheaves H H' may be arranged in different planes, in which case the sheaves I I' might be less inelined or located in planes parallel with the sheaves H H'. In any case, however, I prefer to pivotally support the sheaves I I', in order that they may aecurately adjust themselves to the position of the valve-actuating ropes. As a convenient and desirable Construction in the partis the bracket K is herein shown as cast integral with the bearing f, in which the adjacent end of the shaft F is supported.

While I have shown the valve-actuating ropes D' as extending from the valve-actuating lever U to the top of the shaft and then back again to the bottom of the same, yet this particular arrangement of the ropes is not essential, and' said ropes may be otherwise arranged without departing from the spirit of my invention.

I claim as my invention 1. The combination,with an elevator-car, of valve-controlling cables located within the shatt and attached at their ends to a valvecontrolling lever of a suitable motor, a horizontally-arranged oscillating lever mounted on the car, a sheave mounted upon each end of said lever, two sheaves pivotally located upon the car and constructed to freely rotate independently of each other, said sheaves being positioned at one side of a line passing through the sheaves on the oscillating lever, and means connected with the said oscillating lever for actuating said movable sheaves to take up one of said controlling-cables and to pay out the other, substantially as described.

2. The conbination', with the valve-con trolling cables of an elevator-car, of a horizontally-arranged oscillatory lever nounted upon the car and having a sheave at each end, two independently-rotatable sheaves located above said lever, and a pivoted or swiveled yoke or frame upon which said independently-rotatable sheaves are mounted, substantially as described.

In testimony that I clain the foregoing as ny invention I affix my signature in presence of two witnesses.

XVILLIAM H. HULTGREN:

l/Vitnesses:

C. CLARENCE PooLE, GEORGE W. HIGGINS, Jr.

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