US579672A - Elevator - Google Patents

Description

(No Model.) I 2 Sheets-Sheet 1.

P. A. BATES & W. J. GREENHOUGH. ELEVATOR.

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F. A. BATE-S & WJJ. GRBENHOUGH.

ELEVATOR.

No. 579,672. Patented Mar.80,1897,

\Nitnesses.

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FRANCIS A. BATES AND WVILLIAM J. GREEN HOUGH, OF PHILADELPHIA,

PENNSYLVANIA, ASSIGNORS TO THE MORSE WILLIAMS & COMPANY OF PENNSYLVANIA.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 579,672, dated March 80, 1897.

A li atio fil d October 8, 1896. Serial No. 608,236. (No model.)

.To wZZ whom it may concern:

Be it known that we, FRANCIS A. BATEs and WILLIAM J. GREENHOUGH, of the city and county of Philadelphia and State of Pennsylvania, have invented an Improvement in Elevators, of which the following is a specification.

Our invention relates to elevators; and it consists of the improvements which are fully set forth in the following specification and are shown in the accompanying drawings.

More particularly our invention relates to the so-called controlling devices for controlling the operation of the hoistingmechanism from the moving car or cage.

It is the object of our invention to provide a controlling device for elevators which shall be certain and quick in its action, easy to operate, not liable to get out of order, and neat and compact in construction and appearance. In carrying out this part of our invention we employ a standing cable, or one which is anchored at its ends, passing in loops about pulleys carried in horizontallysliding bearings located on a horizontal portion of the framework outside of the car, by the reciprocal movement of which through suitable hand-operated devices on the car the loops of the cable may be varied and the cable moved to operate the valve or reversing mechanism of the hoisting-engine.

Our invention embraces certain improvements in the devices for shifting the movable pulleys by the hand-operated device on the car, whereby more certain action may be obtained and the mechanism will be more durable.

Our invention also includes certain improvements in the devices for operating the movable pulley or parts which act upon the control-cable, whereby they may be arranged compactly within the car, thus giving more shaft-space for the car, and may be protected from contact and concealed from view.

.We shall now refer to the accompanying drawings for the purpose of more particularly describing our invention.

Figure 1 is a vertical side elevation of an elevator embodying our invention. Fig. 2 is a perspective view of the control-cable, showing the loops thereof. Fig. 3 is an inverted plan view of the car, showing a portion of the control mechanism. Fig. 4 is a transverse vertical sectional view of the control mechanism within the car, and Fig. 5 is a vertical sectional view of the same 011 the line a a; of Fig. at.

A is the elevator-cage, which is raised and lowered in the shaft by any suitable hoisting devices. (Not shown.)

B is thevalve mechanism, by which the operation of the hoisting apparatus is controlled in the usual manner. We have shown the valve device of a hydraulic engine operated by a pulley Z), but it is to be understood that our invention may be applied to any form of hoisting apparatus.

C is the control-cable, by which the valve mechanism is operated through the pulley b.

D D and D D are pairs of pulleys carried in stationary bearings, such as the brackets d upon the car A, and are arranged on a horizontal portion of the framework outside of the car, preferably under the platform, as shown.

E E are pulleys carried in movable bearings arranged adjacent to the pairs of pulleys D D and D D. These pulleys E E are preferably journaled in slide-frames 6, carried on slides F, carried by brackets f. Each pulleyframe 6 is free to slide on its guide F to and from the corresponding fixed pulleys D D and D D.

The control-cable O is anchored at its two ends 0 at one end of the elevator-shaft and passes about guide-pulleys G G at the other end of the shaft and forms a loop 0 about the valve-operating pulley b. Each strand of the cable 0 passes in a loop about one pair of the pulleys D D and E E. As shown in the drawings, the cable 0 is attached at one end to the top of the shaft at 0, passes down and under one fixed pulley D, then about the movable pulley E, over the other fixed pulley D, and down to one guide-pulley G, whence it passes inaloop 0 about the pulley b. From there it passes up over the fixed pulley D, around the movable pulley E,under the other fixed pulley D, and up to the top of the shaft, where it is fixed at c. The cable 0 thus has IOO two loops 0 0 one about the pulleys D D E and the other about the pulleys D D E.

It is apparent that by the reciprocalmovement of the pulleys E and E the loops c 0 may be relatively shortened and lengthened, thus moving the cable C about the pulley Z) in either direction and operating the valve B or mechanism for controlling the hoisting devices.

\Ve have shown the ends of the cable 0 attached at the top of the shaft to the usual tension take-up orcompensatingdevice II to hold the cable taut and compensate for variations in length due to atmospheric and other causes.

\Ve shall now describe the devices for operating the movable pulleys E E.

It has been usual to arrange the sprocketwheel or other power-transmitting connections between the hand wheel or lever in the ear and the pulleys or levers which move the control-cable on the outside of the car, but thisis objectionable, because it occupies more or less shaft-space, and in cases where the shaft-space is limited necessitates the use of a smaller car, and because it leaves these parts exposed to injury or disarrangement. \Ve arrange these devices entirely within the car, and inclose them within a casing which hides them from contact. By arranging the pulleys which operate the cable outside of the framework and locating the power-transmitting connections between them and the hand-lever within the car all of these operative parts are hidden from view and are well protected. The inclosing casing may be easily removed to permit access to the powertransmitting connections for the purpose of cleaning or making repairs or adjustments.

I I are two guide-pulleys in fixed hearings in line with the movable pulleys E E.

J is a pulley, preferably in the form of a chain-wheel, carried by the car and operated by a suitable lever or handle.

K is a chain passing about the chain-wheel J and down about the guide-pulleys I I and having each end attached directly to one of the movable frames 6.

It is apparent that when the chainavheel J is turned and the chain moved the frames 6 6 will be moved reciprocally upon the slides F and that the pulleys E IE will be moved to and from the fixed pulleys D and D, thus lengthening one of the loops 6 c of the cable and shortening the other, so that the movement of the pulley b will be effected.

Lisagear-whcel connected with the chainwheel J.

M is a pinion engaging the gear-wheel L and mounted on a stud m, which carries the hand wheel or lever N. The chain-wheel J is operated from the hand wheel or lever N through the pinion M and gear-wheel L.

O is an upright hollow casing within the car in which the pinion M, gear-wheel L, and its chain-wheel L are journaled and within which the chain K, which passes down through openings in the framework, is contained.

A great advantage of usingapinion on the shaft of the hand-wheel operating a gearwheel connected with the chain-wheel, instead of mounting the hand-wheel direetlyon the shaft of the chain-wheel, is that slower and more gradual movements will be i1nparted to the chain-wheel and controlling devices, and the sudden jarring movement of the control devices will be avoided. The car will not be jarred in stopping or starting.

The details of construction shown may be varied without departing from our invention.

\Vhat we claim as new, and desire to secure by Letters Patent, is as follows:

1. In an elevator, the combination of the car, a standing control-cable, fixed pulleys on the car about which the cable passes, pulleys about which the control-cable passes in loops located on the car on horizontally-movable hearings, a hand-operated device on the car, and power-transmittin g connections between the hand-operated device and the movable bearings, whereby the said bearings may be moved horizontally to move the pulleys carried by them and operate the control-cable.

2. In an elevator, the combination of the car, the control-cable, devices located on a horizontal portion of the framework outside of the car for moving the control-cable, a hand-operated device within the car, powertransmitting connections between the handoperated device and the devices located outside of the car for moving the control-cable, located within the car, and an inclosing case 0 covering said power-transmitting connections.

3. In an elevator the combination of the car, the control-cable, devices located on a horizontal portion of the framework outside of the car for moving the control-cable, ahollow casing 0 located within the car, a hand operated device carried by the casing O, and power-transmitting connections between the hand-operated device and the devices located outside of the car, contained within the easing 0 and extending through the framework of the car.

4. In an elevator, the combination of the car, the control-cable, devices located on a horizontal portion of the framework outside of the car for moving the control-cable, a hollow casing 0 located within the car, a gearwheel journaled within the casing O, a chainwheel carried by the gear-wheel, a chain contained within the casing, passing about the chain-wheel extending through a horizontal portion of the framework of the car and connected directly with the devices on the outside thereof for moving the control-cable, a hand-operated device journaled in the casing O and a pinion within the casing carried by the hand-operating device and engaging the geanwheel.

5. I11 an elevator, the combination of the ear, the control-cable, pulleys D, D, carried by the car in stationarybearings about which the control-cable passes, horizontal guides F,

F, on the car, slide-frames e, 6, carried by the guides F, F, pulleys E, E, carried by the slide-frames e, 6, about which the cable passes in loops, a hand-operated device Within the car and power-transmitting connections be tween the hand-operated device and the slides e, 6, whereby the slides e, e, and their pulleys E, E, may be moved to effect the movement of the control-cable.

6. In an elevator, the combination of the car, the control-cable, pulleys D, D, carried by the car in station ary bearings about which the control-cable passes, horizontal guides F, F, on the car, slide-frames e, 6, carried by the guides F,-F, pulleys E, E, carried by the FRANCIS A. BATES. WILLIAM J. GREENHOUGH.

WVitnesses:

GODFREY R. REBMANN, THEo. O. IVES.

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