US475834A - Elevator - Google Patents

Description

(No Model.)

ELEVATOB..

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ARTHUR P. WEBB, OF HOBOKEN, NEIV JERSEY.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 475,834, dated May 31, 1892.

Application tiled March 2, 1892. Serial No. 423,468. (No model.)

T0 all whom. it may concern:

Be it known that I, ARTHUR P. VEBB, of Hoboken, Hudson county, New Jersey, have invented an Improved Hoisting Mechanism for Elevators, of which the following is a specification.

This invention relates to an im proved hoisting mechanism for freight-elevators, and more particularly to means for intergearing the hoisting-drum either with a power-shaft or with a shaft revolved by a hand-wheel- Thus by a simple turn of a screw or the movement of a lever the elevator is changed from a powerelevator to a hand-elevator, or vice versa, which is a matter of great convenience to firms which have sometimes but little work and sometimes considerable work for. their elevators.

In the accompanying drawings, Figure lis a side View of my'improved hoisting mechanism; Fig. 2, a top View thereof; Fig. 3, a detail longitudinal section through box f, and Fig. 4 a similar section through box g.

The letter a represents the well of an elevator, across which there is hung the shaft b, carrying the usual hoisting-drum b. Around this drum there is wound the cable b2, that suspends the elevator cage or platform.

a2 is the usual counterbalanceweight box.

Upon the shaft b there is keyed a gearwheel b3, adapted to engage either one of a pair of smaller gear-wheels c c2. These wheels are connected to opposite ends of an arm c, pivoted at c3 to timber A and engaging the sliding bearings g le, hereinafter described. The upper gear-Wheel c is mounted upon the end of an intermediate shaft d, provided with pinion d', meshing into pinion'e of powershaft e.

Upon the shaft e are secured the usual fast and loose pulleys e2 for operating the machine by a suitable engine. The intermediate shaft d is so hung that it can oscillate to a slight extent around its outer end d2. To this effect the end d2 is received by a swiveled bearingf, pivoted to frame B by pin f. The bearing f is provided with the slots f2, engaged by bolts f3, which attach the bearing to the frame. The inner end cl3 of shaft d is received by a sliding bearing g, secured to the upper side of timber A. The bearing is slotted at g to engage the attaching-bolts g2. At one end the bearing g is provided with a lug g3, that receives one end of a hand-screw h, passing through the fixed nut h. In lieu of the screw 71 a hand-lever i (shown in dotted lines, Fig. l) may be employed. The lower gear-wheel c2 is mounted upon the end of shaft j, passing through the sliding bearing 7c, secured to lower side of timber A. The shaft j carries the grooved wheel j', around which passes the hand-rope jg. The outer end of shaft]l is hung in frame B, so as to be able to slightly oscillate around this end.

The operation of the mechanism will be readily understood. l/Vhen it is desired to run the elevator by power, the screw h is revolved to throw the wheel c into gear and the wheel c2 out of gear with the shaft l). Thus the power from the pulleys e2 will be properly transmitted to the hoisting-drum ZJ', while the hand-wheel is entirely out of action. Then it is desired to run the elevator by hand, the screw is revolved to throw the wheel c2 into gear and the wheel c out of gear with the shaft h. Thus the power from the hand-rope j2 will be properly transmitted to the hoisting-drum, while the power-shaft is entirely out of action. In this latter ease it will be observed that the power is transmitted directly from the shaft j to the shaft l) without employing the intermediate shaft d, and thus considerable hand-labor is saved. Whemlhowever, the elevator is run from the power-shaft e, the intermediate shaft is at once interposed to produce the proper transmission. It will be seen that a turn of the hand-screw in either direction will cause a movement of arm c, and also a corresponding movement of the sliding bearing and a small turn of the shafts d j around their outer ends. Thus all the parts Work harmoniously to shift the power-transmitting source. The power-shaft and the hand-shaft are in this machine entirely independent, so that when one revolves the other is disconnected and stands still.

l. The combination of hoisting-shaft h, carrying gear-wheel 115, with a power-shaft c, an intermediate vibrating shaft d, a vibrating hand-shaftj, a pair of gear-wheels c c, a con Heating-afm c, and an operatingscrew, suband-u1opeairig-screw,substagiitiaiiyasspecia stantally as specified. fied.

2. The combination of hoistinU-shafb b, cmj 3 D Ai I. NVE rylng gem-Wheel Z), With power-shaft e, 1n- 5 immediate Vibrating shaft cl, sliding bearing Witnesses:

g, vibrating hand-shai'tj, sliding bearing 7c, :L F. V. BRIESEN, pair of gear-Wheels c c2, a connecting-arm c, A. JONGHMANS.

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