US816372A - Hoisting apparatus. - Google Patents

Description

w. BL POTTER.

HOISTING APPARATUS.. PrLroATzon FILED AUG. 1,1904.

PATBNTBD MAB. 27, ma.

2 SHEETS-SHEET l.

ACCL.

No. 816,372. PATENTED MAR. 27, 1906. w. B. POTTLR.v

'HOISTING APPARATUS. APPLIoATIoN FILED AUG. 1.1904.

2 SHEETS-SHEET 2.

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.Z2/7 ze WITNESSES z INVENTQR:

UNITE@ STATES PATENT WILLIAM B. Porras; or scrisnscranr, New rosa, AssIeNoR ro GEN- ERAL Erincrnrc conranr, A ceeronarion or New Yoan, y

l Specification of Letters Patent.

Patented March 2'?, 1906.

Application filed August 1, 1901i. Serial No. 218,98g.

To (1f/ZZ whom it may concern:

Be it known that I, WILLIAM B. POTTER, a

'citizen of the United States, residing at Schenectady, in vthe county of Schenectady and State of New York, have invented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification. t 1 Y My invention relates to hoisting apparatus, and more especially to the type ot' hoisting Vapparatus employed in connection ,with the ,during each operation or employ so` many manually-operated partsthat regulation of the driving means was impracticable, and as a consequence -electric motors when used as a` driving means have not proven so economical as in other places where they were not subjected to sudden and frequent reversals and were properly regulated.l

The object of the present invention is to lprovide al hoisting apparatus having its parts sol constructed and arranged that it may be propelled by a unidirectional driving means and its several operations and its speed readily and simultaneouslycontrolled and regulated by a single operator. f

-In carrying out my invention l provide separate drums forv the hoisting and operating cables, means controlled byasingle manually-operated part for causing one or both of the drums to engage or disengage the driving mechanism, and means for .braking one of the drums controlled by a second manuallyoperated part. The speed of the motorl is regulated either simultaneously withv the braking action by means of a direct connection with the brake-lever or independently l by means of a foot-lever.

The invention will be more readily under-` 5o apparatus embodying one 1form of my invention. Fig. is a longitudinal section through Y the main friction-gear and adjacent ends of the cable-drums. Fig.' 3 is a diagrammatic representation oi the'electrical connections of the motor, and Fig. 4 shows my hoisting device installed in an ordinary coal-pier.-

The device shown in the drawings comprises the main hoisting-drum 1 and the operating-.drum 2, mounted loosely upon a common shaft 3, carried in bearings 4, The drums 1 and 2 are Yeach'provided, at one end u with friction-surfaces 5 in the shape of a frustrated cone projecting from the faces 5 of the drums 1 and 2 is the frictiongear 7, having friction-surfaces 8 on itsopposite sides adapted to lcooperate with the surfaces 5. Between .the end ofthe hoistingdrum l and the gear 7 is a shoulderedsleeve 8 also feathered to theshaft 3, and-surrounded by a helical spring 9, engaging the side ofthe mg to normally .hold the hoisting-druml 1 pressed away from the gear 7, so that when the drum lis forced axially toward the gear 7 the .spring 9 acts at first to force the gear along the shaftl into 'engagement with the operating-drum 2 and then upon further travel of the hoisting-drum it yields to permit the druml and the gear? to frictionallyfengage,

The means formoving 'the hoisting-drum 1 toward the gear 7 consists of toggleflevers 1'0 10, pivoted to collars 11 11,.mounted loosely on the shaft 3. between the end 'of the hoisting-drum l and a collar 12, fixed to thel shaft, the operating-drum 2 being held from longitudinal movement by a corresponding fixedcollar 12', and the toggle-levers 10 10 are con-,

one arm of a bell-crank-13, which is connected by its other arm to a. lconne,cting-rodv 13, engaging a hand-lever 14, provided with a rack and detent. The means for frictionally braking' the'hoisting-drum 1 when the bucket'is in' raised from the outer lend of the hoisting-druml l and' surrounded by a brake-strap 16, contlanged head 6. Loosely feathered to they shaft 3 lbetween the opposedlriction-surgear and the shoulder of the sleeve and .act-v -nected at their common joint with a yoked' link 13, which connects at its lower end with positionv and for 'controlling they lowering thereoiv consists of a collar 15, projecting,

nected to a lbell-crank 17, actuated by a sec'- i .other end to a rack-rod 24, engaging the brakinCr o eration bv n'ieans 1 u b n n J plvoted at 23, and jointed at connecting-rod 19 of' the a Lo 25,- onf'the movable nie'inber of the yA foot-lever 26 is provided for ind control of the rheostet, the lever 22 o ng di yConnected et such times from the renie-r 'br-removal 0f the bolt 27' When thefdeviee above described is inn stalled 1n a coal-pier, es indieeted in Fig. Ll, an independent mechanism 2S is employed for running in and out oi' the bucket, Consistfreed rotates in areveY ing'ofa single drum operating upon a cable 2S?, which passes to a sh'eave 3U the end of a boom-runner 32 in the usual ins i., The bucket-operating Cable end the hoi zing-- Cable 34 pass from. their respective drums 2 and 1 to a shesve at the top of tlieniast Se down over sheaves 37, carried by the boom runner 32 to the bue/lie ts 38( The operation is substantially follows: Assuming the bucket to be open and resting upon the coal in the barge, the motor is excited by throwing brake-lever 18 forward or by pressing upon the foot-lever 2o, when lever 22 is disconnected, and friction-g being geared to the motor is et. once ser in 1notion. Lever 14 is then drawn back part vier' to bring;r 'the gear 'I into engagement w h the operating-drum 2, which is thereby ro* *ed to take up sutlieient length of cable te close the buelet 355. Then the lever 111 is drawn back still farther, causing the hoisting drurn 1 to overcome Vthe tension of the spring 9 and engage gear 7. Thereupon both drun'is are Caused to rotzlre in unison to hoist the bucket until it raised to the desired iq'ht. The lever 1S is then drawn beek to brake the hoisting-drum 1 and shut ofi the eurrent from the motor, the running-out druin having meanwhile been released to the bucket to travel into g yion aber-'e the hoppers 3Q, whereupon the lever 1% forward Vto release the operating end il i drums and 1 from the friction-gear 7 bucket being sustained by ineens or' brake 1S, while the operstingdrnin being 'D e direction, the bnelret 38 to open and dise hopper 39. The running-oi drinn 28 again actuated to drew Ytne becket out to position over the berge, where `t is rerinit-- ted 'to descend under control or ,en--

brake 1G.V i i ro be noted that the operations of raisn Asch-erging, lowering, and Closing the buelret are entirely controlled b v tivo levers 14 and 1.8 and the power of the unidirec- 1 rrr-titer eso requlated simultaneously therewith or, wllen ired, ,by a third lever 2513, so that a single o; irntion may control these several operations Without releasing any one lever in order 'to manipulate another.

While have shown .and described rny ini applied to partI nlsij kind of ,g apneratns, it is apparent that it is in no way restricted thereto nor to the devices shown und deseril'ied herein.

fi/l t l'. eliriin as new, and desire to secure 4, ers Patent of the United States, is 1. r lire eonibination of two druins, means 'ng seid drums, sind means Controlled by e single .lever for causing one or both. of seid drums to engage said driving nies-ns.

2. The combination of two drums, friction means for driving said drums, and ineens 4Controlled bv s single lever for causing one or both ol: said drums to irotionally engage said driving means.

3. The coin bin ation of two drums, friction rneans for driving said drums, means nornally operating to hold one of said drums n t of Contact with said driving means, sind a single means adapted to force one or both of seid drums into engagement with said driving means.

l1. The combination of a hoisting-drum and an operating-drum, friction ineens for driving' both of seid drums, ineens normally noting to hold said hoisting-drnin out of contact with said driving means, and a single nieens adapted on part movement to force the operetingwlrurn into engagement with the driving ineens and upon further nieveinent to force both drinne into engagement with said driving means.

5. The combination of a shaft supnorted at its e ds, two drums mounted on said shaft and provided with i'riotioneurliaees at their adjacent ends, Wheel provided with corresponding irietiowsurisees loosely feathered on seid shaft between said drums, a s ,ring loeeted between seid Wheel and one o said d .is to normally hold said Wheel out `of e nteet therewith end in Contact with the onor drinn, end e. thrust devioe for moving l ing-pressed drinn .into engagement with said Wheel.

The eonibination of' two drums, means or dr iving said drums, means controlled by le lever for Causing one or both of said o engagije said driving ineens, and a eviee ror IOO IOS

IIO

driving means, means operated by a single lei In Witness whereof I have hereunto set my ver adapted upon part movement to force l hand this 29th day of July, 1904. lthe operating-drum into engagement with l WLLTAM B POTTER said driving means and upon further move- 5 ment to Jforce the hoisting-drum into engage- Witnesses: ment with said driving means, and a brake i BENJAMIN B. HULL,

device engaging saidhoistng-drum. 'l HELENv ORF-OPT.

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