US1277712A

US1277712A - Hoisting mechanism.

Info

Publication number: US1277712A
Application number: US80259613A
Authority: US
Inventors: Henry Shelden Germond Jr
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-11-24
Filing date: 1913-11-24
Publication date: 1918-09-03
Anticipated expiration: 1935-09-03

Description

H.. S. GERIVIOND, in.

HOISTING MECHANISM. APPLICATION FILED NQVJ. I9I3.

1 ,277,7 1 2 Patented Sept. 3, 191.8.

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shaft if; (or the brake-shaft r, as the case may be) and place it upon the brake-releasing shaft 5. The workman next turns the latter shaft so asto swing the free end of the brake-band-controlling lever 4 downwardly against the tension produced in the tie-rope 3 by the weight of the platform g andits load. In this way the slight'movement necessary to loosen the brake-band w is produced; and the brake-band being loosened, .the brake-disk s; the pawlcarrier i: andthe brake-shaft 1 will krotate together in a retrograde or backward direction, thereby allowing the platform g and its load to descend. The control thus obtained is perfect and the lowering of the platform is made swift and certain; and, at the same time; the workman is safeguarded from injury due to the backward throw of th crank-handle j.

I claim: f y 1. A hoisting mechanism comprising loadn supporting means; a brake mechanism; au-

tomatically-acting devices through which y theweight of the load controls said brake mechanism; means for releasing said brake mechanism; and an operating device adapted to control alternatively both said means.

2. A hoisting mechanism comprising load# r supporting means; windlass mechanism con- -ternatively trolling the same; a brake for said mecha nism; automatically-acting devices through which the weight of the load controls saidv brake; means for releasing said brake; and an operating member adapted to control alsaid load-supporting means and brake-releasing means.

3. A hoisting mechanism comprising a load-supporting cable; `a load-raising wind lass mechanism upon which said cable is wound to raise the load and from which said cable is paid out to lower the load; a brake mechanism Vwhich while set permits said windlass to be freely operated to wind up said cable and raise the load but which prevents said vcable from being paid out to lower the load; devices by which said cable and its load are supported and said vbrake mechanism is held in set position by the load during the raising thereof; and means by which said brake mechanism is in opposi# tion to the weight'of the load released from the action thereof and said windlass mechanism is freed to pay out said cable.

4L; A hoisting mechanism comprising a load-supporting cable; aload-raising windlass mechanism `upon which said cable is wound to raise the load and from which said cable is paid out to lower the load; a bra-kedisk idly mounted on said windlass mechanism; a brake-strap forA said brake-disk; means by which said windlass mechanism is interlocked with said brake-disk; devices by which said cable and its load are supported and said brake-strap is held in set position by the load during the raising thereof; and means by which said brake strap is in opposition to the weight of the load released from the action thereof and said windlass mechanism is freed to pay out said cable.

5. A hoisting mechanism comprising a load-supporting cable; a load-raising windlass mechanism upon which said cable is wound to raise the load and from which said cable is paid out to lower the load; a brake mechanism which while set permits said windlass mechanism to befreely operated to wind up said cable and raise the load but which prevents said cable from being paid out to lower the load; a pulley over which said cable is rove; a lever from which said pulley is suspended; an arm which is mountedfree to swing and which sets and releases said brake mechanism; a connecting device by which the weight of the load is transmitted from said lever to said arm to set said brake mechanism automatically; and means by which said arm is swung in opposition to the weight of the load to release said brake mechanism from the action thereof and permit said windlass mechanism to pay out said cable and lower the load.

6. A hoisting mechanism comprising a winding shaft; a brake-disk idly mounted strap for said brake-disk; a load-supportingpulley; a swinging arm from which said brake-strap and pulley are hung; and means for throwing said arm in opposition to the weight ofthe load to release said brakestrap and permit said winding shaft to lower the load.

7. A hoisting mechanism comprising a winding shaft; a brake-disk idly mounted thereon; a' pawl carried bysaid shaft and arranged to engage said brake-disk; a brakestrap for said brake-disk; a load-supporting pulley; an arm from which said brake-strap and pulley are hung; a shaft for .controlling said arm; and an operating device shaped to engage and turn each of said shafts alternatively.

Signed at Jersey City, in the county of rHudson and State of New Jersey, this nineteenth day of November, A. D. 1913, in the presence of the two undersigned witnesses.

HENRY SHELDEN GERMOND, JR.

Witnesses l WILLIAM EBOEHCK, W.- C. COLLINS.

Copies ofthis patent :maybe obtained fior ve cents each; by addressing the Commissioner of Batenta, Washington, D. G."