Chain lever hoist

Details Chain lever hoist Chain lever hoist

1995-05-03

1997-06-24

Stodola, Daniel P.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

254368, 254372, 192 7022, 192111B, 192 95, B66D 114

Patent

active

056411510

ABSTRACT:
The free-running operation of a load sheave of a chain lever hoist is assured by an assist mechanism that keeps the relative position between a hub and a spindle of the hoist at a brake inactive position, when the screwing control position of the hub relative to the spindle has been shifted from a winding operation position to a free-running operation position. operator can easily switch the hoist to the free-running operation made by slightly turning a hub knob and a spindle knob by hand. Such an operation eliminates steps such as holding the chain by hand, or turning the spindle while the hoist lever is engaged with the hub. The above operation frees an operator from getting his hands dirty with the chain, and permits an immediate switching to the free-running operation. The use of indicators allows the operator to recognize the free-running operation setting at a glance.

REFERENCES:
patent: 2735528 (1956-02-01), Dodge
patent: 3520392 (1970-07-01), Deremo et al.
patent: 4469308 (1984-09-01), Nakamura et al.
patent: 4775040 (1988-10-01), Telford

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