Self-locking windlass

Details Self-locking windlass Self-locking windlass

1978-02-10

1979-01-02

Blix, Trygve M.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

242 96, 24 68R, B66D 100

Patent

active

041323890

ABSTRACT:
A self-locking windlass for preventing unwinding of the windlass under load when the force turning the windlass is released. The windlass comprises an eccentric spindle coupled to a shaft and rotatable therewith. A cable has one end secured to the spindle and its opposite end securable to the load. Upon rotation of the shaft and spindle, the cable is wound on the spindle pulling the load toward the windlass. Due to the eccentric spindle, a self-locking position of the windlass is attained during each revolution of the shaft and spindle. In this locking position, the load is incapable of unwinding the cable when the force rotating the shaft and spindle is released. This locking position is attained when the spindle is substantially between the shaft and load and the load force is directed toward the load along a line that is substantially tangent to the spindle and passes through the shaft.

REFERENCES:
patent: 75869 (1868-03-01), Curley
patent: 3746309 (1973-07-01), Johnson
patent: 3985341 (1976-10-01), Akre

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