Implements or apparatus for applying pushing or pulling force – Step-by-step traveling bar – Pawl actuated
Patent
1976-08-09
1978-04-11
Hoffman, Drayton E.
Implements or apparatus for applying pushing or pulling force
Step-by-step traveling bar
Pawl actuated
188 827, 192 12B, B66D 100
Patent
active
040835340
ABSTRACT:
A low noise, self-locking winch with a cylindrical cable drum having a cable wound around its periphery. The drum is rotated by a drive wheel which is fixedly mounted on a drive shaft. A latch wheel, having a smooth outer periphery, is slidably mounted on the drive shaft adjacent the drive wheel with a layer of frictional braking material positioned therebetween such that axial pressure on the latch wheel with respect to the drive shaft causes the latch and drive wheels to rotate as a unit. A crank is threaded onto the end of the drive shaft adjacent the latch wheel so that rotation of the crank in a winding direction forces the latch wheel against the drive wheel to rotate the cable drum. A pivotally mounted latch lever is resiliently biased against the smooth outer periphery of the latch wheel in a manner that causes the latch lever to cam against the latch wheel as the drum rotates in an unwinding direction thereby locking the winch. Cable is unwound from the drum by rotating the handle to release the pressure of the latch wheel against the drive wheel thereby allowing the drive wheel to rotate free of the stationary latch wheel.
REFERENCES:
patent: 1482302 (1924-01-01), Hescock
patent: 1482924 (1924-02-01), Hescock
patent: 2551309 (1951-05-01), Allison
patent: 3237732 (1966-01-01), Hayes
patent: 3281043 (1966-10-01), Plumb
patent: 3288254 (1966-11-01), Replogle
patent: 3809196 (1974-05-01), Moribe
Genie Industries Inc.
Hoffman Drayton E.
Underwood Donald W.
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