Hand winch

Details Hand winch Hand winch

1974-08-19

1976-02-03

Sheridan, Robert G.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

B66D 104

Patent

active

039360334

ABSTRACT:
A hand winch for scaffolds including a pair of cable drums for separately winding a pair of cables used for simultaneously raising one end of a scaffold. A shaft carrying a spur gear is fixed to the winch frame and the cable drums are journalled on the fixed shaft. A planet gear carrier is secured to the cable drums and rotates therewith with one gear of each pair of planet gears meshing with the spur gear. A hand crank is journalled in the frame and on the fixed shaft and carries a member with an internal spur gear thereon which meshes with the other of the pair of planet gears so that the drive provides a 161/2 to 1 mechanical advantage.

REFERENCES:
patent: 1579483 (1926-04-01), Joyce
patent: 2417199 (1947-03-01), Hite
patent: 3799005 (1974-03-01), Koehler

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