Title: Hand winch

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.

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Other info:

Inventors: McElroy, Robert C. (Lisbon, OH, US)

Application Number: 498519
Filing Date: 1974-08-19
Publication_date: 1976-02-03
Assignee: Cable Climber Safety Devices Incorporated (Lisbon, OH)
Primary Class(es): 254/297
Other Classes:
US Patent Ref:

1579483	Apr, 1926	Joyce	254/186.
2417199	Mar, 1947	Hite	254/186.
3799005	Mar, 1974	Koehler	254/150.

Other Refs:
Primary Examiner: Sheridan, Robert G.
Assistant Examiner:
Attorney: Blair & Brown