Ratchet pulley for tightening cords or ropes

Details Ratchet pulley for tightening cords or ropes Ratchet pulley for tightening cords or ropes

1993-01-04

1994-11-29

Stodola, Daniel P.

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

254411, 254223, 254217, B66D 308, B25B 2500

Patent

active

053682815

ABSTRACT:
A ratchet-type tensioning mechanism for a rope or cord has a rotatable sheave with faces having radially extending serrations. A releasable ratchet mechanism permits rotation of the sheave in one direction but not the other. A plurality of serrations circumscribes the sheave, which is closely fitted within a curved surface within a housing within which the sheave is rotatably mounted. The curved surface forces the rope into the sheave and maintains it in non-slippiong contact therewith. An opening in the side of the housing can be provided to permit hand rotation of the sheave. The device optionally may include a ratcheting lever arm which engages the wheel and affords leveraged tensioning the rope.

REFERENCES:
patent: 1185179 (1916-05-01), Chattaway
patent: 1636273 (1927-09-01), Baker
patent: 2967046 (1961-01-01), Ratcliff
patent: 3302932 (1967-02-01), Wallin
patent: 3946989 (1976-03-01), Tsuda
patent: 4151980 (1979-05-01), Burton et al.
patent: 4542883 (1985-09-01), Rutzki
patent: 4580766 (1986-04-01), Woodgate
patent: 4603839 (1986-08-01), Ekman et al.

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