HAND-OPERATED RATCHET WINCH Russian patent published in 1995 - IPC

FIELD: hoisting devices. SUBSTANCE: winch has drive lever engaged through spring-loaded drive pawl 10 with ratchet wheel. Spring-loaded stop pawl 15 is engageable with the same ratchet wheel. Winch is provided with means for alternatively disengage pawls 10 and 15 with ratchet wheel when lowering the load. Rope drum is linked with ratchet wheel. Each of the above disengaging means includes base 16 for interaction with respective pawl, pusher 14 for interaction with base 16 and rest 11 for interaction with lever 12. Bases of disengagement means are positioned at an angle, which is larger than the angle of stroke of lever 12 in hoisting the load. EFFECT: improved efficiency. 9 dwg