B - Operations – Transporting – 66 – D
Patent
B - Operations, Transporting
66
D
254/100
B66D 1/00 (2006.01) B66D 1/16 (2006.01)
Patent
CA 1037460
WINCH DISCONNECT CONTROL ARRANGEMENT A B S T R A C T A construction vehicle, such as a track-type tractor, has a winch assembly mounted thereon for selectively paying-out cable from a cable drum thereof. A first hydraulic control for selectively rotating the cable drum comprises a pair of winch clutches adapted to brake the cable drum when both clutches are engaged, rotate the cable drum in. one direction when only one clutch. is engaged and rotate the cable drum in a second opposite direction when only the other one of the clutches is engaged. The above operations are responsive to movement of a single first handle mounted on an operator's station of the vehicles A second hydraulic control is operatively connected to a disconnect clutch, normally completing the drive input from the winch clutches to the cable drum. Upon movement of a second handle of the second hydraulic control to disengage the disconnect clutch, a retaining means automatically entraps the first handle to prevent movement thereof. Such entrapment insures engagement of the disconnect clutch by the second handle prior to movement of the first handle for winch clutch actuation purposes.
251483
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