Tractor power-takeoff engagement limit

Details Tractor power-takeoff engagement limit Tractor power-takeoff engagement limit

G - Physics

05

G

142/4

G05G 5/08 (2006.01) B60K 17/28 (2006.01) B62D 53/02 (2006.01) F16H 61/16 (2006.01)

Patent

CA 2020959

An interlock mechanism for use on a tractor to limit the engagement of the tractor power--takeoff only when the tractor engine is running at or below a predetermined speed of operation is disclosed wherein an interlock clip interconnects the control levers for the engine throttle and the power-takeoff engagement control such that the power-takeoff control lever is locked against moving into an on position whenever the throttle control lever has been moved to a predetermined position. The clip includes a first member having a cam surface thereon engageable with the throttle control lever and a second member movable into the path of movement of the PTO control lever whenever the first member is moved into a lockout position by the throttle control lever. The clip also includes a spring to permit yielding movement of the first and second members under conditions where the PTO control lever is moved into the on position and the throttle is subsequently moved into the predetermined position.

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