Earth working – With actuator adapted to lift tool for transport on wheeled... – With separate latch
Patent
1973-11-30
1976-05-18
Burr, Edgar S.
Earth working
With actuator adapted to lift tool for transport on wheeled...
With separate latch
172304, 172469, 292 61, 403325, A01B 6310, A01B 63104, A01B 63118, E05C 500
Patent
active
039571238
ABSTRACT:
A vehicle mounted lift assembly having latch mechanisms for latching pivoted lift arms in an uplift position whereby an implement, particularly a powered rotary mower, connected to the lift arms can be automatically latched in an elevated position while other implements are being raised or lowered by the lift assembly. The latch mechanisms each include a pivotal and an axially translatable bolt having a non-circular end portion which is slidably received in a complementary non-circular opening when in an arm latching position. The bolt is manually movable to an unlatched position with the non-circular portion moved axially out of engagement with the non-circular opening, and with the bolt then being pivoted about its axis to preclude registration of the non-circular portion with the non-circular opening. A combination torsion-compression spring is prestressed to normally exert a compressive force tending to hold the bolt in latching position, and to normally exert a torsional force tending to pivot and maintain the bolt in its unlatched position. A cam face on the latch bolt automatically locks the associated lift arm in raised position in response to movement of the lift arm into its raised position only if the bolt has been pivoted to its latching position.
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Bratlie Steven A.
Burr Edgar S.
FMC Corporation
Lesniak A. M.
Tripp C. E.
LandOfFree
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