Harvesters – Motorized harvester – With selective control of drive means
Patent
1974-09-20
1976-04-06
Mancene, Louis G.
Harvesters
Motorized harvester
With selective control of drive means
56 107, 318293, A01D 7514
Patent
active
039480240
ABSTRACT:
An electric motor-powered linkage is provided for raising and lowering an implement mounted on a lawn and garden tractor. The energization of the motor and preselection of the position to which it is desired that the motor move the implement is accomplished through means of a control system including a pair of side-by-side arms pivotally mounted for swinging movement about a common axis. On one arm is mounted first and second normally open control switches forming part of a control circuit connected to a motor-reversing power circuit, and on the other arm is mounted a cam forming part of a follow-up linkage. To selectively actuate the motor to drive in forward and reverse, the arm on which the control switches are mounted is selectively manually swung in opposite first and second directions to cause the first and second switches to be respectively actuated to closed positions by first and second arcuate surfaces of the cam. The follow-up linkage acts in response to motor actuation to return the cam to a position wherein the surfaces thereof permit whichever one of the switches is actuated to return to its normally open position to thus de-energize the motor. The cam surfaces are elongated in the direction of movement of the switches so that the distance through which the motor must move the implement in order to effect deenergization of the motor may be preselected by the amount that the switch carrying arm is manually displaced.
REFERENCES:
patent: 2922929 (1960-01-01), Cooper et al.
patent: 3305718 (1967-02-01), Waldron
patent: 3396519 (1968-08-01), Lehman
Allen David Thomas
Behrens Robert Nick
Deere & Company
Eskovitz J. N.
Mancene Louis G.
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