Safety interlock mechanism for corn head assembly

Details Safety interlock mechanism for corn head assembly Safety interlock mechanism for corn head assembly

1983-09-09

1986-01-28

Wilson, John J.

Harvesters

Motorized harvester

With condition-responsive operation

56 98, 56DIG15, 474115, 474117, 198856, A01D 4502

Patent

active

045662568

ABSTRACT:
A safety interlock system for mounting on the support assembly of a row-crop harvester is provided to protect against damage from a loose or broken gathering member being drawn into the chopper of the harvester. Specifically, the system includes a guide sprocket mounted on an idler arm that is urged by spring means to tension the gathering member. If the gathering member is loose or breaks, the idler arm swings forward under the force of the spring. A linkage, connected to the idler arm, moves in response thereto and interacts with a finger lever to activate a switch. Activation of the switch energizes an interrupter means, such as an electronic clutch, that interrupts the drive to the gathering member. The switch is protected from damage, dirt and debris by being mounted away from the gathering member within a compartment in the support assembly.

REFERENCES:
patent: 2230745 (1941-02-01), Eiselstein
patent: 3680685 (1972-08-01), Halton
patent: 3905473 (1975-09-01), Jones et al.
patent: 4106270 (1978-08-01), Weigand et al.
patent: 4199924 (1980-04-01), Eistert et al.
patent: 4335565 (1982-06-01), Knepper et al.

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