Tilling machine with pivotal bi-directional operative tines

Details Tilling machine with pivotal bi-directional operative tines Tilling machine with pivotal bi-directional operative tines

1985-01-31

1987-11-17

Johnson, Richard J.

Earth working

With drive means for tool or cleaner

Guided by walking attendant

172 91, 172545, 172556, A01B 3314

Patent

active

047067616

ABSTRACT:
A tine assembly for use with a rotary tiller comprising a selectively rotatable tine shaft and a plurality of pivotally mounted tines. The tines each include stop surfaces associated with an innermost end of the tine whereby the tine pivots to one position when the tine shaft is rotated in a clockwise direction and automatically pivots to a second position when the tine shaft is rotated in a counterclockwise direction. The angle of pivot between the two positions is such that the leading edge of the ground engaging portion of the tine sweeps a larger radius than the following portion of the tine when the tine shaft is rotated in either the clockwise or counterclockwise directions.

REFERENCES:
patent: 1450173 (1923-04-01), Frickey
patent: 1802711 (1931-04-01), Fitts
patent: 2325997 (1943-08-01), Kelly et al.
patent: 3087555 (1963-04-01), Lester
patent: 3151685 (1964-10-01), Field
patent: 4492271 (1985-01-01), Doering
patent: 4556113 (1985-12-01), Saito et al.
patent: 4611669 (1986-09-01), Ballard
patent: 4615395 (1986-10-01), Nagamine

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