Lifting mechanism with cam

Details Lifting mechanism with cam Lifting mechanism with cam

1978-09-13

1980-12-16

Stouffer, Richard T.

Earth working

With draft detail

Adjustable

172675, 74491, A01B 6304

Patent

active

042390869

ABSTRACT:
A relatively compact and lightweight planting and fertilizing apparatus is attached to a small garden tractor by a universal hitch which restricts lateral movement between the two. The apparatus is spring biased downwardly to assure firm contact with the ground, and can be raised above the ground by a single lever. The lever carries the biasing spring, and cams lifting bearings on the lever against a lifting plate on the apparatus. The fertilizer is fed by an axially adjustable feed gear rotated by a ground engaging wheel on the apparatus. The feed gear is biased by an adjusting spring against a threaded adjusting knob which sets the axial position of the feed gear.

REFERENCES:
patent: 1106879 (1914-08-01), Leischner
patent: 1797148 (1931-03-01), Jaggar
patent: 2139080 (1938-12-01), Heer
patent: 2764111 (1956-09-01), Collins
patent: 2787944 (1957-04-01), Meyer
patent: 2847232 (1958-08-01), Graham
patent: 3023717 (1962-03-01), Cline
patent: 3066622 (1962-12-01), Schurmann
patent: 3450074 (1969-06-01), Gatzke et al.
patent: 3708019 (1973-01-01), Ryan

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