Tractor equipped with working implements

Details Tractor equipped with working implements Tractor equipped with working implements

1989-08-16

1991-01-08

Coven, Edward M.

Earth working

Automatic power control

180247, 180338, 180345, 180900, A01B 4106

Patent

active

049827995

ABSTRACT:
A two-axle four-wheel tractor is equipped at its front and rear ends with working implements, individually, which are of the same type, opposite in working direction and shiftable between a working position and a nonworking position. The tractor has a steering system for steering the front and rear four wheels in the same direction through the same angle, a running transmission system for driving only the wheels positioned toward one of the working implements which is lifted to the nonworking position or, in a special case, a system for restraining the wheels positioned rearward with respect to the direction of advance of the tractor in a straight running position without permitting steering.

REFERENCES:
patent: 1090132 (1914-03-01), Buchanan
patent: 2927649 (1960-03-01), Poynor et al.
patent: 2964863 (1960-12-01), Shepherd
patent: 3810513 (1974-05-01), Spiller et al.
patent: 4043422 (1977-06-01), Barrett et al.
patent: 4700301 (1987-10-01), Dyke

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