Change-speed apparatus in a tractor

Details Change-speed apparatus in a tractor Change-speed apparatus in a tractor

1982-04-30

1985-07-16

Herrmann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74782, F16H 5710

Patent

active

045288720

ABSTRACT:
A change-speed apparatus in a tractor equipped with an engine has a planetary gearing mechanism settable between its two positions. Actuation of the mechanism to one of the two positions is hydraulically power-actuated, while actuation to the other of the two positions is automatically effected, as the hydraulic power is released, by a resiliently urging spring. Power-transmitting operative connection is therefore always maintained between the engine and running-drive wheels even when the hydraulic actuation power comes to extinct.

REFERENCES:
patent: 2115964 (1938-05-01), Osborne
patent: 2578308 (1951-12-01), Iavelli
patent: 2918832 (1959-12-01), Meyers
patent: 3487726 (1970-01-01), Burnett
patent: 3491863 (1970-01-01), Karlsson et al.
patent: 4282775 (1981-08-01), Van Dest
patent: 4387607 (1983-06-01), Sakakibara

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