Harvesters – Motorized harvester – With selective control of drive means
Patent
1989-06-08
1990-03-13
Bui, Thuy M.
Harvesters
Motorized harvester
With selective control of drive means
A01D 6910
Patent
active
049074016
ABSTRACT:
A transmission casing (3) having a wheel axle (6) extending leftwards and rightwards therefrom is supported by a machine frame (1) rotatably about the axle for providing a main clutch (9) which is engaged and disengaged by a selective tightening and loosening of an input belt (8) for the transmission casing as a result of a selective rotational displacement of the casing. An auxiliary clutch (10) is disposed within the casing and between a speed-change mechanism (7) and the axle. These clutches (9, 10) are normally kept disengaged by individual spring means (12, 13).
A rotatable clutch-control arm (11; 116) is provided which is operated by a clutch lever (14) so as to engage the auxiliary clutch (10). Upon completion of an engagement of this clutch, the control arm is engaged to a stop means (15) on the transmission casing such that further rotational displacement of this arm causes a rotational displacement of the casing towards a direction of engaging the main clutch (9).
The main and auxiliary clutches co-operate to lighten a speed-change operation and mower-moving operation by an operator. The main clutch is simple in structure and both of the clutches are operated by a single operating system.
REFERENCES:
patent: 4409779 (1983-10-01), Bent et al.
patent: 4416107 (1983-11-01), Hoff
patent: 4428180 (1984-01-01), Carlson
patent: 4466232 (1984-08-01), Beugelsdyk et al.
patent: 4503958 (1985-03-01), Nishio
Ishii Norihiro
Nemoto Shusuke
Shimizu Hiroaki
Bui Thuy M.
Kanzaki Kokyukoki Mfg. Co. Ltd.
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