Power transmission device for a power-operated lawn mower

Details Power transmission device for a power-operated lawn mower Power transmission device for a power-operated lawn mower

1978-05-30

1980-07-22

Zugel, Francis K.

Harvesters

Motorized harvester

With selective control of drive means

192 11, A01D 6908

Patent

active

042132886

ABSTRACT:
A power transmission device for a power-operated lawn mower of a type, in which a driving pulley and a driven pulley are respectively fitted fixedly and rotatably on a power output shaft of a prime mover such as an internal combustion engine, an electric motor, and so forth, another driven pulley is rotatably fitted on a separate shaft disposed in parallel with the output shaft, a cutting blade is fastened to the first-mentioned driven pulley rotatably fitted on the output shaft as an integral part thereof, a first drive belt is loosely extended between the driving pulley and the second-mentioned driven pulley, a second drive belt is tightly extended between the first and second-mentioned driven pulleys, a tension pulley is further provided on a swingable supporting arm to impart tension to the loosely extended belt when the cutting blade is to be rotated for lawn mowing, and a brake applying implement is provided on one part of the swingable supporting arm to apply frictional braking force to the second-mentioned driven pulley when the cutting blade is to be stopped. The tension-imparting and brake-applying operations to the loosely extended drive belt and the second driven pulley, respectively, are effected by an operator through gripping and releasing of a control lever provided at a position of a handle connected to the swingable supporting arm by a cord or wire.

REFERENCES:
patent: 3367459 (1968-02-01), Rubin
patent: 3543892 (1970-12-01), De Baillie
patent: 4058957 (1977-11-01), Roseberry
patent: 4117651 (1978-10-01), Martin

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