Harvesters – Motorized harvester – With selective control of drive means
Patent
1975-05-27
1977-07-19
Eskovitz, J.N.
Harvesters
Motorized harvester
With selective control of drive means
56 105, 56 115, 188166, A01D 7520
Patent
active
040359948
ABSTRACT:
Mounting and control apparatus for a driven element such as a lawn mower blade mounted coaxially on an engine drive shaft, in an arrangement in which, under control of a deadman lever, the driven element is normally de-clutched from the shaft and stopped by a brake, as when the driving engine is idled, and for operation is released by the brake and clutched by a centrifugal clutch to the drive shaft, as when the engine is speeded up. The compact nested assembly includes a driven drum element having an outer cylindrical brake and clutch drum and an inner bearing ring which lies within the axial length of the drum and is mounted on the outer race of a ball bearing carried by a reduced-diameter bearing sleeve on a main hub fixed to the motor shaft. A clutch carrier plate on the hub carries centrifugal shoes engageable with the inside of the drum and partially nested between it and the bearing ring. The hub carries a flywheel when the engine is designed to depend on the mower blade for flywheel mass. A protective bowl about the assembly forms a mounting platform for an arcuate brake-mounting plate which supports an elongated brake band about the drum. One band end straddles and is anchored to the plate; the other straddles the plate and is connected between a brake-applying spring anchored on the plate and a brake-release link connected to an eccentric pin on a crank wheel rotatable on the mounting plate.
REFERENCES:
patent: 2273328 (1942-02-01), Miller
patent: 2329881 (1943-09-01), Clapper
patent: 2803972 (1957-08-01), Leigh
patent: 2875858 (1959-03-01), Dunham
patent: 3026665 (1962-03-01), Hoff
patent: 3228177 (1966-01-01), Coates
patent: 3253391 (1966-05-01), Meldahl
patent: 3290871 (1966-12-01), Haas
Eskovitz J.N.
Hoffco Inc.
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