Self propelled lawn mower

Details Self propelled lawn mower Self propelled lawn mower

1981-12-11

1984-02-07

Eskovitz, Jay N.

Harvesters

Gang

56 136, 56 158, 56 162, 56DIG22, A01D 3526

Patent

active

044295154

ABSTRACT:
The invention comprises an improved lawn mowing machine with a forward mounted mower deck including a plurality of rotary cutters. The blades or cutters rotate in opposite direction on opposite sides of the deck to bring the grass clippings to a deck mounted central vacuum. The mower blades are driven by a belt drive to eliminate expensive drive shafts and gearboxes. Applicant's 45.degree. twist belt drive geometry provides increased life to the belt over prior art 90.degree. twist belt drive geometries.
The mower deck includes novel side mower wings. A combined clutch and brake mechanism disengages the drive belt to the wing blade spindle and simultaneously brings the blade to a stop within one second when the wing is raised beyond its cutting range. The wing deck is attached to the mower central deck by a depressed hinge substantially close to the elevation of the mower blades. As the mower encounters uneven ground the separation of blade cutting paths is minimized in the movement of the wing blades relative to the central mower deck blades.

REFERENCES:
patent: 3500619 (1970-03-01), Bacon
patent: 3802172 (1974-04-01), Mathews
patent: 3834142 (1974-09-01), Johnston et al.

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