Nonhazardous mower

Details Nonhazardous mower Nonhazardous mower

1985-12-30

1988-01-19

Peshock, Robert

Harvesters

Cutting

Cutter members

56249, A01O 3442

Patent

active

047197439

ABSTRACT:
A lawn mower having a transverse cutting bar and a rotary cutter assembly fitted with a plurality of curved cutting edges that maintain substantially constant contact with the transverse cutting bar and reciprocate along the cutting bar to provide a shearing action for lawn mowing purposes. In the presently preferred embodiment of the lawn mower, the cutting edges are the edges of a plurality of generally elliptical blades mounted on a central shaft, the blades each having a longitudinal midsecton disposed at an angle of about 30.degree. with the axis of the shaft so as to wobble along the transverse cutting bar as the cutter assembly rotates. The blades reciprocate along a portion of the length of the transverse cutting bar with their ranges of reciprocation overlapping to result in a smooth cutting swath. Each of the blades has cutting edges of generally S-shaped side profile, and is formed with symmetrical outturned flanges on each longitudinal half of such character as to insure substantially 90.degree. contact between that blade and the transverse cutting bar throughout the full range of that contact.

REFERENCES:
patent: 2533691 (1950-12-01), Renonte
patent: 2772533 (1956-12-01), Shibley
patent: 3029583 (1962-04-01), Patt
patent: 3054247 (1962-09-01), Roester
patent: 4267690 (1981-05-01), Pike et al.
patent: 4563867 (1986-01-01), Bokon

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