A - Human Necessities – 01 – D
Patent
A - Human Necessities
01
D
56/62
A01D 50/00 (1980.01)
Patent
CA 1112461
MOWING ROTOR Abstract A flail-type mowing rotor, spinning about a horizontal axis transverse to its path of travel, has specially configured, swingable cutters that provide finish-cut quality notwithstanding design features that minimize the number of cutters required on the rotor, allow them to be fabricated from stamped, relatively light-gauge metal, and promote quick and easy removal and replacement of cutters as may be necessary or desirable. Each of the cutters comprises a pair of back-to-back, generally L-shaped blades having a medially dis- posed, obliquely oriented offsetting portion that locates the transverse cutting edge in offset relationship to the plane of the flat mounting portion of the blade. Thus, when the blades are disposed back-to-back on the rotor, the transverse cutting edge formed by the two cooperating blades is interrupted at its midpoint to present a gap through which uncut grass may pass as the rotor spins, thereby wiping the cutter clean and eliminating grass wrap. Arranging the cutters in a helical series about and along the hub of the rotor causes the cutting edge of one cutter in the series to overlap the gap of the next adjacent cutter in the series, thereby assuring a complete cut. Formed contours on each blade provide a bottom cutting and bottom sharpening design as well as induce a grass-lifting airflow tending to encourage the grass to stand upright for complete severance, and the mounting hardware for the cutters is such that the back-to-back relationship of the blades of each cutter is maintained without sacrificing the ability of the cutters to yield instantaneously in a retrograde swinging motion upon striking solid obstructions.
362836
Gowling Lafleur Henderson Llp
Hesston Corporation
LandOfFree
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