Harvesters – Cutting – Cutter members
Patent
1981-08-03
1983-10-18
Hirsch, Paul J.
Harvesters
Cutting
Cutter members
56400, A01D 5518
Patent
active
044097816
ABSTRACT:
A thatching tool for a rotary lawn mower is provided. The tool includes a rotatable supporting bar to be rotated by a motor of the mower with the bar having thatching teeth mounted at both ends. Each of the thatching teeth includes a horizontal coil portion having an attaching portion at one end and a ground-engaging portion of tooth member at the other end. The tooth member extends at an angle of 130.degree.-160.degree., and preferably 140.degree.-150.degree., to the direction of rotation. The end of the tooth member is bent downwardly substantially perpendicular to the ground, with the length of the bent portion being from one-tenth to one-third, and preferably one-sixth to one-fourth, of the overall length of the tooth member, including the bent portion. This configuration provides greater resiliency for the tooth and prevents undue digging into the ground. The tooth also has a weakened portion which is designed to break first if the tooth fatigues and is positioned to prevent the broken portion of the tooth from being thrown outwardly and possibly causing injury.
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Arnold Industries, Inc.
Gutchess, Jr. Allen D.
Hirsch Paul J.
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