Harvesters – Cutting – Hand-operated cutter
Patent
1990-02-21
1991-07-02
Neuder, William P.
Harvesters
Cutting
Hand-operated cutter
56255, 30276, A01D 3468
Patent
active
050275917
ABSTRACT:
Disclosed is a mowing apparatus, which includes a motive power source, first and second cutting wheels slidably superposed with each other and provided with a number of grass cutting edges, and mechanism for reciprocatively rotating each cutting wheel in opposite directions through a predetermined angle. The rotating mechanism includes a first shaft coupled to the first wheel, a cylindrical-shaped second shaft into which the first shaft is rotatably and coaxially inserted and coupled to the second wheel, and converting mechanism provided between the power source and the first and second shafts for converting the rotational motion from the power source into two oppositely and reciprocatively rotational motions of the first and second shaft within the predetermined angle. The rotational motion converting mechanism comprises a cam shaft rotatably driven by the motive power source, the cam shaft being provided in parallel with the first and second shafts, first and second eccentric cam plates which are eccentrically fixed to the cam shaft so as to be radially symmetrical with each other with respect to a central axis of the cam shaft, and first and second arms each having opposite ends, a concave portion being formed at one end thereof, and the other ends of the first and second arms being fixedly coupled to the first and second shafts, each concave portion of the first and second arms being adapted to receive each of the first and second cam plates, in such a manner that the first and second arms can be pivotably oscillated in mutually opposite directions to each other in accordance with the rotation of the first and second cam plates.
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Nakamura Masaharu
Wada Minoru
Komatsu Zenoah Company
Neuder William P.
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