Woodworking – Special-work machine
Patent
1989-06-22
1990-02-13
Bray, W. Donald
Woodworking
Special-work machine
144343, A01G 2300, B27L 100
Patent
active
048997943
ABSTRACT:
Improved pivotal support means is provided for supporting the rectangular support frame of the self-aligning cutter head assembly for pivotal movement in both the vertical and horizontal planes. The improved pivotal support insures that the limb stripping blades and the guide means carried by the rectangular support frame are maintained in parallel alignment with the longitudinal axis of the tree trunk as the tree trunk is being pulled through the tree delimbing device. The rectangular support frame is supported for pivotal movement in the vertical plane and in a cradled relationship on the upper ends of the vertical legs of a support yoke extending beneath the rectangular support frame. The rectangular support frame is supported for movement in the horizontal plane by a pivot extending through the horizontal medial portion of the yoke member and beneath the rectangular support frame.
REFERENCES:
patent: 3572410 (1971-03-01), McElderry
patent: 4034785 (1977-07-01), Tucek
patent: 4049032 (1977-09-01), Oldenburg et al.
patent: 4124047 (1978-11-01), Dressler et al.
patent: 4742854 (1988-05-01), Forslund
patent: 4749012 (1988-06-01), Hamby, Jr.
patent: 4766939 (1988-08-01), Forslund
patent: 4815506 (1989-03-01), Kainz
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