Woodworking – Special-work machine – Combined
Patent
1975-03-20
1976-06-01
Simpson, Othell M.
Woodworking
Special-work machine
Combined
144 2Z, 144309AC, A01G 2308
Patent
active
039601897
ABSTRACT:
An improved method of processing a sheared tree is provided, utilizing an improved processing apparatus. The trunk of the tree is held, by a holding means, adjacent its butt end and the tree trunk is positioned lengthwise of the boom member of the apparatus. A first portion of the tree trunk is delimbed by moving a carriage, including a first delimbing means, along the trunk from the butt end to a first predetermined point. The carriage includes a gripping means which grips the trunk at a first gripping point intermediate the butt end and the first predetermined point. The hold on the tree trunk adjacent the butt end is released and a first bolt is bucked (severed), the first bolt being defined generally by the butt end and the first gripping point. A second portion of the tree trunk is delimbed by moving the carriage, the gripping means and the tree trunk gripped thereby, relative to a second delimbing means, toward the holding means, the second portion being defined by a gripping point and a second predetermined point along the tree trunk or the end of the usable portion of the trunk, whichever comes first. The second delimbing means is oppositely disposed along the boom member from the holding means. A second topping means is provided for topping a second bolt defined generally by the first gripping point and the second predetermined point, the second topping means being adjacent the second delimbing means along the boom member. The method and apparatus disclosed herein permits delimbing to occur during both the outward movement of the carriage and the return of the carriage, thus utilizing the entire operational cycle and permitting the delimbing of a tree trunk substantially longer than the travel of the carriage.
REFERENCES:
patent: 3461928 (1969-08-01), Siiro
patent: 3618647 (1971-11-01), Stuart, Jr.
patent: 3623521 (1971-11-01), Shields
patent: 3643711 (1972-02-01), Puna
patent: 3721280 (1973-03-01), French
patent: 3889729 (1975-06-01), Pinomaki
Jasinski Stanley C.
Windsor Robert N.
Bray W. D.
Eaton Yale Ltd.
Simpson Othell M.
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