Cutting tool for tree delimbing device

Details Cutting tool for tree delimbing device Cutting tool for tree delimbing device

1980-09-22

1983-01-25

Bray, W. D.

Woodworking

Process

Timber harvesting or processing

144 2Z, B27L 100

Patent

active

043698247

ABSTRACT:
The invention relates to timber processing machinery, and particularly to a cutting tool for tree delimbing devices used in timber harvesting.
The cutting tool, according to the invention, comprises knives which are secured in a holder fixedly or movably attached to the frame of the delimbing device. The knife bed has a front surface and a back surface which form an angle therebetween. The knife itself has a back surface and a cutting edge surface which form a negative angle and which are supported in a shoulder at the knife bed. The back surface of the knife is disposed above the back surface of the knife bed in which said knife is mounted.
To increase the cutting effect of the delimbing device, the knife, the cutting edge thereof, the bed for the knife and bed shoulder can have a sagittate shape, or the cutting edge can be provided with sagittate teeth.
The cutting tool is designed especially for devices to be employed for delimbing trees of coniferous wood species. A cutting tool for tree delimbing containing knives that are mounted in a knife bed which is provided with a shoulder in such a manner that the surface of the knife back portion is disposed above the back portion of the knife base and the knife, its cutting edge, the knife bed and the bed shoulder have sagittate-shaped teeth.

REFERENCES:
patent: 3252487 (1966-05-01), Larson et al.
patent: 3572410 (1971-03-01), McElderry
patent: 3672413 (1972-06-01), Jouppi
patent: 3713467 (1973-01-01), Pierrot
patent: 3809134 (1974-05-01), McCabe
patent: 3941174 (1976-03-01), Oldenburg
patent: 4050486 (1977-09-01), Whitcomb
patent: 4167960 (1979-09-01), Wildey

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