Apparatus for removing branches from tree trunks

Details Apparatus for removing branches from tree trunks Apparatus for removing branches from tree trunks

1991-05-08

1992-07-07

Bray, W. Donald

Woodworking

Special-work machine

144208F, 144221, B27L 100, A01G 2302

Patent

active

051274531

ABSTRACT:
When conventional mechanical equipment for removing branches or limbs from a tree trunk is used, stumps of the branches removed remain on the tree trunk. The present invention avoids the creation of such stumps when a trunk (or a length of a trunk) is being transported through a mill or compression debarking equipment and is simultaneously rotated. The invention uses an elongate helical milling head, mounted at the end of a support arm and rotated by a motor to remove the branches. The milling head axis is positioned parallel to the axis of the trunk with the cutting surface of the milling head close to the bark of the trunk. Normally a brace member is included to stiffen the mounting of the milling head. Preferably the milling head is formed as a plurality of short milling heads mounted colinearly and with their helical cutters aligned.

REFERENCES:
patent: 512463 (1894-01-01), Bechtol
patent: 2693208 (1954-11-01), Stewart
patent: 2969816 (1961-01-01), Johnsa
patent: 3457976 (1969-07-01), Andersson et al.
patent: 4344470 (1982-08-01), Dubey
patent: 5022446 (1991-06-01), Wingate-Hill et al.

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