US Patent:
20120037276, Feb 16, 2012
Inventors:
Erik Granberg - El Sobrante CA, US
Bruce Jackson - San Francisco CA, US
International Classification:
B27B 1/00
B27B 17/00
B27B 15/00
US Classification:
144378, 144 21, 83794, 83820
Abstract:
The chainsaw apparatus of the present invention, comprising in part, a combination saw attachment and positioning assembly which in concert with a transverse guide rail assembly and a vertical level control assembly allows using a chain saw to alternatively make a cut or a series of cuts in either a vertical or horizontal plane, with said saw blade oriented in a longitudinal cutting direction, in a sawmill device; providing thus for making a cant without turning the log and for making dimensionally accurate cuts of lumber from a log or similar wood based substrate with a minimal number of cutting passes; a blade orientation fine tuning assembly allows of refining a true vertical or horizontal planar attitude of the blade. Two speed mechanical assist gantry travel and a double acting remote chain saw safety switch and throttle trigger control is also provided. No tools are needed to alter and maintain the planar arrangement of the chain saw or the position of the saw carriage section along the transverse guide rail assembly of the gantry of the sawmill. The apparatus is modular and can be assembled and used by one person and is transportable in a van or pickup.
