Woodworking – Combined machine – Planing and sawing
Patent
1979-08-10
1980-12-16
Spruill, R. L.
Woodworking
Combined machine
Planing and sawing
144136H, 144312, 144326R, B27C 904
Patent
active
042390699
ABSTRACT:
A woodworking machine to convert round logs to square or rectangular cants by initially cutting with initial chipping cutters pairs of adjacent grooves respectively in the opposite upper and lower surfaces of each log to form corners of said cant thereon and also form the side edges of four boards to be sawed from the log incident to forming the cant, and then delivering the log to a conveyor extending between the inlet and discharge ends of the machine and having support elements thereon complementary to the lower cant corner of said logs and additional series of guide elements above and coextensive with said conveyor which engage the upper corner of said cant on the log, whereby the log is securely and accurately held between said conveyor and guide elements during a single passage through the machine during which, downstream from the inlet end of the machine, additional chipping cutters form other pairs of grooves respectively in the opposite sides of said logs to define side corners of the cant and also remove slag sections from four areas of the log respectively between the said pairs of grooves on said log and, farther downstream along the conveyor, pairs of rotary saws respectively at a right angle to each other are positioned to saw from the log between the successive sides of the pairs of grooves two boards from opposite sides of the upper portion of the log and two boards from the lower portion of the log while guided and held between said conveyor and additional guide elements, the cuts made by said saws also forming the ultimate side surfaces of the cant.
REFERENCES:
patent: 555037 (1896-02-01), Dees
patent: 1825041 (1929-03-01), Babare
patent: 2684088 (1954-07-01), Miller
patent: 3259157 (1966-07-01), Runnion
patent: 3304971 (1967-02-01), Pease
patent: 3313329 (1967-04-01), Mitten
patent: 3454063 (1969-07-01), Mitten
patent: 3457978 (1969-07-01), Ahlsted
patent: 3552457 (1971-01-01), Bos
patent: 3738404 (1973-06-01), Walker
patent: 4117755 (1978-10-01), Hasenwinkle
Just C. Hercus
Spruill R. L.
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