Method for grading and measuring lumber and a trimming device fo

Details Method for grading and measuring lumber and a trimming device fo Method for grading and measuring lumber and a trimming device fo

1975-04-25

1977-05-17

Smith, Gary L.

Woodworking

With use of control means energized in response to activator...

Including use of sensor responsive to information carried by...

83419, 83467R, 83732, B27B 100, B27B 506, B27B 3104

Patent

active

040236056

ABSTRACT:
Method and apparatus for trimming and grading lumber during transport thereof along a conveyor through a trimming device in which the lumber is cut at both root and top ends; said method comprising, arranging the lumber transverse a conveyor, initially cutting at the root end, directing the remanent transversely of the conveyor to a stop positioned to intercept the top end thereof and located less than one multiple of a length module unit, directing the remanent in the return transverse direction to one of a plurality of finger members, each located one length module from the other in a row transverse the conveyor, making the first top end cut, turning the remanent about its axis for inspection of all sides thereof and directing the remanent to a second cutter for a final top end cut determined by the number of length module units desired, the selection of length being controlled by adjustable stop means.

REFERENCES:
patent: 3565140 (1971-02-01), Jacobsen
patent: 3756297 (1973-09-01), Heikinheimo
patent: 3759384 (1973-09-01), Holmberg
patent: 3856061 (1974-12-01), Miles

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