Log handling method and apparatus

Details Log handling method and apparatus Log handling method and apparatus

1977-02-25

1979-03-27

Schran, Donald R.

Woodworking

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

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

144 39, 83731, 834352, 198620, 144245A, B27B 100

Patent

active

041460723

ABSTRACT:
Logs are advanced substantially in the direction of their longitudinal axes through a saw while engaged between a driven pusher dog and a retarded holdback dog.
The pusher dog is on an endless carrier chain located above an initial log support, and the holdback dog is on an endless carrier chain located below the log path and forwardly of the support. Logs on the support are movable angularly and laterally from the machine axis to displaced positions which are unobstructed by the carrier chains, to permit offset sawing and taper sawing.
Chipper heads produce planar surfaces on logs approaching the saw. A retractible preliminary holdback dog engages the forward end of a log and moves past a bottom-flattening chipper head to a transfer area where the chain-carried holdback dog engages the log and the preliminary holdback dog is retracted.

REFERENCES:
patent: 2332654 (1943-10-01), Mead et al.
patent: 3180377 (1965-04-01), Pinder
patent: 3519045 (1970-07-01), Blickenderfer et al.
patent: 3587684 (1971-06-01), Bush
patent: 3731578 (1973-05-01), Ackerfeldt

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