Log handling method and apparatus

Details Log handling method and apparatus Log handling method and apparatus

1978-10-31

1980-06-10

Schran, Donald R.

Cutting

With means to convey work relative to tool station

Plural passes of diminishing work piece through tool station

834352, 83437, 834252, 83730, 144312, B27B 1504, B27B 2908

Patent

active

042066735

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: 3731578 (1973-05-01), Ackerfeldt
patent: 3960041 (1976-06-01), Warren et al.
patent: 4117755 (1978-10-01), Hasenwinkle et al.

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