Sawmill log-handling system

Details Sawmill log-handling system Sawmill log-handling system

1975-03-10

1977-03-01

Schran, Donald R.

Cutting

With means to convey work relative to tool station

Plural passes of diminishing work piece through tool station

144 32R, 834352, 198604, 144245A, 144242D, B27B 1508, B27B 100

Patent

active

040096327

ABSTRACT:
Logs are advanced through a saw while they are engaged between driven pusher dogs and retarded hold-back dogs. The pusher dogs are mounted on a lower endless roller chain below the logs, and the hold-back dogs are on an upper endless roller chain above the logs. The upper chain and its hold-back dogs are vertically movable to elevations dependent on the elevation of a log, thus assuring proper engagement. When the sawed portion of a log is retained laterally on a support, the hold-back dogs are moved forwardly away from the log so that a hold-back dog will be in the path of the next log to be handled by the system.

REFERENCES:
patent: 2332654 (1943-10-01), Mead et al.
patent: 2964074 (1960-12-01), Brown
patent: 3180377 (1965-04-01), Pinder
patent: 3587684 (1971-06-01), Bush
patent: 3731578 (1973-05-01), Ackerfeldt

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