Compact small diameter log sawmill

Woodworking – Combined machine – Planing and sawing

Patent

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Details

144 31, 1442461, 1442502, 14425023, 144220, 144225, 144235, 144357, 144370, 144241, 144178, 198780, 198782, 198789, B27M 100, B27C 108

Patent

active

059154292

ABSTRACT:
A sawmill that is a compact integrated unit of a multiplicity of components all mounted on a common frame for performing different functions to produce pieces of lumber from a log. Logs can be processed that have a minimum diameter of approximately 2" and a minimum length of approximately 42" with the overall length of the mill being approximately 17'. There are a number of power driven feed and guide rolls that propel a log endwise along a fixed path. The processing components include first and second pairs of chipper canter units with novel chipper heads, a pair of rabbet units in which each has a pair of cutter heads on concentric telescopic shafts and power driven rolls for off-feeding pieces of lumber of differing widths. The log feed speed and/or chipper head speed can be varied to provide chips of selected different lengths. Positioning of the processing units is controlled by a programmed processor unit. The cut pattern and selective use of the edger is dictated by log geometry determined by scanning the logs before processing begins.

REFERENCES:
patent: 3457978 (1969-07-01), Ahlstedt
patent: 3934630 (1976-01-01), Cockle
patent: 3960041 (1976-06-01), Warren et al.
patent: 4015648 (1977-04-01), Shephard
patent: 4327789 (1982-05-01), Reuter
patent: 4335767 (1982-06-01), Reuter
patent: 4599929 (1986-07-01), Dutina
patent: 4947909 (1990-08-01), Stroud
patent: 5201351 (1993-04-01), Hurdle
patent: 5396938 (1995-03-01), Cannaday
patent: 5421386 (1995-06-01), Lundstrom

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