Cutting – With means to convey work relative to tool station – Cut made parallel to direction of and during work movement
Patent
1976-03-18
1977-06-28
Schran, Donald R.
Cutting
With means to convey work relative to tool station
Cut made parallel to direction of and during work movement
834252, 144312, B27B 502
Patent
active
040317900
ABSTRACT:
A lumber trimmer comprises a saw table for transversely moving lumber pieces to be trimmed, a stationary cross-cut saw for cutting one end of the lumber pieces and a plurality of trim saws for cutting the other end. All saws are disposed along a line extending lengthwise with the trim saws mounted at regular intervals on a saw carriage which is displaceable in the lengthwise direction. A linear pneumatic positioner for the saw carriage comprises three double-acting cylinders connected with each other in series relation. The ratios of the lengths of stroke of the cylinders are 1 to 2 to 3, so that the positioner is capable of positioning the saw carriage at any selected one of seven uniformly spaced-apart positions.
REFERENCES:
patent: 3906829 (1975-09-01), Westfall
patent: 3937114 (1976-02-01), Joensson
A & B Constructors AB
Schran Donald R.
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