Lumber trimmer

Details Lumber trimmer Lumber trimmer

B - Operations, Transporting

27

B

143/33

B27B 5/02 (2006.01) B27B 5/22 (2006.01) B27B 5/34 (2006.01)

Patent

CA 1038265

ABSTRACT OF THE DISCLOSURE 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. - 1 -

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