Woodworking – Bench dog
Patent
1977-04-04
1978-05-16
McGehee, Travis S.
Woodworking
Bench dog
83 4, 83418, 83436, 144 13, 144323, B27M 108, B27M 302, B27C 100
Patent
active
040893553
ABSTRACT:
A plurality of rows of vertically spaced discs are located on opposite sides of the path of movement of a shake blank as it is pushed along a cutting plane into the path of a bandsaw blade. The discs on each side of the cutting plane have respective radii either uniformly progressively increasing for a portion of their perimeters or uniformly progressively decreasing for a portion of their perimeters so that as the discs rotate they engage opposite side faces of the blank, advancing the blank in the cutting path and simultaneously skew the rearward end of the shake laterally of the cutting plane so that the shake blank is cut along a diagonal. The framework supporting all of the discs can be moved to simultaneously shift all discs laterally to accommodate cutting characteristics of a particular saw blade. Initial positioning of the forward end and final positioning of the rearward end of the blank for overly thick blanks is obtained by cam surfaces on the two rows of discs closest upstream of the blade. The blank is positioned at its forward end so that its side surface is generally in alignment with the cutting plane and as the blade is nearing the rearward edge of the blank the opposite side face of the blank is moved positively into the cutting plane.
REFERENCES:
patent: 3171450 (1965-03-01), Boullet
patent: 3554250 (1971-01-01), Ulsky
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