Cutting – With means to convey work relative to tool station – With work-constraining means on work conveyer
Patent
1979-09-10
1981-09-29
Schran, Donald R.
Cutting
With means to convey work relative to tool station
With work-constraining means on work conveyer
83418, 83420, 83422, 83435, 834352, 83871, 83920, 144 13, B27M 302
Patent
active
042916011
ABSTRACT:
A shake resaw feed system is used with a band saw for lengthwise sawing of tapered wood shingles from shake blanks or slabs. The feed system includes an endless chain conveyor having flights or push paddles spaced equidistantly apart along the chain for pushing each slab longitudinally toward the blade of the band saw. Along the conveyor are guides including a fence on one side of the conveyor and flexible fingers on the other side of the conveyor for urging the slabs against the fence as they proceed along the conveyor. The fence is automatically shifted laterally during sawing of the slab to produce a tapered cut through the slab. The system also includes apparatus for sensing the thickness of the slabs and for automatically repositioning the fence laterally to equalize the thickness of the shingles cut from the slab. Downstream of the band saw is a second conveyor in the form of drag wheels for grasping the pair of shingles being cut from each slab as they pass the blade, and for pulling the slab through the blade. The drag wheels are laterally movable as a unit and are individually separable to accommodate shakes of different thicknesses.
REFERENCES:
patent: 1593800 (1926-07-01), King
patent: 1842419 (1932-01-01), Morris
patent: 1895016 (1933-01-01), Whiting
patent: 1976171 (1934-10-01), Hutchings
patent: 2634768 (1953-04-01), Hight
patent: 3171450 (1965-03-01), Boullet
patent: 3314455 (1967-04-01), Taylor
patent: 3407855 (1968-10-01), Ritchie
patent: 3927706 (1975-12-01), Davey
patent: 4089355 (1978-05-01), Dueck
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