Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means
Patent
1980-05-19
1982-01-05
Wityshyn, Michael G.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With work feeding or handling means
156494, 156577, 156578, 156579, B32B 3100, B44C 702
Patent
active
043092381
ABSTRACT:
To apply a selectively variable tensioning force to the toothed traction wheels of an automatic wallboard joint taper, and to preclude reverse wheel rotation, an adjustable pawl mechanism is attached to the taper head behind the wheels. The mechanism includes a mounting plate extending transversely between the head assembly side plates, a pawl arm pivoted at one end to a lower portion of the mounting plate, a pawl connected to the plates and positioned behind one of the wheels. A spring connected at one end to a point along the length of the pawl arm, and at its other end to one of a series of apertures in an upper mounting plate lip, exerts a pivotal force on the arm. This biases the pawl into wedging engagement with the wheel and the stop. The biasing force, and thus the tensioning force exerted on the wheel by the pawl, may be selectively varied simply by connecting the tensioning spring between a different point on the pawl arm and a different aperture in the mounting plate lip.
REFERENCES:
patent: 2556443 (1951-06-01), Renne
patent: 4086121 (1978-04-01), Ames
patent: 4090914 (1978-05-01), Hauk et al.
Hawk Industries, Inc.
Wityshyn Michael G.
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