Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1987-12-21
1989-02-21
Watkins, Donald
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
226 71, B65H 2020, B65H 2036
Patent
active
048058220
ABSTRACT:
A tractor for driving web material has an endless belt which travels about spaced apart drive and idler sprockets, one of which is an entrance sprocket and the other an exit sprocket. The idler sprocket is journalled in a support member which is movable on the tractor chassis by an adjusting member to vary the spacing between the sprockets and thereby adjust the tension in the belt. The belt carries the paper over a rectilinear path between the sprockets and the chassis has upper surfaces along that path which rise prior to the exit sprocket to lift the paper on the drive pins on the belt and provide a ramp surface clearance to effect clearance of the drive pins in the perforations of the paper so that they rotate downwardly without excessive wear and friction between the web around the perforations and the surface of the pins.
REFERENCES:
patent: 2820155 (1958-01-01), Rainey
patent: 3013444 (1961-12-01), Burkhard et al.
patent: 4130230 (1978-12-01), Seitz
patent: 4194660 (1980-03-01), Seitz
patent: 4428519 (1984-01-01), Reichl et al.
patent: 4462531 (1984-07-01), Seitz
patent: 4469262 (1984-09-01), Seitz
patent: 4469263 (1984-09-01), Seitz
patent: 4566618 (1986-01-01), Seitz et al.
patent: 4638935 (1987-01-01), Wald
patent: 4723697 (1988-02-01), Tano et al.
Data Motion, Inc.
Watkins Donald
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