Dynamically stable sheet clamping system for high speed sheet ha

Details Dynamically stable sheet clamping system for high speed sheet ha Dynamically stable sheet clamping system for high speed sheet ha

1988-11-02

1990-02-27

Skeggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271 82, 101411, 346138, B65H 504

Patent

active

049039571

ABSTRACT:
A sheet clamping system for high speed rotatable drums is provided in which light-weight clamping bars, formed of relatively thin metal sheet stock, are configured and/or oriented for maximum resistance to deflection radially of the axis of drum rotation as well as positively secured in a sheet medium clamping position at axially spaced intervals along the length of the drum. The system further includes centrifugally actuated, axially extending rods positioned to underlie the operative portion of each clamping bar in a manner such that leading and trailing edges of a retained sheet are sandwiched between the rods and the clamping bars under a clamping force generally proportional to the square of drum rotational speeds.

REFERENCES:
patent: 2099820 (1937-11-01), Meyer
patent: 2622000 (1952-12-01), Thompson
patent: 4386771 (1983-06-01), Lakdawala
patent: 4390176 (1983-06-01), Kato
patent: 4501415 (1985-02-01), Loebach
patent: 4824096 (1989-04-01), Fichter et al.

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