Apparatus for positioning covers on stacks of superimposed sheet

Details Apparatus for positioning covers on stacks of superimposed sheet Apparatus for positioning covers on stacks of superimposed sheet

1990-10-31

1992-04-21

Spar, Robert J.

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1984183, 270 58, 414789, B65H 3902

Patent

active

051060698

ABSTRACT:
Apparatus for positioning covers on top of stacks of paper sheets has a transporting unit which advances a series of successive stacks along a first horizontal path and discrete covers along a second horizontal path above and adjacent the first path. The covers are accelerated by advancing along a downwardly sloping portion of the second path immediately ahead of two vertical rotary members which temporarily intercept an oncoming cover until the corresponding stack catches up with the intercepted cover. The lower portion of the stack then moves the rotary members apart to enable the stack and the cover thereon to advance along the first path beyond the rotary members. Each rotary member is mounted on a spring-biased or otherwise biased lever which is pivotable about a vertical axis.

REFERENCES:
patent: 1717430 (1929-06-01), Young et al.
patent: 2872020 (1959-02-01), Hansel et al.
patent: 3414257 (1968-12-01), Muller
patent: 3978571 (1976-09-01), Orlando et al.
patent: 4387890 (1983-06-01), Lampe
patent: 4502592 (1985-03-01), Ramcke
patent: 4508210 (1985-04-01), Ramcke
patent: 4541764 (1985-09-01), Govan et al.
patent: 4710256 (1987-12-01), Ladewig
patent: 4801036 (1989-01-01), Rathert

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