Process and apparatus for separating supple sheets from a stack

Details Process and apparatus for separating supple sheets from a stack Process and apparatus for separating supple sheets from a stack

1974-10-24

1976-09-21

Blunk, Evon C.

Sheet feeding or delivering

Feeding

Separators

221213, B65H 322

Patent

active

039814955

ABSTRACT:
A process for separating one or more supple sheets from a stack includes the steps of compressing the stack at least in the vicinity of its opposite upper edges, simultaneously or subsequently introducing sharp projections in or near the edges in order to pick up the sheet or sheets, moving the opposite projections apart slightly in opposite directions to tighten or stretch the sheet or sheets and finally lifting the engaged and tightened sheet or sheets from the stack. Apparatus for performing this process comprises a pair of separating members movable vertically toward and away from the stack of sheets, the members including a surface adapted to compress the stack in the vicinity of opposite upper edges thereof. The members also include pricking members which are movable horizontally relative to the stack and engageable with a predetermined number of uppermost sheets therein.

REFERENCES:
patent: 793009 (1905-06-01), Miller
patent: 3386763 (1968-06-01), Ottaway et al.
patent: 3471994 (1969-10-01), Cranston et al.
patent: 3601390 (1971-08-01), Morton
patent: 3625506 (1971-12-01), Rovin

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