Machine for stapling and folding a stack of paper sheets to form

Details Machine for stapling and folding a stack of paper sheets to form Machine for stapling and folding a stack of paper sheets to form

1980-07-10

1983-10-18

Heinz, A. J.

Sheet-material associating

Associating and folding

Stapling or stitching

493444, B41L 4312

Patent

active

044101708

ABSTRACT:
Machines for stapling and folding a stack of paper sheets, having a reciprocable tray to receive and move a stack of paper sheets between a rest, stapling position and a sheet-folding position; solenoid-operated staplers to staple together said sheets in a stapling line, a blade on said machine reciprocally movable between a rest position and a sheetfolding, extended position wherein an edge of said blade presses against said stack of paper sheets at said stapling line, a power-driven pair of spaced, opposed rollers with the nip between rollers aligned with said blade to allow said blade in its extended position and the bent stack of paper sheets thereon to enter said nip, whereupon said power-driven rollers grip and fold said sheets along said stapling line, electrically powered drive means to move said blade to extended position when said tray is moved into said sheet-folding position, whereby said power-driven pair of rollers lift the stapled, folded sheets off of said blade and convey said stapled, folded sheets for ejection as a stapled, folded book, a second pair of power-driven, spaced, opposed rollers having a nip aligned with the nip of said first-mentioned pair of rollers in the extended plane of said blade, the nip of said second pair of rollers being narrower than the nip of said first-mentioned pair of rollers to impart to said stapled, folded sheets a sharp bend of approximately 180.degree. and also to eject the stapled book from said rollers toward a book collection tray, and a switch activated by movement of said tray to said sheet-folding position to cause the electrically powered drive means for said blade to reciprocate it into said sheet-folding, extended position.

REFERENCES:
patent: 1287334 (1918-12-01), Kast
patent: 2007210 (1935-07-01), Neidig
patent: 2335970 (1943-12-01), Schmidt
patent: 2470754 (1949-05-01), Alber
patent: 3536318 (1970-10-01), Gay
patent: 3554531 (1971-01-01), Heigl
patent: 3901501 (1975-08-01), Kistner
patent: 3926425 (1975-12-01), Pierce
patent: 4270742 (1981-07-01), Kobayashi

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