Sheet-material associating – Associating and folding – Stapling or stitching
Patent
1992-11-18
1994-08-30
Look, Edward K.
Sheet-material associating
Associating and folding
Stapling or stitching
270 53, 227 81, B27F 717, B41L 4312
Patent
active
053420322
ABSTRACT:
The stitching or stapling heads, which act together in a stitching zone (C) with the supports that carry printed products to be wire-stitched, have a circular orbit. The stitching heads are guided so as to maintain their more or less vertical position during their orbit. Within the stitching zone (C), each stitching head is thus approximately aligned with its respective support and is therefore in the preferred position for driving the staples into the printed products. When the stitching heads encounter the supports, they are pushed back radially inward against the resistance of compression springs. This causes a slight flattening in the orbit of the stitching heads in the stitching zone (C) and slightly prolongs the time available for the stitching heads to act together with the supports in the stitching process.
REFERENCES:
patent: 715890 (1902-12-01), Smyth et al.
patent: 3653570 (1972-04-01), Alsop
patent: 3762622 (1973-10-01), Noren
patent: 4750661 (1988-06-01), Pane
patent: 4792077 (1988-12-01), Faltin
patent: 5098002 (1992-03-01), Hansch et al.
patent: 5137409 (1992-08-01), Honegger
patent: 5172897 (1992-12-01), Hansch et al.
patent: 5174557 (1992-12-01), Meier
Ferag AG
Look Edward K.
Ryznic John
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