Sheet-material associating – Associating and folding – Zigzag package
Patent
1990-03-05
1991-05-14
Kwon, John T.
Sheet-material associating
Associating and folding
Zigzag package
270 30, 493357, 493411, 493414, 225 965, 83 29, B41L 132
Patent
active
050149717
ABSTRACT:
In a conventional Bunch folder having a swing chute, beaters, spirals mounted for rotation about vertical axes, and a reciprocal cutting blade, a cut initiating device is provided. The cut initiating device initiates a cut (forms a knick) at the edge of a perforation between adjacent business forms to be severed from each other, so that the cutting blade may easily sever the forms completely at the perforation. The cut initiating device comprises a short horizontally extending blade mounted by a collar to a shaft of the spiral adjacent the cutting blade start position so that the blade is rotatable with the spiral for engaging the folding web at a perforation and forming a 1/16 to 1/2 inch cut in the perforation at an edge. The blade may have a horizontal cutting edge portion, a cantilevered portion at a different level than the cutting edge portion and a step portion interconnecting the cutting and cantilevered portions. A knick in the edge is formed at first predetermined intervals (e.g. every other fold perf), while complete severing by the reciprocal blade is practiced every 100 forms or so.
REFERENCES:
patent: 4205836 (1980-06-01), Nystrand
patent: 4623136 (1986-11-01), Bunch Jr.
patent: 4650447 (1987-03-01), Meschi
patent: 4915644 (1990-04-01), Bunch Jr.
B. Bunch Company Procedural Manual, Oct. 1983.
Kwon John T.
Moore Business Forms Inc.
Newholm Therese M.
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