Sheet-material associating – Associating or disassociating – Signature associating
Patent
1977-11-25
1979-06-12
Burr, Edgar S.
Sheet-material associating
Associating or disassociating
Signature associating
11 1A, B42B 200
Patent
active
041578210
ABSTRACT:
Note books having marginal holes consisting of registering perforations in the sheets of the note books are manipulated prior to insertion of metallic or plastic spirals, which are to be transformed into binders that hold the note book sheets together, so as to convert each hole into an arcuate passage having a radius of curvature which matches or approximates the radius of the spiral. The conversion takes place in two successive stages at two discrete aligning stations adjacent to the path of holders which are supported by an indexible turret and each of which grips one or more note books. At the first aligning station, each hole receives the tips of two mandrels which are introduced from the opposite sides of the note book and are thereupon pivoted so that the respective hole is converted into a V-shaped passage. At the second station, a comb introduces its arcuate prongs into the adjacent V-shaped passages and the sheets are thereupon shifted relative to the inserted prongs so that the V-shaped passages are converted into arcuate passages having a curvature which matches the curvature of the prongs. The curvature of the prongs, in turn, matches the curvature of the convolutions of a spiral.
REFERENCES:
patent: 2273824 (1942-02-01), Barrett
Burr Edgar S.
Heinz A.
Kontler Peter K.
Womako-Maschinenkonstruktionen GmbH
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