Method and apparatus for assembling pronged binding strips with

Details Method and apparatus for assembling pronged binding strips with Method and apparatus for assembling pronged binding strips with

1981-11-04

1984-07-03

Bell, Paul A.

Bookbinding: process and apparatus

Process

Of edge fastening

140 71R, 412 34, 412 39, B42C 1900, B21F 4500

Patent

active

044576552

ABSTRACT:
Stacks of marginally perforated paper sheets are assembled with prefabricated C-shaped binding strips at timely spaced intervals by moving two or more stacks simultaneously to a binding station so that the perforations of their sheets form a row, moving at the same intervals a strand of coherent strips lengthwise and cutting groups of discrete strips from the leader of the strand at a severing station which is remote from the binding station, transferring successive groups from the severing station to the binding station including moving the strips of each group sideways at least once and spreading the strips of each group by moving at least some strips of the group axially and away from the neighboring strips, and inserting the strips of a group into and closing the strips of such group in the perforations of stacks of sheets at the binding station. The apparatus can make stationery articles with one-piece binders or with so-called skip binders consisting of two or more spaced-apart coaxial binders. The devices which close the stips at the binding station also serve to deliver the groups of strips to the binding station, either from the spreading station or from an intermediate station which is located between the spreading and binding stations.

REFERENCES:
patent: 2097888 (1937-11-01), Leyerle
patent: 2117242 (1938-05-01), Eramo
patent: 2555290 (1951-05-01), November
patent: 3334918 (1967-08-01), Pigna et al.
patent: 3555587 (1971-01-01), Seaborn
patent: 3566927 (1971-03-01), Adams
patent: 4020516 (1977-05-01), Gomez
patent: 4281690 (1981-08-01), Lemburg

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