Method and apparatus for the attachment of clasps to letter enve

Details Method and apparatus for the attachment of clasps to letter enve Method and apparatus for the attachment of clasps to letter enve

1989-08-30

1991-02-19

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493385, B31B 190, B31B 2136

Patent

active

049940104

ABSTRACT:
There is provided a method and apparatus for the attachment of clasps on letter envelopes incorporated into a machine for the manufacture of letter envelopes. The clasps, at the conclusion of the folding operation of the envelope machine, following the folding down of the lateral flaps of the envelope, are attached to the newly formed back sides of the letter envelopes. The apparatus is arranged for this purpose at the downstream end of a lateral folding mechanism of the envelope machine and includes a stationary opposing support plate.

REFERENCES:
patent: 1114178 (1914-10-01), Olm
patent: 1508467 (1924-09-01), Novick
patent: 1556369 (1925-10-01), Stiriss
patent: 1931155 (1933-10-01), Pearce
patent: 2269954 (1942-01-01), Novick
patent: 3893381 (1975-07-01), Chapman et al.

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