Bottom forming device for a bag forming machine

Details Bottom forming device for a bag forming machine Bottom forming device for a bag forming machine

1974-10-25

1976-05-25

Coan, James F.

93 8R, 93 22, B31B 136

Patent

active

039585000

ABSTRACT:
A bottom forming device for a bag forming machine including a pair of bottom formers, each bottom former being of plate-like construction and having a vertical side portion and a horizontal top portion connected along a fold line, the horizontal top portion being characterized according to one form of the invention by an inner edge which has an elongated portion extending inwardly and rearwardly; the vertical side portion being characterized according to one form of the invention by an upper front edge which extends upwardly and rearwardly, a lower front edge which extends downwardly and rearwardly, and the upper front edge and the lower front edge meeting to form a pointed front edge; and according to one aspect of the invention the vertical side portion has a medial lower edge portion that is upwardly arcuately bowed.

REFERENCES:
patent: 736673 (1903-08-01), Bartholomew
patent: 1176163 (1916-03-01), Potdevin
patent: 2635511 (1953-04-01), Potdevin
patent: 2691329 (1954-10-01), Evers

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