Apparatus for forming loops in tube sections for making sacks fo

Details Apparatus for forming loops in tube sections for making sacks fo Apparatus for forming loops in tube sections for making sacks fo

1979-08-30

1981-08-25

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493449, 493450, 493254, B31B 152

Patent

active

042856850

ABSTRACT:
Sections of bag-making material are successively and intermittently fed by double belt conveyors to arrive beneath a vertically reciprocatable push member which engages each section by suction and forms a central loop in each section while its ends are yieldingly engaged by brake shoes co-operating with side supports.

REFERENCES:
patent: 2205127 (1940-06-01), Spiess
patent: 3190049 (1965-06-01), Van der Meulen
patent: 3838631 (1974-10-01), Simpson et al.
patent: 3918698 (1975-11-01), Coast
patent: 4115183 (1978-09-01), Achelpohl et al.

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