Sack making equipment

Details Sack making equipment Sack making equipment

1975-07-28

1977-07-19

Coan, James F.

B31B 2102

Patent

active

040361152

ABSTRACT:
The present invention relates to bag making machines, a particular embodiment of which comprises a system of two-way gates, a tubing machine which forms a tube of suitable material, cuts the formed tube into tube lengths and axially discharges the tube lengths into the system of two-way gates, a plurality of sewing machines and associated feed conveyors, the system of gates directing the tube lengths in a cyclic sequence to the sewing machine feed conveyors which transfer the tube lengths sideways to the sewing machines. The operation timing of the sewing machines and associated feed conveyors and the system of two-way gates is controlled with respect to that of the tubing machine drive.

REFERENCES:
patent: 1842680 (1932-01-01), Litchfield
patent: 1926421 (1933-09-01), Andreas
patent: 3566754 (1971-03-01), Stork et al.
patent: 3580141 (1971-05-01), Richter
patent: 3871270 (1975-03-01), Kuckhermann et al.

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