Method and apparatus for automatically controlling travel of two

Details Method and apparatus for automatically controlling travel of two Method and apparatus for automatically controlling travel of two

1981-10-16

1983-09-13

Levy, Stuart S.

Advancing material of indeterminate length

With material-responsive control means

To regulate longitudinal movement of material

226 2, 226 38, B65H 2300, B65H 2310, B65H 2304

Patent

active

044037180

ABSTRACT:
This invention provides an improved method and apparatus for automatically controlling travel of two transversely spaced parallel plastics film strips in a bag-making machine or the like that can correct rapidly the relative positional gaps produced between the register marks on the strips by means of a new retarding device for the strips as incorporated in the apparatus.

REFERENCES:
patent: 3556509 (1971-01-01), Crum
patent: 3816210 (1974-06-01), Aoka et al.
patent: 4011975 (1977-03-01), Brown, Jr.

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