Web tension control

Details Web tension control Web tension control

1975-04-25

1976-04-13

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

226 30, 242 7553, B65H 7543

Patent

active

039499499

ABSTRACT:
Apparatus is disclosed for controlling the tension on a web which is fed to a blanking press so as to maintain proper alignment of printing on the resulting blanks. This is accomplished by means of an adjustable air brake attached to a shaft which supports a roll from which the web is withdrawn. A sensing means is employed to detect register marks on the web and to control the pneumatic pressure supplied to the air brake.

REFERENCES:
patent: 2995968 (1961-08-01), Tomberg
patent: 3294301 (1966-12-01), Richter
patent: 3648911 (1972-03-01), Pekrul
patent: 3889895 (1975-06-01), Edes

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