Automatic regulation of the position of the lateral edge of a tr

Details Automatic regulation of the position of the lateral edge of a tr Automatic regulation of the position of the lateral edge of a tr

1976-04-27

1977-09-20

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

226 19, 226 20, B65H 2526

Patent

active

040492133

ABSTRACT:
A web travels along a predetermined path. A regulating system automatically keeps the position of the preselected first tolerance range. The system includes sensing, position-correcting and regulator units. The sensing unit senses the position of the lateral edge of the travelling web. The position-correcting unit effects corrective movements of the travelling web in a manner causing the lateral edge thereof to change positions. The regulator unit is connected to the sensing and position-correcting units and causes the latter to effect corrective movements of the travelling web at a first speed when the sensed position of the web edge is outside the first tolerance range and at a different second speed when the sensed position of the web edge is outside a preselected different second tolerance range.

REFERENCES:
patent: 2641416 (1953-06-01), McCleary
patent: 3232547 (1966-02-01), Thiede
patent: 3568904 (1971-03-01), Kurz
patent: 3786974 (1974-01-01), Kron

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