21 PAPER REGISTERING SYSTEMS AND OTHER WEB SPEED CONTROL DEVICES INCLUDING EDGE GUIDES, ONE-WAY CIRCUMFERENTIAL REGISTER CONTROLS, TWO-WAY CIRCUMFERENTIAL REGISTER CONTROLS, WEB SPLICE DETECTORS, WEB BREAK DETECTORS, CUT OFF LENGTH CONTROLS, AS WELL AS ELECTRICAL AND OTHER COMPONENTS THEREOF, SUCH CONTROLS AND DETECTORS INCLUDE PHOTOELECTRIC CONTROL DEVICES WHICH ARE SENSITIVE TO WEB MOVEMENTS, RELAY CIRCUITRY RESPONSIVE TO SUCH PHOTOELECTRIC CONTROL DEVICES, WEB SPEED CORRECTION DEVICES RESPONSIVE TO THE RELAY CIRCUITRY, AND VARIOUS COMBINATIONS THEREOF
Trademark: 72153006
