APPARATUS FOR DETECTING FABRIC SEAM AND DETERMINING INADMISSIBLE BENDING Russian patent published in 2002 - IPC

FIELD: textile industry. SUBSTANCE: apparatus has pulse formers connected to first AND element and to OR-NOT element, which are connected with their outputs to OR element, whose output is connected to counter control input. Counting outputs of counter are connected to second AND element connected with its output to input of device for setting trigger in single state. Direct output of trigger and output of first AND element are connected to inputs of third AND element. Output of fabric quantity sensor is connected through frequency divider to counter synchronization input. Apparatus is used for detecting and passage of fabric seam through working tools on calender, shearing and other machines. EFFECT: increased efficiency and improved invulnerability to jamming. 2 dwg