Patent ID: 6415971
Filing Date: 2002-07-09
Classification: B65H,D06B,G05B

Abstract:
An electro-mechanical sensor system for sensing the presence and absence of yarn, the electro-mechanical sensing system comprising:at least one electro-mechanical yarn detector including a yarn contacting portion thereof positioned to abuttingly contract yarn being transported on a conveyor when being conveyed thereon a switch which activates when the yarn contacting portion is in a first yarn contacting position when contacting strands of yarn and when the yarn contacting portion is in a second yarn contacting position when not contacting strands of yarn, a rod member overlying the conveyor and connected to the yarn contacting portion, and a cam member connected to said rod member and positioned to abuttingly contact said switch for activation thereof; and a controller connected to said switch for controlling the speed of take-up of the yarn responsive to the activation of said switch so that yarn take up speed increases when yarn is present and yarn take up speed decreases when yarn is absent.