摘要:
Textile fabric is severed by the impingement thereagainst of a heated fluid stream, preferably compressed air heated to a temperature at least sufficient to soften thermoplastic yarns forming a portion of the fabric and impinged against the yarns at a velocity at least sufficient to separate the softened yarns, and the fabric being maintained in a tensioned condition and supported adjacent the location of impingement.
摘要:
An apparatus and method for detecting ends of yarn on a textile yarn forming machine such as a spinning machine wherein radiation source and radiation detector mounted on and movable with a traveling unit direct radiation toward ends of yarn and respond to radiation reflected therefrom, the impingement of radiation onto the detector being amplified at a low signal to noise ratio through concentration of reflected radiation by a static reflector.
摘要:
Data is originated from a textile yarn piecing apparatus movable along a textile yarn forming machine for locating and piecing up ends down thereon by monitoring operations of the yarn piecing apparatus, signaling certain states of the monitored operations and transmitting signals correlated to the states of the monitored operations.
摘要:
Improved electrical circuit means for use in an apparatus which travels a detector means along textile strand processing apparatus such as spinning frames for determining the absence of ends of yarn from locations therealong at which such ends are normally present and wherein the electrical circuit means responds to a determination that ends are down by transmitting information from a moving portion of the ends down detecting apparatus to a stationary portion thereof. The information transmitting means disclosed herein incorporates a transmitter means mounted for travel with detector and logic circuit means along a predetermined path relative to a traversed textile apparatus and having an electrical lamp energized in response to a determination that ends are down on a traversed textile apparatus, and a stationary receiver means mounted relative to the path of movement of the transmitter means for exposure to the electrical lamp thereof and having a photosensitive element responsive to illumination from the lamp for variation of an electrical characteristic of the receiver.