Yarn-coil winding machine

Claim 1

IN AN AUTOMATIC WINDING MACHINE FOR REWINDING A TEXTILE FILAMENT TAKEN FROM A FILAMENT-SUPPLY COIL STATIONED THEREON, HOLDER MEANS MOUNTED ON THE MACHINE TO RECEIVE AND TO CARRY THE REPLACEMENT COIL WHILE BEING UNWOUND, A TAKE-UP SPOOL ON WHICH THE FILAMENT IS REWOUND, A DRUM FOR ROTATING THE SPOOL AND GUIDING THE FILAMENT THERETO, AN AUTOMATIC FILAMENT TYING DEVICE TO TIE THE FILAMENT STARTING END OF A REPLACEMENT COIL TO THE TRAILING END OF A FILAMENT OF SAID COIL ON THE TAKE-UP SPOOL; PIVOTED GRIPPER MEANS TO SEIZE THE TRAILING END AND MOVE IT TOWARD THE TYING MEANS, SECOND PIVOTED GRIPPER MEANS TO SEIZE THE STARTING END OF A REPLACEMENT COIL AT A PREDETERMINED SEEKING LOCATION AND MOVE SAID STARTING END TOWARD THE TYING DEVICE, AND FILAMENT-END RETAINING MEANS HAVING AN OPENING BEHIND SAID SEEKING LOCATION RELATIVE TO THE FILAMENT-TRAVEL DIRECTION FOR INDUCTING INTO THE RETAINING MEANS THE FILAMENT END WHEN THE FILAMENT BREAKS ALONG THE TRAVEL PATH BETWEEN SAID SUPPLY COIL AND SAID TAKE-UP SPOOL, SAID FILAMENT-END RETAINING MEANS COMPRISING A SUCTION TUBE FOR CONNECTION TO A SOURCE OF NEGATIVE PRESSURE, SAID YARN END ENTRAINING MEANS INCLUDING A CONTROL DEVICE HAVING VALVE MEANS FOR DISCONNECTING SAID SUCTION TUBE FROM SAID NEGATIVE-PRESSURE SOURCE DURING THE SEEKING OPERATION OF SAID SECOND GRIPPER MEANS.