Control device and components thereof for electromotive drive for winding bobbins for yarn and the like

Claim 1

A CONTROL DEVICE FOR THE ELECTROMOTIVE DRIVE OF WINDING BOBBINS FOR THREADS MADE OF SYNTHETIC MATERIAL, WOOL, COTTON OR SIMILAR MATERIAL, COMPRISING A WINDING BOBBIN RECEIVING THREAD TO BE WOUND THEREON, A THREE-PHASE CURRENT SHORT-CIRCUIT ROTOR MOTOR INCLUDING A STATOR HAVING THREE PHASE WINDINGS AND A CASING HAVING A MOTOR SHAFT, MEANS CONNECTED WITH SAID MOTOR SHAFT FOR ROTATING SAID WINDING BOBBIN, AN ELECTRIC CIRCUIT CONNECTED WITH SAID THREE-PHASE WINDINGS OF SAID STATOR OF SAID THREE-PHASE CURRENT SHORTCIRCUIT ROTOR MOTOR, SAID ELECTRIC CIRCUIT INCLUDING A CONTROL CIRCUIT, A CENTRIFUGAL GOVERNOR ELECTRICALLY COUPLED TO THE SAID CONTROL CIRCUIT, RESISTOR MEANS IN TWO PHASES OF SAID THREE-PHASE WINDINGS RENDERED OPERATIVE IN RESPONSE TO A PREDETERMINED SPEED OF SAID GOVERNOR, FOLLOWER ROLLER MEANS ENGAGING AND DRIVEN BY SAID WINDING BOBBIN AND OPERATIVELY CONECTED WITH SAID CENTRIFUGAL GOVERNOR, SAID CENTRIFUGAL GOVERNOR INCLUDING MEANS FOR OPENING SAID CONTROL CIRCUIT IN RESPONSE TO A PREDETERMINED SPEED, SAID CONTROL CIRCUIT INCLUDING A CONTACT PROTECTION CIRCUIT MEANS AND ALSO INCLUDING MEANS ACTUABLE UPON OPENING SAID CONTROL CIRCUIT UPON REACHING SAID PREDETERMINED SPEED OF SAID CENTRIFUGAL GOVERNOR FOR CONNECTING SAID RESISTOR MEANS WITH SAID TWO OF SAID THREE-PHASE WINDINGS, POWER SUPPLY MEANS CONNECTED WITH SAID THREE-PHASE WINDINGS, SAID THREE-PHASE WINDINGS OF SAID STATOR OF SAID THREEPHASE CURRENT SHORT-CIRCUIT ROTOR MOTOR BEING CONNECTED IN STAR ARRANGEMENT, AND SAID MOTOR CASING BEING GROUNDED, WHEREBY A PREDETERMINED UNIFORM SPEED OF WINDING OF SAID THREAD IS BROUGHT ABOUT.