Coil construction and means for locking the leads thereon

Claim 1

AN ELECTRIC MOTOR COIL COMPRISING: A BOBBIN HAVING A FLANGE AT EITHER END, A WIRE WINDING ON SAID BOBIN BETWEEN SAID FLANGES AND HAVING START AND FINISH WIRES EXTENDING THEREFROM, A LOCKING TUBE OF INSULATING MATERIAL SECURED ALONG ITS LENGTH ON A FLANGE FOR EACH START AND FINISH WIRE, EACH TUBE HAVING A PASSAGE THERETHROUGH, AN INSULATED LEAD WIRE EXTENDING FROM EACH TUBE, THE LEAD WIRE FOR EACH TUBE HAVING A STRIPPED END PORTION LYING IN SAID PASSAGE, A COLLAR MECHANICALLY SECURED AROUND SAID END PORTION AND HAVING AN INTERFERENCE FIT IN SAID PASSAGE, SAID START AND FINISH WIRES BEING EACH ELECTRICALLY CONNECTED TO A RESPECTIVE ONE OF SAID LEAD WIRE END PORTIONS WITHIN A TUBE PASSAGE, SAID CONNECTION PREVENTING WITHDRAWAL OF SAID END PORTION THROUGH THE COLLAR, SAID CONNECTION BEING AT THE STRIPPED END OF THE LEAD WIRE AND SAID COLLAR BEING BETWEEN THE CONNECTION AND THE LEAD WIRE EXTENSION OUT OF THE TUBE, SAID LOCKING TUBES BEING OF HEAT-SOFTENABLE MATERIAL, SAID COLLARS BEING OF METAL ADAPTED TO BE FORCED INTO SAID TUBES WHEN HOT FOR LOCKING THE LEAD WIRES TO THE BOBBIN.