Injection moulding machines

Claim 1

AN INJECTION MOLDING MACHINE COMPRISING A HEADSTOCK, A TAILSTOCK, HORIZONTAL BRACING TIE BARS EXTENDING BETWEEN THE HEADSTOCK AND THE TAILSTOCK, A MOLD SET CARRIER PLATE ROTATABLY MOUNTED ON ONE OF SAID TIE BARS, MEANS FOR MOVING THE CARRIER PLATE TOWARD AND AWAY FROM THE HEADSTOCK, AN INJECTOR UNIT MOUNTED AT THAT SIDE OF THE HEADSTOCK OPPOSITE TO THE CARRIER PLATE AND DIRECTED TOWARD THE CARRIER PLATE THROUGH AN OPENING IN THE HEADSTOCK, A MAGNETIC DEVICE DISPOSED LATERALLY OF THE HEADSTOCK AND MOVABLE TOWARD AND AWAY FROM THE CARRIER PLATE TO CLOSE AND OPEN SUCCESSIVE MOLD UNITS THEREON, SAID MAGNETIC DEVICE COMPRISING AT LEAST ONE PROJECTING ELECTROMAGNET ADAPTED TO BE ENERGIZED BY THE OPERATION OF A SWITCH EFFECTED BY THE CLOSING MOVEMENT OF THE CARRIER PLATE TOWARD THE HEADSTOCK, AND PUSHER MEANS ASSOCIATED WITH THE ELECTROMAGNET AND MOVABLE SUBSTANTIALLY CONCOMITANTLY WITH THE DEENERGERIZING OF THE MAGNET TO INSURE THE PARTING OF THE MOLD UNIT FROM THE MAGNET.