Vertical vacuum diecasting machine

Claim 1

IN A VERTICAL DIECASTING MACHINE, A STATIONARY BOTTOM PLATEN, A LOWER DIE HALF FIXED TO THE UPPER FACE OF SAID STATIONARY BOTTOM PLATEN, AN UPPER MOVABLE PLATEN ARRANGED OVER AND MOVABLE VERTICALLY RELATIVE TO SAID STATIONARY LOWER PLATEN AND DIE HALF, A COVER DIE HALF FIXED TO THE UNDER FACE OF SAID UPPER MOVABLE PLATEN AND MATTO THE UNDER FCE OF SAID UPPER MOVABLE PLATEN AND MATHALVES DEFINING BETWEEN THEM AND MOLD CAVITY, A SHOT CYLINDER COMMUNICATING WITH SAID MOLD CAVITY, A MOLTEN METAL BATH BELOW SAID BOTTOM PLATEN, A FEEDING TUBE BETWEEN THE BORE OF SAID SHOT CYLINDER AND SAID MOLTEN METAL BATH, A SHOT PLUNGER IN SAID BORE OF SAID SHOT CYLINDER AND RETRACTABLE TO ESTABLISH COMMUNICATION BETWEEN SAID BORE OF SAID SHOT CYLINDER AND SAID FEEDING TUBE, MEANS EVACUTAING SAID MOLD CAVITY WHEN SAID COVER AND LOWER DIES ARE IN MATING CONTACT, AND MEANS FOR ACTUATING SAID SHOT PLUNGER TO PROGRESSIVELY DRAW A CHARGE OF MOLTEN METAL INTO SAID SHOT CYLINDER AND TO PROJECT SAID CHARGE OF MOLTEN METAL FROM SAID SHOT CYLINDER INTO SAID EVACUATED DIE CAVITY, VERTICAL EJECTOR PIN BORES THROUGH SAID COVER DIE HALF AND TERMINATING AT THEIR LOWER ENDS IN SAID MOLD CAVITY, EJECTOR PINS IN SAID EJECTOR PIN BORES, MEANS MOVING SAID EJECTOR PINS IN SAID BORES AND INTO AND OUT OF SAID MOLD CAVITY AND MEANS EVACUATING THE UPPER ENDS OF SAID EJECTOR PIN BORE.