Injection moulding machines

Claim 1

AN INJECTION MACHINE INCLUDING A FIZED PLATEN AND A MOVABLE PLATEN, FIRST FLUID PRESSURE MEANS OPERABLE TO MOVE SAID MOVABLE PLATEN TOWARDS AND AWAY FROM SAID FIXED PLATEN BETWEEN RESPECTIVELY CLOSED AND OPEN POSITIONS OF SAID PLATEN, EACH OF SAID PLATENS HAVING OPPOSITE SIDE EDGES IN EACH OF WHICH IS DEFINED A SLOT, A PAIR OF ELONGATED LOCKING MEMBERS EXTENDING IN THE DIRECTION OF MOVEMENT OF SAID MOVABLE PLATEN AND MOUNTED TO SWING TRANSVERSELY RELATIVE TO SAID DIRECTION OF MOVEMENT, A PAIR OF SWING ARMS EACH ATTACHED AT ONE END T ONE OF SAID LOCKING MEMBERS, A FLUID PRESSURE OPERATED ACTUATING MEANS INTERCONNECTING SAID SWING ARMS AND OPERABLE TO SWING SAID ARMS TO ENGAGE THE LOCKING MEMBERS IN THE SAID SLOTS IN THE SAID PLATENS WHEN THE MOVABLE PLATEN IS IN THE SAID CLOSED POSITION, ABUTMENT MEMBERS CARRIED BY EACH OF SAID LOCKING MEMBERS AND SPACED IN SAID DIRECTION OF MOVEMENT SO THAT SAID PLATENS ARE GRIPPED BETWEEN THE SPACED ABUTMENTS ON EACH LOCKING MEMBER WHEN THE MOVABLE PLATEN IS IN A CLOSED POSITION AND SAID LOCKING MEMBERS ARE ENGAGED IN SAID SLOTS, AND IN WHICH SAID MOVABLE PLATEN COMPRISES TWO PARTS RELATIVELY MOVABLE IN THE SAID DIRECTION OF MOVEMENT OF THE MOVABLE PLATEN, AND SECOND FLUID PRESSURE MEANS OPERABLE WHEN THE SAID PLATENS ARE IN SAID CLOSED POSITION TO EFFECT RELATIVE MOVEMENT IN SAID DIRECTION OF MOVEMENT BETWEEN THE SAID RELATIVELY MOVABLE PARTS OF THE MOVABLE PLATEN TO LOCK THE PLATENS IN SAID CLOSED POSITION AND TO URGE THE SAID PLATENS AGAINST THE SAID ABUTMENT MEMBERS WITH A FORCE APPLIED TO SAID ABUTMENT MEMBERS AT RIGHT ANGLES TO THE DIRECTION OF MOVEMENT OF SAID LOCKING MEMBERS.