POLYMER

SAFETY DEVICES OF THE TYPE INCORPORATING A MERCURY SWITCH WHICH HAS TO BE MOVED OUT OF THE WAY BEFORE ACCESS CAN BE HAD TO CERTAIN MACHINERY, THE MERCURY SWITCH BEING ELECTRICALLY CONNECTED SO AS TO STOP THE MACHINERY; PARTS OF THE FOREGOING

PLASTIC PROCESSING MACHINERY; INJECTION MOLDING MACHINES; THERMOSET MOLDING MACHINES; VIBRATORS FOR SEPARATING MOLDED PARTS FROM SCREWS; CONVEYORS FOR CONVEYING PLASTIC PARTS COMING OUT OF A MOLDING MACHINE; AIR OR VACUUM OPERATED CONVEYORS FOR CONVEYING PLASTIC PELLETS FROM A STORAGE CONTAINER TO A MACHINE WHERE THE PELLETS ARE PROCESSED; GRINDERS FOR GRINDING UP PLASTIC MATERIAL; PARTS OF THE FOREGOING