Hot melt applicator

Claim 1

APPARATUS FOR SUPPLYING ADHESIVE TO A TRANSFER ROLL COMPRISING A BLOCK INTO WHICH A PAIR OF THE TRANSFER ROLL IS RECESSED AND FROM WHICH ANOTHER PART PROJECTS, SAID BLOCK CONTAINING A CHAMBER FOR HOLDING MOLTEN ADHESIVE, ROTORS IN THE CHAMBER ROTATABLE IN DIRECTIONS AWAY FROM EACH OTHER AT THE TOP OF THE CHAMBER AND TOWARD EACH OTHER AT THE BOTTOM OF THE CHAMBER, AN OUTLET PASSAGE AT THE BOTTOM OF THE CHAMBER EXTENDING FROM THE BOTTOM OF THE CHAMBER TO THE PORTION OF THE TRANSFER ROLL RECESSED INTO THE BLOCK, A VALVE IN SAID PASSAGE, MEANS FOR EFFECTING CONTINUOUS ROTATION OF THE TRANSFER ROLL, OTHER MEANS FOR EFFECTING ROTATION OF THE ROTORS, SAID CHAMBER, ROTORS, PASSAGE, VALVES, RECESS AND ROLL BEING MAINTAINED AT A SUBSTANTIALLY UNIFORM TEMPERATURE BY MEANS OF HEATING ELEMENTS MOUNTED IN THE BLOCK IN SPACED CONFRONTING RELATION TO SAID COMPONENTS AND TO EACH OTHER, A WORK-FEEDING ROLL SUPPORTED FOR MOVEMENT FROM AN INOPERATIVE POSITION BELOW THE TRANSFER ROLL TO AN OPERATIVE POSITION IN WHICH ITS HOLDS THE WORK AGAINST THE TRANSFER ROLL, A TREADLE FOR