Adhesive applying device

Claim 1

IN A PACKAGING MACHINE, IN COMBINATION, CONVEYING MEANS FOR SUPPORTING AND CONTINUOUSLY ADVANCING FILLED CARTONS HAVING THEIR TOP FLAPS ARRANGED TO RECEIVE ADHESIVE, ADHESIVE APPLYING MEANS FOR APPLYING A HOT MELT ADHESIVE TO SELECTED OF SAID FLAPS DURING THE CONTINUOUS MOVEMENT OF SAID CARTONS, SAID ADHESIVE APPLYING MEANS COMPRISING A CONTINUOUSLY ROTATED AND HEATED ADHESIVE APPLYING ROLL, A HEATED SUPPLY CHAMBER CONTAINING A SUPPLY OF MELTED ADHESIVE, MEANS FOR TRANSFERRING THE MELTED ADHESIVE FROM THE SUPPLY CHAMBER TO THE APPLYING ROLL FOR APPLICATION TO SAID CARTON FLAPS, A HEATED MELTING CHAMBER HAVING A PERFORATED BOTTOM WALL IN COMMUNICATION WITH SAID SUPPLY CHAMBER MEANS FOR FEEDING HOT MELT ADHESIVE IN SOLID FORM TO SAID MELTING CHAMBER TO MELT AND FLOW INTO SAID SUPPLY CHAMBER, AND CONTROL MEANS INCLUDING MEANS FOR DETECTING A DEPLETION IN THE AMOUNT OF ADHESIVE IN SAID SUPPLY CHAMBER, AND MEANS RESPONSIVE TO SAID DETECTING MEANS FOR ACTUATING SAID FEEDING MEANS TO RESTORE THE AMOUNT OF ADHESIVE IN SAID SUPPLY CHAMBER, SAID FEEDING MEANS COMPRISING A VIBRATORY FEEDER HAVING A VIBRATORY MOTOR, A CIRCUIT FOR SAID VIBRATORY MOTOR, SAID CONTROL MEANS INCLUDING A NORMALLY OPEN SWITCH IN SAID CIRCUIT ARRANGED TO BE CLOSED UPON DETECTION OF A DEPLETIN IN THE AMOUNT OF ADHESIVE IN SAID SUPPLY CHAMBER, A RELAY CONTROLLED MAIN MOTOR CIRCUIT FOR THE PACKAGING MACHINE, AND NORMALLY OPEN CONTACTS IN SAID VIBRATORY MOTOR CIRCUIT ARRANGED TO BE CLOSED WHEN THE MAIN MOTOR CIRCUIT IS ENERGIZED, AND A MANUALLY OPERATED SWITCH BY-PASSING SAID NORMALLY OPEN MAIN MOTOR CIRCUIT CONTACTS FOR ENERGIZING SAID VIBRATORY MOTOR CIRCUIT INDEPENDENTLY OF SAID MAIN MOTOR CIRCUIT.