Variable quantity cream dispenser

Claim 1

APPARATUS FOR DISPENSING A DESIRED QUANTITY OF LIQUID WHICH IS SUPPLIED FROM A SOURCE HAVING A VARIABLE PRESSURE HEAD, COMPRISING A FRAME, A LIQUID DELIVERY CONDUIT MEANS ON THE FRAME AND INCLUDING A DISCHARGE PORT, A VALVE ELEMENT MEANS CONTROLLING LIQUID DISCHARGED THROUGH THE PORT, A LIQUID SUPPLYING MEANS ADAPTED FOR CONNECTION WITH THE SOURCE OF LIQUID IN LIQUID FLOW COMMUNICATING RELATION AND SUPPLYING A MEASURED QUANTITY OF LIQUID INTO THE CONDUIT MEANS TO THE VALVE ELEMENT MEANS, ACTUATING MEANS OPERATING SAID VALVE ELEMENT MEANS TO OPEN AND CLOSE THE PORT, CIRCUIT MEANS CONTROLLING SAID ACTUATING MEANS, AND SAID CIRCUIT MEANS INCLUDING A SWITCH ON THE FRAME AND HAVING FIRST AND SECOND OPERABLE POSITIONS RESPECTIVELY RETAINING SAID PORT IN OPEN CONDITION AND PRODUCING OPERATION OF SAID ACTUATING MEANS TO CLOSE THE PORT, AN ADJUSTABLE STOP MOVABLY MOUNTED ON THE FRAME AND SPACED FROM THE SWITCH AND BEING ADJUSTABLE TO VARY THE SPACING THEREFROM TO THE SWITCH, MEANS CONNECTED WITH THE STOP FOR ADJUSTING THE SAME, A MOVABLE SWITCH-OPERATING ELEMENT ON THE FRAME AND DISPOSED BETWEEN THE STOP AND SWITCH FOR SEQUENTIAL ENGAGEMENT THEREWITH, DRIVE MEANS CONNECTED WITH AND MOVING THE SWITCH-OPERATING ELEMENT AT A CONSTANT SPEED FROM THE STOP AND TOWARD THE SWITCH TO OPERATE THE SWITCH AND EFFECT OPERATION OF SAID ACTUATING MEANS AND CLOSING OF THE PORT AFTER A PREDETERMINED PERIOD DEPENDING UPON THE SPACING BETWEEN THE STOP AND THE SWITCH, AND MEANS RESPONSIVE TO MOVEMENT OF SAID VALVE ELEMENT MEANS INTO PORT-OPENING POSITION AND COMMENCING OPERATION OF SAID DRIVE MEANS TO MOVE THE SWITCH OPERATING ELEMENT TOWARD THE SWITCH, AND SAID CIRCUIT MEANS ALSO STOPPING SAID DRIVING MEANS WHEN THE SWITCH IS OPERATED TO EFFECT CLOSING OF THE PORT, SAID DRIVING MEANS ALSO RETURNING THE SWITCH OPERATING ELEMENT AGAINST THE STOP.