Blending and dispensing of viscous substances

Claim 1

IN APPARATUS FOR THE BLENDING AND DISPENSING OF VISCOUS SUBSTANCES OF THE TYPE INDICATED, THE COMBINATION COMPRISING AT LEAST TWO FIXED CIRCULAR PISTON MEANS HAVING EACH A FEED BORE THERETHROUGH AND FEED PIPE MEANS LEADING TO A DISPENSING OUTLET, THE DIAMETER OF THE PISTONS BEING SUCH AS TO CO-OPERATE CLOSELY WITH INTERIOR WALLS OF CYLINDRICAL CONTAINERS IN WHICH THE SUBSTANCES TO BE BLENDED ARE SUPPLIED WHEN THE CONTAINERS ARE OPENED SO THAT THE CONTAINERS SERVE AS RESERVOIRS FOR THE SUBSTANCES, DISPLACEABLE PRESSURE APPLYING MEANS LOCATED OVER AND OPPOSITE EACH CONTAINER POSITION, MEANS FOR DISPLACING SAID PRESSURE APPLYING MEANS TOWARDS SAID PISTON SO THAT WHEN THE CONTAINERS ARE PLACED AGAINST SAID PISTONS THE PRESSURE APPLYING MEANS CAN BE OPERATED TO DISPLACE THE CONTAINERS RELATIVE TO THE COOPERATING PISTONS TO CAUSE A FEED OF THE SUBSTANCES FROM THE CONTAINERS TO THE DISPENSING OUTLET, INDEPENDENT ACTUATING MEANS FOR EACH PRESSURE APPLYING MEANS DISPLACING MEANS SIMULTANEOUSLY OPERABLE TO CAUSE INDEPENDENT PRESSURE-APPLYING DISPLACEMENTS OF SAID PRESSURE APPLYING MEANS OVER INDEPENDENTLY PREDETERMINABLE DISTANCES WHICH IMPOSE THE PROPORTIONS OF THE COMPONENTS TO BE MIXED AND DISPENSED AND MEANS FOR INDEPENDENTLY ADJUSTING SAID ACTUATING MEANS TO VARY INDEPENDENTLY THE DISTANCE OVER WHICH EACH PRESSURE-APPLYING MEANS IS DISPLACED FOR EACH SIMULTANEOUS OPERATION OF SAID ACTUATING MEANS AND THEREBY TO VARY THE PROPORTIONS OF THE COMPONENTS.