Continuous-feed reciprocating pump

Claim 1

A CONTINUOUS-FEED RECIPROCATING PUMP, PARTICULARLY FOR THICK MATERIALS LIKE MORTAR, COMPRISING WALL MEANS DEFINING A PUMPING SPACE INCLUDING FIRST AND SECOND OPPOSITELY DISPOSED, SERIALLY INTERCONNECTED SPACE PORTIONS, A SUCTION LINE FOR THE MATERIALS CONNECTED TO SAID FIRST SPACE PORTION, A FEEDING LINE FOR THE MATERIALS CONNECTED TO SAID SECOND SPACE PORTION AND SUPPLIED WITH THE MATERIALS FROM BOTH SPACE PORTIONS, A CONNECTING LINE FOR THE MATERIALS BETWEEN SAID SPACE PORTIONS, CHECK VALVE MEANS FOR SAID FIRST SPACE PORTION IN AT LEAST ONE OF SAID SUCTION LINE AND SAID CONNECTING LINE, SAID SECOND SPACE PORTION HAVING APPROXIMATELY HALF THE VOLUME OF SAID FIRST SPACE PORTION, FIRST AND SECOND CHAMBER MEANS FOR THE RESPECTIVE FIRST AND SECOND SPACE PORTIONS, AND RESILIENT SEPARATOR MEANS IN SAID CHAMBER MEANS FOR FORMING THEREIN RESPECTIVE FIRST AND SECOND INTERMEDIATE SPACES AND FIRST AND SECOND FEEDING SPACES OF VARIABLE VOLUMES, WHEREIN SAID CHECK VALVE MEANS IS CONSTITUTED BY TWO CHECK VALVES, ONE OF SAID CHECK VALVES BEING BETWEEN SAID SUCTION LINE AND SAID FIRST FEEDING SPACE, THE OTHER OF SAID CHECK VALVES BEING BETWEEN SAID FIRST FEEDING SPACE AND SAID CONNECTING LINE WHICH LEADS TO SAID SECOND FEEDING SPACE, WHILE SAID FEEDING LINE IS DIRECTLY LINKED TO SAID SECOND FEEDING SPACE.