Flow indicating means for impositive displacement machines

Claim 1

A COMBINATION FOR MEASURING THE VOLUMETRIC FLOW OF A FLUID HANDLING MACHINE HAVING INLET MEANS IN FLUID COMMUNICATION WITH A FLUID SOURCE AND MEANS FOR VARYING THE VOLUMETRIC FLOW OF SAID MACHINE COMPRISING: MEANS FOR MOVING SAID VOLUME VARYING MEANS TO A NUMBER OF POSITIONS BETWEEN OPEN AND CLOSED POSITIONS TO VARY THE VOLUMETRIC FLOW OF SAID MACHINE; SIGNAL COMBINING MEANS; SIGNAL CONVERTING MEANS CONNECTING SAID SIGNAL COMBINING MEANS TO SAID VOLUME VARYING MEANS, SAID CONVERTING MEANS IMPOSING A SIGNAL OF PREDETERMINED MAGNITUDE ON SAID SIGNAL COMBINING MEANS FOR A PREDETERMINED POSITION OF SAID VOLUME VARYING MEANS; MEANS CONNECTING THE DISCHARGE OF SAID MACHINE TO SAID SIGNAL COMBINING MEANS, SAID CONNECTING MEANS TRANSMITTING A SIGNAL TO SAID COMBINING MEANS PROPORTIONAL TO THE DISCHARGE PRESSURE OF SAID MACHINE; AND GAUGE MEANS CONNECTED TO SAID SIGNAL COMBINING MEANS, SAID GAUGE MEANS BEING CALIBRATED TO CAUSE A PARTICULAR INDICATION OF VOLUMETRIC FLOW FOR A PARTICULAR SIGNAL FROM SAID SIGNAL COMBINING MEANS AND SAID SIGNAL COMBINING MEANS BEING CALIBRATED TO GIVE SAID PARTICULAR SIGNAL TO SAID GAUGE MEANS AS A RESULT OF RECEIVING PREDETERMINED SIGNALS FROM SAID CONNECTING MEANS AND SAID SIGNAL CONVERTING MEANS.