Means for injecting a liquid additive into another liquid

Claim 1

PROPORTIONING APPARATUS COMPRISING A FIRST CONDUIT FOR THE MOVING OF LIQUID, FLOW METER IN SAID CONDUIT HAVING A CONTACT-MAKING DEVICE ACTUATED THEREBY IN RESPONSE TO THE FLOW OF LIQUID THROUGH SAID CONDUIT, AN ADDITIVE INJECTION LINE FEEDING IN TO SAID CONDUIT FOR THE INJECTION OF AN ADDITIVE THERTO, A 3-WAY VALVE IN SAID INJECTION LINE, A PUMP IN SAID INJECTION LINE POSITIONED UPSTREAM FROM SAID VALVE, A BYPASS CONNECTED TO SAID VALVE, SAID VALVE NORMALLY BEING OPEN TO SAID BYPAS SO AS TO PERMIT THE PUMP TO OPERATE CONTINUOUSLY ALTHOUGH THE INJECTION LINE IS OPENED ONLY INTERMITTENTLY, A SOLENOID FOR ADJUSTING SAID VALVE SO AS TO CLOSE OFF SAID BYPASS AND PERMIT THE FLOW OF ADDITIVE INTO SAID INJECTION LINE, A TIME DELAY DEVICE GOVERNING SAID SOLENOID, A PAIR OF ELECTRICAL CIRCUITS CONNECTING SAID TIME DELAY DEVICE AND THE CONTACT-MAKING DEVICE ON SAID FLOW METER FOR ALTERNATELY ENERGIZING SAID DEENERGIZING SAID TIME DELAY DEVICE AND ASSOCIATED SOLENOID TO ALTERNATELY TURN SAID VALVE TO THE INJECTOR POSITION AND BYPASS POSITION, A SWITCH IN ONE OF SAID CIRCUITS OPERATED INTERMITTENTLY BY SAID CONTACT-MAKING DEVICE UPON FLOW OF A PREDETERMINED QUANTITY OF LIQUID THROUGH SAID METER, THE CLOSING OF SAID SWITCH ENERGIZING THE VALVE-ACTUATING SOLENOID TO PERMIT ADDITIVE INJECTION FOR A PREDETERMINED TIME IRRESPECTIVE OF THE REOPENING OF THE SWITCH, THE SOLENOID BEING DEENERGIZED AT THE EXPIRATION OF THIS TIME BY OPERATION OF THE TIME DELAY DEVICE.