Airline lubricator

Claim 1

IN AN AIRLINE LUBRICATOR, A BODY HAVING A MAIN PASSAGE THERETHROUGH WHICH INCLUDES INLET AND OUTLET OPENINGS, MEANS ON SAID BODY DEFINING A RESERVOIR FOR OIL, A REMOVABLE CAP MOUNTED ON SAID BODY IN A FIRST FIXEDLY SECURED POSITION, SAID CAP HAVING FIRST, SECOND, AND THIRD CHAMBERS THEREIN, A FOURTH CHAMBER FORMED BETWEEN SAID BODY AND CAP, A FIRST PASSAGE IN SAID BODY CONNECTING SAID INLET OPENING WITH SAID FIRST CHAMBER, A SECOND PASSAGE IN SAID BODY CONNECTING SAID OUTLET OPENING WITH SAID SECOND CHAMBER, A THIRD PASSAGE IN SAID CAP CONNECTING SAID SECOND AND THIRD CHAMBERS, A FOURTH PASSAGE IN SAID CAP CONNECTING SAID FIRST AND FOURTH CHAMBERS, CONDUIT MEANS CONNECTING SAID RESERVOIR WITH SAID THIRD PASSAGE, A FIFTH PASSAGE IN SAID BODY IN COMMUNICATION WITH SAID FOURTH CHAMBER AND SAID RESERVOIR, SAID FIRST AND SECOND PASSAGES AND SAID FIRST AND SECOND CHAMBERS BEING SYMMETRICALLY LOCATED ON OPPOSITE SIDES OF AN AXIS THROUGH SAID BODY AND CAP WHEREBY SAID CAP MAY BE ROTATED ABOUT SAID AXIS TO A SECOND FIXEDLY SECURED POSITION IN WHICH SAID FIRST PASSAGE COMMUNICATES WITH SAID SECOND CHAMBER AND SAID SECOND PASSAGE COMMUNICATES WITH SAID FIRST CHAMBER.