Lubricator assembly

Claim 1

A LUBRICATOR FOR INSERTION IN AN AIR LINE FOR THE INTRODUCTION THEREIN OF A CONTROLLED AMOUNT OF LUBRICANT COMPRISING: A FIRST SECTION INCLUDING A PASSAGE HAVING AN INLET AND AN OUTLET FOR CONNECTION TO THE UPSTREAM AND DOWNSTREAM SIDES, RESPECTIVELY, OF AN AIR LINE, GENERATOR MEANS IN SAID LUBRICATOR COMMUNICATING WITH SAID PASSAGE AND CONSTRUCTED TO DELIVER AN AMOUNT OF LUBRICANT TO THE OUTLET DEPENDENT UPON A SELECTED PRESSURE DIFFERENTIAL IN SAID PASSAGE, AIR FLOW CONTROL MEANS IN SAID PASSAGE MOVABLE BY AIR PRESSURE IN THE PASSAGE TO VARY AIR FLOW THERETHROUGH AND MEANS FOR ADJUSTING ITS RESISTANCE TO MOVEMENT TO ESTABLISH SELECTED PRESSURE DIFFERENTIALS BETWEEN SAID INLET AND OUTLET NOTWITHSTANDING VARIATIONS IN THE RATE AND PRESSURE OF AIR FLOWING THROUGH THE PASSAGE; A SECOND SECTION DEFINING A LUBRICANT SUPPLY RESERVOIR SEPARATED FROM SAID GENERATOR MEANS BY A PARTITION AND INCLUDING A LUBRICANT SUPPLY TUBE COMMUNICATING WITH SAID GENERATOR MEANS AND A CLOSABLE ACCESS COMMUNICATING WITH SAID RESERVOIR FOR FILLING THEREOF, AND VALVE MEANS IN SAID PARTITION BETWEEN SAID GENERATOR MEANS AND SAID RESERVOIR OPERATIVE TO ESTABLISH COMMUNICATION THEREBETWEEN WHEN THE RESERVOIR IS CLOSED AND TO CLOSE OFF SAID COMMUNICATION WHEN THE RESERVOIR IS OPEN TO THE ATMOSPHERE.