Centralized rotary lubricating pump

Claim 1

A ROTARY PUMP OF A CENTRAL LUBRICANT DISTRIBUTING SYSTEM, COMPRISING A PUMP BODY HAVING A FIRST BORE EXTENDING THERETHROUGH, SAID FIRST BORE HAVING A DIAMETER AND A LONGITUDINAL AXIS, A ROTATABLE SHAFT IN SAID FIRST BORE, SAID SHAFT HAVING A LONGITUDINAL AXIS, TWO ENDS AND A PERIPHERY, MEANS TO ROTATE SAID SHAFT, SAID SHAFT FURTHER HAVING A GROOVE INTERMEDIATE THE ENDS THEREOF, SAID GROOVE BEING CRESCENT-SHAPED AND HAVING A MAXIMUM PORTION AND A MINIMUM PORTION AND BEING FORMED BY A RECESSED CYLINDRICAL PORTION OF SAID SHAFT HAVING AN AXIS OFFSET FROM THE LONGITUDINAL AXIS OF SAID SHAFT AND HAVING A PERIPHERY TANGENT TO THE PERIPHERY OF SAID SHAFT AT A POINT CORRESPONDING TO THE MINIMUM PORTION OF SAID GROOVE, SAID GROOVE AND SAID FIRST BORE FORMING A PUMP COMPARTMENT, A SECOND BORE HAVING A LONGITUDINAL AXIS TRANSVERSE TO THE AXIS OF SAID FIRST BORE AND LEADING TO SAID PUMP COMPARTMENT, A VANE RECIPROCATABLE IN SAID BORE AND HAVING A BOTTOM END EXTENDING INTO SAID GROOVE, A SPRING BIASING SAID VANE IN THE DIRECTION OF SAID GROOVE AND MAINTAINING SAID BOTTOM END IN CONTINUOUS CONTACT WITH THE PERIPHERY OF SAID RECESSED PORTION OF SAID SHAFT TO DIVIDE SAID PUMP COMPARTMENT INTO TWO SEPARATE CHAMBERS, AN INLET PASSAGEWAY COMMUNICATING WITH ONE OF SAID CHAMBERS, AN OUTLET PASSAGEWAY COMMUNICATING WITH THE OTHER OF SAID CHAMBERS, SAID INLET AND OUTLET PASSAGEWAYS EACH HAVING A SMALLER DIAMETER THAN SAID FIRST BORE AND EACH HAVING A LONGITUDINAL AXIS TRANSVERSE TO THE AXIS OF SAID FIRST BORE AND TO THE AXIS OF SAID SECOND BORE, THE UPPER PORTION OF THE PUMP BODY WALL DEFINING EACH OF SAID INLET AND OUTLET PASSAGEWAYS BEING IN LINE WITH THE BOTTOM END OF SAID VANE WHEN SAID BOTTOM END IS IN CONTACT WITH THE PERIPHERY OF SAID RECESSED CYLINDRICAL PORTION OF SAID SHAFT AT THE MAXIMUM PORTION OF SAID GROOVE, AND THE LOWER PORTION OF THE PUMP BODY WALL DEFINING EACH OF SAID INLET AND OUTLET PASSAGEWAYS SUBSTANTIALLY COINCIDING WITH THE AXIS OF SAID FIRST BORE.