Axially-operated hand grease gun

Claim 1

IN A HAND GREASE GUN FOR USE WITH CARTRIGE-PACKAGED OF PRESSURE-FILLED GREASE, SAID GUN INCLUDING AN ELONGATED CYLINDRICAL GREASE CONTAINER, A PLUNGER ROD AXIALLY DISPOSED WITHIN SAID CONTAINER FOR AXIAL RECIPROCATION THEREIN, SAID ROD HAVING A REARWARD PORTION SLIDABLY PROJECTING THROUGH SAID REAR CAP TO A POINT REWARDLY THEREOF, AN ACCESS CAP REMOVABLY MOUNTED ON THE FRONT END OF SAID CONTAINER, A HIGH PRESSURE CYLINDER MOUNTED ON SAID ACCESS CAP PROVIDING A REARWARDLY OPENING BORE ALIGNED WITH THE AXIS OF SAID CYLINDER, A PISTON GUIDE SECURED TO SAID HIGH PRESSURE CYLINDER AND FORMING A REARWARD EXTENSION THEREOF, SAID GUIDE PROVIDING A BORE ALIGNED WITH THE BORE OF SAID CYLINDER, PISTON MEANS PROVIDED ON THE FORWARD END OF SAID PLUNGER ROD FOR RECIPROCATION IN SAID GUIDE AND CYLINDER, THE COMBINATION THEREWITH OF: (A) A STATIONARY HAND GRIP MOUNTED ON THE OUTSIDE OF SAID CLOSURE CAP AND EXTENDING LATERALLY THEREFROM WITHOUT INTERFERING WITH THE SLIDING ACTION OF REARWARD PORTION OF SAID ROD WHICH EXTENDS THROUGH THE CAP; (B) MOVABLE HAND GRIP MEANS PIVOTALLY CONNECTED TO THE PROJECTING REAR END OF SAID ROD FOR COOPERATION WITH SAID STATIONARY HAND GRIP TO RECIPROCATE SAID ROD WITHIN SAID PISTON GUIDE AND HIGH PRESSURE CYLINDER, SAID MOVABLE HAND GRIP COMPRISING THE ONLY MEANS FOR MOVING AND RECIPROCATING SAID ROD; AND (C) GREASE PLUNGER MEANS SLIDABLY MOUNTED ON SAID ROD FOR URGING GREASE TOWARD THE FORWARD END OF SAID GREASE CONTAINER, SAID PLUNGER MEANS BEING SLIDABLY RETRACTABLE ON SAID ROD TO THE REARWARD PORTION OF SAID CONTAINER BY THE INTRODUCTION OF A CARTRIDGE OF GREASE OR OF PRESSURE-FILLED BULK GREASE INTO THE FORWARD PORTION THEREOF WHILE SAID ROD REMAINS STATIONARY.