Cartridge refilling device for caulking guns and the like

Claim 1

A LOADING DEVICE FOR EXTRUDING A QUANTITY OF PLASTIC MATERIAL OUT OF A CONTAINER INTO CAULKING GUN CARTRIDGES, TUBES, AND THE LIKE, HAVING AN END WALL AGAINST WHICH THE QUANTITY OF PLASTIC MATERIAL ABUTS, SAID LOADING DEVICE COMPRISING BASE MEANS ADAPTED TO SUPPORT THE CONTAINER IN A SELECTED POSITION, SUPPORT MEANS OPERATIVELY MOUNTED ON SAID BASE MEANS, SAID SUPPORT MEANS HAVING AN ELONGATED SLOT AND A PLURALITY OF STEP-ENGAGEABLE STATIONARY PROJECTIONS IN SAID SLOT, POWER TRANSFERENCE MEANS, PIVOT MEANS OPERATIVELY MOUNTED ON THE END OF SAID POWER TRANSFERENCE MEANS AND BEING SHIFTABLE IN SAID ELONGATED SLOT, SAID PIVOT MEANS BEING ENGAGEABLE WITH ANY OF SAID PLURALITY OF STEP-ENGAGEABLE PROJECTIONS FOR SHIFTING SAID POWER TRANSFERENCE MEANS TO ANY OF A PLURALITY OF VERTICALLY SPACED POSITIONS, A PISTON-LIKE MEMBER HAVING A PISTON ROD EXTENDING UPWARDLY THEREFROM, SAID PISTON ROD BEING PIVOTALLY SECURED AT A PIVOT POINT TO THE POWER TRANSFERENCE MEANS IN SUCH A MANNER THAT THE DISTANCE FROM THE PIVOT POINT TO THE PISTON-LIKE MEMBER DOES NOT VARY AS THE PIVOT MEANS ARE MADE TO ENGAGE DIFFERENT PROJECTIONS, A HOLLOW CYLINDRICAL TUBE MOUNTED ON SAID PISTON-LIKE MEMBER AND BEING SIZED TO SNUGLY BUT NEVERTHELESS SLIDABLY ENGAGE A CARTRIDGE, SAID PISTON-LIKE MEMBER HAVING AN APERTURE IN ALIGNMENT WITH SAID HOLLOW CYLINDRICAL TUBE, WHEREBY SAID CARTRIDGE CAN BE FILLED WITH PLASTIC MATERIAL WHEN