Readily dismountable reciprocating pump assembly

Claim 1

IN A PUMP HAVING A CYLINDER BLOCK WITH A BORE OPENING THERETHROUGH AND HAVING INLET AND OUTLET PORTS EXTENDING LATERALLY IN SAID BLOCK FROM THE SIDES OF SAID BORE, THE COMBINATION THEREWITH OF A CLOSED END PUMP SLEEVE WITHIN SAID BORE AND HAVING AN EXTERNALLY THREADED PORTION AT THE OPPOSITE END THEREOF EXTENDING OUT OF SAID CYLINDER BLOCK, SAID SLEEVE HAVING A LONGITUDINAL BORE EXTENDING FROM SAID CLOSED END AND OUT OF THE EXTERNALLY THREADED OPPOSITE END OF SAME, MEANS AT THE CLOSED END OF SAID SLEEVE FOR PULLING SAME ENDWISE AND WHEN TIGHTENED HOLDING SAME FIXED RELATIVE TO THE MOVEMENT OF THE CLOSED END PORTION OF SAID SLEEVE FURTHER INTO SAID BORE, SAID OPEN END PORTION OF SAID SLEEVE BEING COUNTERBORED, PACKING AND PACKING COMPRESSION SLEEVE MEANS IN SAID COUNTERBORE, AN INTERNALLY THREADED CAP THREADEDLY ENGAGING THE EXTERNAL THREADS ON THE OPEN END OF SAID SLEEVE, SAID CAP HAVING AN OUTER END MEANS ENGAGING THE OUTER END OF SAID COMPRESSION SLEEVE MEANS SO THAT TIGHTENING SAID CAP AGAINST SAID COMPRESSION SLEEVE MEANS WILL COMPRESS SAID PACKING, SAID CAP ALSO INCLUDING MEANS SERVING AS AN ENDWISE MOVEMENT STOP IN ABUTMENT WITH SAID BLOCK FOR SAID SLEEVE WHEN SAID PULLING MEANS AT THE CLOSED END OF THE LATTER IS TIGHTENED WITH SAID CAP IN PLACE ON SAID SLEEVE A PLUNGER MOVABLE BACK AND FORTH WITHIN SAID SLEEVE DURING PUMPING OPERATION, SAID PACKING IN SAID SLEEVE FORMING A SEAL WITH SAID PLUNGER, INLET AND OUTLET PORTS IN SAID SLEEVE SUBSTANTIALLY AT OPPOSITE SIDES OF SAME AND ADJACENT SAID CLOSED END THEREOF, MEANS HOLDING SAID SLEEVE SO THAT THE INLET AND OUTLET PORTS OF SAME ARE ALINED WITH AND IN COMMUNICATION WITH SAID INLET AND OUTLET PORTS OF SAID CYLINDER BLOCK, INLET AND OUTLET VALVES IN SAID INLET AND OUTLET PORTS OF SAID CYLINDER BLOCK, AND MEANS FOR HOLDING SAME IN OPERABLE POSITION.