Cylinder head arrangements

Claim 1

IN A CYLINDER HEAD ARRANGEMENT, THE COMBINATION OF A CYLINDER LINER; A CYLINDER LINER HOLD DOWN MEMBER ENGAGED WITH SAID LINER; FIRST PACKING MEANS SURROUNDING SAID LINER FOR PACKING SAID LINER; SECOND PACKING MEANS SURROUNDING SAID HOLD DOWN MEMBER FOR PACKING THE HOLD DOWN MEMBER; MEANS FOR ENERGIZING SAID FIRST AND SECOND PACKING MEANS AND INCLUDING A PACKING ENERGIZER DISPOSED IN FRONT OF SAID HOLD DOWN MEMBER, SAID PACKING ENERGIZER HAVING A CENTRALLY-LOCATED, AXIALLY-EXTENDING, INTERNALLYTHREADED BORE; A CYLINDER HEAD HAVING A CENTRALLY LOCATED, AXIALLY EXTENDING, INTERNALLY THREADED BORE; A FIRST SCREW MEMBER COMPRISING A TUBULAR BODY HAVING AN EXTERNALLY THREADED PORTION SCREWED INTO SAID THREADED BORE OF SAID CYLINDER HEAD, AN AXIALLY EXTENDING BORE, AND A REARWARDLY FACING SURFACE; AND A SECOND SCREW MEMBER HAVING A SHANK EXTENDING THROUGH SAID BORE OF SAID FIRST SCREW MEMBER, A THRUST COLLAR ENGAGING SAID SURFACE OF SAID FIRST SCREW MEMBER, AN EXTERNALLY THREADED PORTION SCREWED INTO SAID THREADED BORE OF SAID ENERGIZER, AND A REARWARDLY FACING SURFACE ABUTTING SAID HOLD DOWN MEMBER; SAID FIRST SCREW MEMBER EXERTING ON SAID COLLAR A FORCE WHICH, ACTING THROUGH SAID HOLD DOWN MEMBER, IS SUFFICIENT TO HOLD DOWN SAID LINER AND, ACTING THROUGH SAID ENERGIZER, IS SUFFICIENT TO ENERGIZE SAID FIRST AND SECOND PACKING MEANS.