Centrifugal impregnating process of making a pressure tank

Claim 1

A PROCESS FOR FABRICATING A TANK WHICH COMPRISES DISPOSING TWO SUBSTANTIALLY RIGID PRESSURE HEADS HAVING EDGES OF UNIMPREGNATED POROUS MATERIAL AND A ROLL OF UNIMPREGNATED POROUS MATERIAL WITHIN A ROTABLE MEMBER HAVING AN INSIDE SURFACE, WITH THE SAID PRESSURE HEADS FACING EACH OTHER AND THE SAID ROLL OF AMTERIAL DISPOSED BETWEEN THE PRESSURE HEADS SO THAT EACH END OF THE ROLL OVERLAPS THE EDGE OF A RESPECTIVE PRESSURE HEAD, ROATING THE MEMBER SO THAT THE CENTRIFUGAL FORCE CREATED CAUSE THE ROLL OF AMTERIAL TO UNWIND AND CONFORM TO THE INSIDE SURFACE OF THE MEMBER WITH THE ENDS OF THE INSIDE ROLL OVERLAPPING THE UNIMPREGNATED EDGES OF THE RESPECTIVE PRESSURE HEADS AND WITH THE MATERIAL OF THE EXPANDED ROLL OVERLAPPING ITSELF, INTRODUCING A RESINOUS SUBSTANCE INSIDE THE ROATING MEMBER AND THE ROLL OF MATERIAL SO THAT THE CENTRIFUGAL FORCE CAUSES THE RESINOUS SUBSTANCE TO IMPREGNATE THE BLUK OF THE UNIMPREGNATED POROUS MATERIAL, AND HARDENING THE RESINOUS SUBSTANCE TO MAKE THE MATERIAL RIGID AND TO BOND THE OVERLAPPING PORTIONS OF THE MATERIAL TOGETHER.