Method of making terminal bushings

Claim 1

IN THE PROCESS OF PREPARING A UNITARY LAMINATED TERMINAL BUSHING OF A RESINOUS COMPOSITION INCLUDING A CENTRALLY-DISPOSED CONDUCTOR STUD, THE STEP COMPRISING FORMING A PLURALITY OF COOPERABLE TUBES OF GRANDUATED DIAMETERS OF A RESINOUS MATERIAL IN A MANNER TO PROVIDE TUBES OF SUBSTANTIALLY UNIFORM WALL THICKNESS AND SUBSTANTIALLY UNIFORM DIELECTRIC STERENTH, HEATING THE SEVERAL TUBES OF RESINOUS MATERIAL TO THERMOSET THE TUBES TO A SOLID AND SHRINK THE TUBES WHEREBY THE FURTHER SUBSTANTIAL SHRINKAGE OCCURS DURING THE REMAINING STEPS OF THE PROCESS, WRAPPING CONDUCTING SCREENING ABOUT SEVERAL OF SAID TUBES, DISPOSING THE TUBES TOGETHER CONCENTRICALLY, INTRODUCING INTO THE ANNULAR SPACES BETWEEN THE TUBES A LIQUID THERMOSETTABLE COMPOSITION WHICH FLOWS THROUGH THE MESH OF THE SCREENING AND ADHERES TO THE INNER AND OUTER WALLS OF THE TUBES, AND CURING THE LAST-MENTIONED COMPOSITION.