A METHOD TO FUSE TOGETHER TWO TUBULAR PIECES OF A THERMOPLASTIC MATERIAL AND AN APPARATUS TO CARRY IT OUT.

摘要

An apparatus to fuse together two tubular places of a thermoplastic material comprising two cylindrical metal dies of unequal diameters, each coated with a unsticking composition, the dia with the lesser diameter to hold removably the tubular piece of greater diameter externally to itself and the die with the greater diameter to hold removably the tubular piece of the lesser diameter internally to itself, the two dies sandwiching between themselves an electric heater element encased in a metal housing and a chamber provided with air-holes located at the bottom thereof.