Stream feeder and method of making same

871,907. Making nozzles; welding by pressure. OWENS-CORNING FIBERGLAS CORPORATION. March 17, 1959 [March 18, 1958], No. 9252/59. Classes 83 (2) and 83 (4). [Also in Group XXIII] An orificed stream feeder for the formation of glass or like fibres has tubular nozzles 14 or 70 inserted into openings in the bottom wall 12 or 121 of the feeder, each nozzle being formed with a flange 22 or 74 which is electrically welded to the wall 12 or 121 by the arrangement shown in Fig. 3. The wall 12 or 121 and the nozzles 14 or 70 are of platinum or platinum alloyed with rhodium or iridium. The wall 12 is supported on a jig 50 of copper or like conducting metal having openings registering with the openings in the wall 12 for the nozzles 14 and positioned on a copper platen 34 by a pin passing through an opening 60 in the platen 34 with a tenon 64 extending into one of the openings in the jig 50. The electrode 46 of copper or like metal is supported in a threaded bore 44 of a holder 42 connected to the piston of a cylinder 40, fluidoperated for reciprocation of the electrode 46. The electrode 46 has an interior chamber 47 connected by a passage 48 for a supply of coolant. The lower end of the electrode 46 has a nozzle contacting portion 54 joined to the remainder by a conical-shaped portion 56 so that current flow to the engaging surface 54 is facilitated, the holder 42 being connected to conductors (not shown). Suitable regulating controls are incorporated.