Air Injection Means Extending Through Bath Patents (Class 65/192)
  • Equipment and method for manufacturing thin glass flakes
    Patent number: 4526602
    Abstract: A blow-pipe 1 with an upper end 2 shaped to retain a working amount of molten glass is vertically movable from beneath the surface of molten glass 9 in a furnace to an upper position within orifice 10a of cover plate 10 and just below a cylindrical guide tube 11. Upward movement brings the blow-pipe generally into a hotter environment, expands the internal air and thus provides an initial bubble at the blow-pipe end. This is progressively expanded into the guide tube, preferably by two-stage air supply at different pressures, to produce a constrained glass bubble, of a few microns thickness.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: July 2, 1985
    Inventors: Pavao Pavlovic, Branko Gnjidic
  • Crucible for the production of single-material light-guiding fibers
    Patent number: 4131447
    Abstract: A method for the production of single-material light-guiding fibers which have a core supported in a glass sheath in a cantilever manner by glass webs characterized by providing a crucible having an exit nozzle with an opening having a configuration of the cross section of the light-guiding fiber with a core portion connected by web portions to a surrounding annular portion, providing molten material of the light-guiding fiber in the crucible, drawing the molten material from the crucible through the exit nozzle to form a continuous integral workpiece having a core portion supported in a glass sheath in a cantilever manner by integral glass webs and continuously drawing the integral workpiece into the single-material light-guiding fiber. The crucible is formed by a pair of hollow bodies supported in an outer cylindrical member in a cantilever manner so that the cylindrical member and the pair of hollow bodies form the exit nozzle with the desired configuration.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: December 26, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hubert Aulich, Josef Grabmaier
  • Method and apparatus for making continuous foam glass product
    Patent number: 4038063
    Abstract: A continuous process for the manufacture of cellular ceramic product. Ceramic feed material is transported successively through a preheat kiln section, through a foaming section whereat foaming agent mixed with the ceramic feed material is activated, and into a drawing kiln section. An elongate hollow product can be formed by drawing the foamed ceramic while soft around and past a hollow mandrel to form an elongate hollow cylindrical member.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: July 26, 1977
    Assignee: E. C. P., Inc.
    Inventors: Tudor Williams, John D. Bost
  • Method of making glass tubes
    Patent number: 3937623
    Abstract: A method of making glass tubes in which forced cooling of the tube is effected from the inside thereof in an annealing section of a tube fabricating plant.
    Type: Grant
    Filed: July 25, 1973
    Date of Patent: February 10, 1976
    Inventors: Vasily Porfirovich Kononko, Konstantin Timofeevich Bondarev, Alexandr Alexandrovich Krivokon, Nikolai Nikiforovich Kovshar, Ljudmila Mikhailovna Ivanova, Elena Gavrilovna Frolova, Nikolai Antonovich Shestak, Nikolai Leontievich Shevchenko