Abstract: A process for the distribution of a powder for coating glass, whereby a regular, homogeneous coating of uniform thickness is formed, wherein the powder is converted into a metal oxide or oxides upon contact with hot glass, which comprises spraying a powder onto said glass, wherein said powder comprises: (a) a composition which is capable of being converted into a metal oxide or oxides upon contact with hot glass, and (b) a water-repellent, anhydrous product having a base of finely-divided silica.The product with a base of finely-divided silica is added in the amount of about 0.5 to 5%, by weight, based on the total powder weight.

Abstract: The invention is in a pneumatic powder ejector comprising a suction stage and an injection stage. The suction stage includes a suction chamber (16), a venturi (14) communicating a primary gas to the suction chamber and a lateral suction input (18) offset in relation to the downstream and of the venturi. The injection stage includes a nozzle (22), an injection chamber (36) and a diffuser (38). The stages are located within and coaxially of the body of a tubular ejector. The nozzle includes a path for powder and primary gas between the suction chamber and diffuser, and is formed to provide a flow path of reduced dimension to communicate a secondary or entrainment gas between the diffuser and injection station.

Abstract: A process for the distribution of a powder for coating glass, whereby a regular, homogeneous coating of uniform thickness is formed, wherein the powder is converted into a metal oxide or oxides upon contact with hot glass, which comprises spraying a powder onto said glass, wherein said powder comprises: (a) a composition which is capable of being converted into a metal oxide or oxides upon contact with hot glass, and (b) a water-repellent, anhydrous product having a base of finely-divided slica.The product with a base of finely-divided silica is added in the amount of about 0.5 to 5%, by weight, based on the total powder weight.

Abstract: A method and apparatus are described for coating a substrate such as glass with a powder such as a compound that can be decomposed by heat. The method comprises the steps of forming a sheet of powder suspended in a gas moving toward the substrate to be coated, homogenizing the mixture of powder and gas by creating turbulences in it, and accelerating the sheet in the direction of the substrate with flowing gas having greater velocity than that of the sheet. This method and the apparatus which implements it are particularly useful in the manufacture of glass coated with a film such as metal oxide.

Abstract: The invention is in a pneumatic powder ejector comprising a suction stage and an injection stage. The suction stage includes a suction chamber (16), a venturi (14) communicating a primary gas to the suction chamber and a lateral suction input (18) offset in relation to the downstream end of the venturi. The injection stage includes a nozzle (22), an injection chamber (36) and a diffuser (38). The stages are located within a coaxially of the body of a tubular ejector. The nozzle includes a path for powder and primary gas between the suction chamber and diffuser, and is formed to provide a flow path of reduced dimension to communicate a secondary or entrainment gas between the diffuser and injection station.

Abstract: The invention is in a pneumatic powder ejector comprising a suction stage and an injection stage. The suction stage includes a suction chamber (16), a venturi (14) communicating a primary gas to the suction chamber and a lateral suction input (18) offset in relation to the downstream and of the venturi. The injection stage includes a nozzle (22), an injection chamber (36) and a diffuser (38). The stages are located within and coaxially of the body of a tubular ejector. The nozzle includes a path for powder and primary gas between the suction chamber and diffuser, and is formed to provide a flow path of reduced dimension to communicate a secondary or entrainment gas between the diffuser and injection station.

Abstract: A glass sheet suitable for use as the panoramic roof of a motor vehicle is disclosed, the sheet being comprised of a tinted glass coated with a network of enamel patterns which reduce the light and energy transmission factor of the formed glass. The glass may optionally include a thin semireflective layer deposited on one side of the glass. Preferably, the light transmission factor and energy transmission factor of the coated glass sheet are approximately equal, and below 30%.

Abstract: A method and apparatus are described for coating a substrate such as glass with a powder such as a compound that can be decomposed by heat. The method comprises the steps of forming a sheet of powder suspended in a gas moving toward the substrate to be coated, homogenizing the mixture of powder and gas by creating turbulences in it, and accelerating the sheet in the direction of the substrate with flowing gas having greater velocity than that of the sheet. This method and the apparatus which implements it are particularly useful in the manufacture of glass coated with a film such as metal oxide.

Abstract: There is disclosed a flotation furnace for manufacturing glass ribbon and an apparatus for extracting the glass ribbon from the furnace. The apparatus includes a case with extraction rollers positioned therein. The case has an opening for receiving the glass ribbon from the furnace, an opening for exiting the glass ribbon from the case, and an opening for discharging combustion gases. The case may include a carriage which moves transverse to the flow of the glass ribbon.

Abstract: A method and apparatus are disclosed for manufacturing glass ribbon by pouring molten glass onto a bath of molten metal. A portion of the molten metal is withdrawn from the molten bath underneath the molten glass, upstream from the location at which the molten glass forms the glass ribbon. The withdrawn molten metla is entrained by a reducing gas, and heated. The molten metal and reducing gas are introduced into the molten metal bath generally at a side region of the bath.

Abstract: A method and apparatus are disclosed for manufacturing glass ribbon by pouring molten glass onto a bath of molten metal. As the glass ribbon advances along the length of the molten metal bath, the edges of the glass ribbon are simultaneously guided and cooled. Guide members positioned within the tank simultaneously guide the advancing glass ribbon by a thrust bearing and cool the edges of the glass ribbon by cooling means. The thrust bearing is separated from the cooling means by thermal insulating means.