VITREOUS ENAMELING 23 



774,491. Charles F. Pfalzgraf. Enameling metal. Nov. 8, 1904. (113, 



425). 



779655 . Julius F. Kenkel. Manufacture of enamel ware. Jan. 10, 1905. 

 (114,388). 



The plate is coated with a preparation of enamel, burned, the plate then 

 slushed in an enamel preparation and the enamel evenly distributed by a blast 

 of air. 



793.659. Otto L. Heintz. Enameled ornament. July 4, 1905. (117, 



14). 



804,010. Julius F. Kenkel. Enameling. Nov. 7, 1905. (119, 203). 



An iron or steel article which has a fundamental coat composed of clay 

 and an oxidizing agent and a separately applied glaze coat covering the funda- 

 mental coat and forming therewith a mottled finish. 



806,153. Walter J. Kohler. Process of making speckled enameled ware 

 and the product thereof. Dec. 5, 1905. (119, 1293). 



The process consists of mixing a comparatively small amount of com- 

 minuted carborundum with dry pulverized enameling material of one color 

 (different from the carborundum), putting the mixture on the article to be 

 coated with enamel, and then subjecting the article to such heat as fuses the 

 enameling material but less than sufficient to fuse the carborundum. 



808,542. Joseph H. Hines. Process of enameling. Dec. 26, 1905. 

 J. Soc. Chem. Ind. 25, 1220 (119, 2458). 



After cleaning the metal is coated with an alkaline material, the enamel 

 is then applied, a coloring coat applied and burned, and a second coat of 

 enamel applied and burned. 



808,744. Otto L. Heintz. Enameled ornament. Jan. 2, 1906. (120, 



57). 



826,628. Samuel H. Thurston. Process of enameling metal and the 

 resulting product. July 24, 1906. (123, 1061). 



The process consists in first forcibly beating one metal into and upon the 

 ether systematically and continuously until the particles or molecules of the 

 coating metal are driven into the metal being coated and incorporated with 

 the particles at and beneath the surface of the same. 



843,985. Wm. Atkinson and Joseph Smith. Enameling metals. Feb. 

 12, 1907. C. A., i, 919. (126, 2390). 



Also English patent 12,554. May 30, 1906. C. A., I, 938. 



A flux of white opal cullett 130, sodium bicarbonate 20, and boric acid 12 

 parts is ground in water to a fine powder, applied to the article and burned. 



862,285. Charles R. Schmidt. Method of enameling. Aug. 6, 1907. 

 /. Soc. Chem. Ind. 26, 1009, (129, 2175). 



The article to be enameled is heated in a rotating enameling chamber or 

 furnace containing dry enamel material. 



866,821. Arthur R. Speer. Method of enameling the interior of sheet 

 metal vessels. Sept. 24, 1907. (130, 1092). 



868,078. William A. Dunlap. Enameled ware. Oct. 15, 1907. (130, 

 1772). 



