VITREOUS ENAMELING 7 



LesmuUer, A. Process for making glass and enamels opaque. German 

 Patent 218,316, April 1, 1909. /. Soc. Chem. Ind., 29, 420. Oxides of 

 tin, silicon, lead, titanium, zirconium or thallium are fused with boric 

 acid derivatives and the fused mass exposed to the action of steam or 

 acid vapors while it cools and the solid product subsequently melted with 

 the enamel. 



Mayer, M., and Havas, B. Expansion coefficient of sheet iron enamels. 

 Chem^-Ztg., 33, 1314; C. A., 4, 1092. 



Mayer, M., and Havas, B. The coefficient of thermal expansion of sheet 

 iron enamels. Sprechsaal, 42, 497-9 (1909); C. A., 3, 2494; /. Soc. 

 Chem. Ind., 28, 1199. Six different enamels were studied. 



Mayer, M., and Havas, B. The function of fluorine compounds in enamels. 

 Sprechsaal, 42, 460-1 (1909); Chem.-Ztg., 33, 758 (1909); C. A., 3, 2740, 

 3001; J. Soc. Chem. Ind., 28, 835. Fluorine is a good opacifier and per- 

 mits the tin oxide to be decreased to 3 per cent and still maintain excellent 

 covering power. 



Orton, Edward, Jr. Notes on the testing of enameled sheet steel wares. 

 Trans. Amer. Cerant. Soc., u, 320-41 (1909); C. A., 3, 2741; /. Soc. 

 Chem. Ind., 28, 1130. 



Shaw, Joseph B. The allowable limit of variation in the ingredients of 

 enamels for sheet steel. Trans. Amer. Ceram. Soc., u, 103-52 (1909); 

 C. A., 3, 2740; /. Soc. Chem. Ind., 28, 1130. A discussion of the manu- 

 facture of sheet steel enameled ware, followed by an investigation of 

 fitting ground and top coats to a particular Bessemer steel. It is replete 

 with details and explanations. 



1910 



de Back, A. Method and apparatus for recovering iron and steel from waste 

 enameled articles. English Patent 3375, Feb. 11, 1910. /. Soc. Chem. 

 Ind. t 29, 1390. The articles are first pressed together to crack the enamel 

 and the enamel then scraped off. 



Cavanaugh, J. A. Large electric enameling oven. Elec. World, 56, 685-6; 

 C.^.,5,29. 



Cheney, Merritt B. The limits of composition of enamels for cast iron. 

 Trans. Amer. Ceram. Soc., 12, 543-7 (1910); C. A., 5, 362. 



Goldschmidt, Th. Removing enamel and recovering the iron. German 

 Patent 242,055, April 2, 1910. French Patent 418,971, Aug. 1, 1910. 

 C. A., 6, 2157; /. Soc. Chem. Ind., 30, 92. 



Grunwald, J. Cast iron enamels. Stahl u.-Eisen, 30, 1201-6 (1910); /. Soc. 

 Chem. Ind., 29, 951. 



Grunwald, J. The stiffening of wet ground enamels. Sprechsaal, 43, 594-7 

 (1910); C. A., 5, 168; /. Soc. Chem. Ind., 29, 1251. The reagents recom- 

 mended are ammonium chloride or carbonate, magnesium oxide and 

 borax. 



Hillringhaus and Heilemann. Zirconium oxide as a clouding agent in enamels 

 and glasses. Z. anorg. Chem., 66, 436; C. A., 5, 167. 



