enameled leather

A glazed leather for boots, shoes, carriage upholstery, and other purposes. It is prepared from hides, which are split to the required thickne , well tanned, curried, and pa ed through two operations; the first to render the leather impermeable to the varnish, and the latter to lay on the varnish. The hides used are those of kip, calf, ox, or horse. They are rubbed on the grain or flesh side with three coatings of boiled linseed oil mixed with ochre or ground chalk, and dried after each coating. The surface is then pumiced, treated with the same colors to metal, pottery, or gla . The colors are prepared from the oxides of different metals, melted with a vitreous flux and laid on with a fine brush, the medium being oil of spike or some other e ential oil. The work is heated in a muffle, which fuses the colors so that they adhere to the metal or other object. The principal colors are oxides of lead, platinum, chromium, uranium. Oxides of tin and antimony give opacity. The enameler works, not with actual colors, but with materials which will a ume certain colors under the action of fire. [ENAMEL, ENAMEL-PAINTING.] "The coloring of furs, enameling and a nealing." Sprat : Hist. of Royal Society , p. 286. the enamel coating on a plate, gla , or biscuit. enameling-furnace, s. A furnace for vitrifying The work is placed in a muffle, which consists of an arched chamber in the midst of a small furnace, and surrounded by fuel, which keeps it at a red heat, although the fuel cannot touch the work. The furnace and muffle are sometimes made of sheet iron mounted on legs so as to bring the work to the level of the artist's eye. enameling-lamp, s. Gla : A gla -blower's lamp with blow-pipe for performing some of the more delicate surface ornamentation of gla .