. American engineer and railroad journal . It is stated that the Chinese, anticipating European invention here as in some other cases, have for many centuries usedthis mineral as the base of a paint used for covering stonebuildings and for painting their junks. Mr. Goodall stales that when mixed with oil or with an ordi-nary dryer, steatite will not dry completely ; but, aided by theadvice of the Holzapfel firm, he has obtained excellent resultsby dissolving it in a varnish. The varnish makes a pigment represent vertical sections at right angles to each other of aboiler so constructed ; the ar
. American engineer and railroad journal . It is stated that the Chinese, anticipating European invention here as in some other cases, have for many centuries usedthis mineral as the base of a paint used for covering stonebuildings and for painting their junks. Mr. Goodall stales that when mixed with oil or with an ordi-nary dryer, steatite will not dry completely ; but, aided by theadvice of the Holzapfel firm, he has obtained excellent resultsby dissolving it in a varnish. The varnish makes a pigment represent vertical sections at right angles to each other of aboiler so constructed ; the arrows shown in full lines represent-ing the course of the gases, while those shown dotted representthe course of the air. A represents the producer furnace, andB the hopper through which fuel is supplied. A Good Boiler Setting.—For some time past the WellmanIron & Steel Company, of Thurlow, Pa., have had running intheir No. 2 boiler house a battery of boilers designed by S. , which embody novel features, and, using a cheap. ^^ WELLMANS PLAN FOR SETTING BOILERS. sufficiently elastic to prevent cracking, while the pores are en-tirely filled by the very fine particles of the steatite, and a coat-ing is formed which, it has been shown by experiment, will pro-tect iron and steel plates from the air, water and galvanicaction, through a period of several years. It is, moreover, notan expensive material, and can be readily obtained in largequantities and ground up to the required fineness without diffi-culty. In this connection it is well also to recall the experiments inthe use of lacquer for ships plates, which is advocated by , and to which reference has heretofore been made in ourcolumns. Some interesting experiments are now in progressin this direction with larquer as a protection for iron and steelagainst the corroding influences of air and sea water. A Gas-Fired Boiler.—The accompanying cut shows a formof gas-fired boiler lately patented in Engl
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
