Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 337
acid method. the drill stock. The tube is i-evolved The apparatus used is very simple, by the gearing of the drill stock while and is shown in Fig. 282. Well-dried it is supplied with a mixture of No. 4 sand, contained in the cylindrical emery and water or emery and turpen- vessel a, is allowed to… … Etching glass. altered at will, so as to regulate the supply of emery to reach the surface fall of the sand. The tube conveying being cut. This device makes a hole the current of air or steam terminates in the glass in a short time. just above this spout, in a nozzle con- If a larger aperture is…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
