The metal worker's handy-book of receipts and processes : being a collection of chemical formulas and practical manipulations for the working of all the metals and alloys including the decoration and beautifying of articles manufactured therefrom, as well as their preservation (1890)
Brannt, William T. (William Theodore), 1844- · Philadelphia : H. Carey Baird & Co. ; London : Sampson Low, Marston, Searle & Rivington · leaf 240
242 THE METAL WORKER’S HANDY-BOOK. The jet of sand acts not only upon the upper side of the objects, which it strikes first, but also almost as energetically upon the lower, so that, as a rule, the cleansing process is completed by one operation. Articles of a specially unfavorable shape must be… … F'g- 7- Cleansing of Metals by Means of Acids with the Use of a Galvanic Current. — When metallic, especially iron, objects are cleansed and made bright by pickling in an acid, the latter, as a rule, dissolves besides the oxide more or less metal, whereby the surface of the article loses much of…
Metal-work · Metals
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
