Identifier: metalspinning00tuel (find matches)
Title: Metal spinning
Year: 1912 (1910s)
Authors: Tuells, C Painter, William A
Subjects: Metal spinning
Publisher: New York city, The Industrial press
Contributing Library: The Library of Congress
Digitizing Sponsor: Sloan Foundation

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ks ranging from 2 to 5 feet in diameter are shown in Fig. 44.These tools are also used where the surface that the tool will coverwithout hardening the metal is important. Blanks which are brokendown with these tools are finished with the regular types. The handles of spinning tools vary in diameter from 1*4 to 1%inch, and in length from 16 inches to 20 inches. The tools should TOOLS AND METHODS 37 project from the handles from 9 to 18 inches, and the total length ofthe tool and handle should average from 30 to 34 inches. A group of wood working tools is shown in Fig. 45. These toolsare of the type commonly used by spinners for turning the variousshapes of wooden spinning chucks. As the tools illustrated are thekind regularly used for wood turning by patternmakers and otherwood-workers generally, they will need no description. Preparation of the MetalBrass, copper, and German silver should be pickled after annealing inorder to get the scale or oxide from the surface. There are furnaces
Text Appearing After Image:
Pig. 44. Wooden Tools which are used on LargeThin Copper Blanks that anneal without scaling by excluding the air when heating, butthey are not in general use. A pickling bath may be made by usingone part of oil of vitriol (sulphuric acid) and five parts of water. Theshells can be put in hot, or the bath can be heated by a coil of leador copper pipe running through it. Steam in no case should enterthe bath, as the iron in the feed pipe, will spoil the pickle. Any basketor box that may be used to hold the shells in the pickle should notcontain any iron. If a box is used it should be held together withcopper nails. The pickle can be used cold, but it will take a littlelonger time to remove the scale. As soon as the scale is free, whichwill be in about half an hour, the shells should be removed or washedthoroughly in running water. The shells should be allowed to drybefore the next operation, which is that of spinning. A lead-lined 38 No. 57—METAL SPINNING wooden tank or an earthen jar

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