The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1289
1240 THE MACHINE-SHOP. for soft steel, 61 degrees; for chilled iron, 86 to 90 degrees; for tire steel,74 degrees; for extremely soft steel, keener than 61 degrees. A toolshould be given more side than back slope; it can then be ground moretimes without weakening, the chip does not strike the tool… … Fig. 189. and it is also easier to feed. The nose of the tool should be set to oneside, as in Fig. 189 above, to avoid any tendency to upset. To usea tool of this shape, lathe tool posts should be set lower below thecenter of the work than is now (1907) customary. Forging and Grinding Tools.—The…
Mechanical engineering
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