Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives (1916)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co., pub. for Sears, Roebuck & co. · leaf 403
Figure 1SS American Locomotive Safety Valve the valve shell. If no lathe is at hand, then grind th/valve proper on a perfectly flat surface of iron or stcc,until its two bearings are exactly on a plane and witlgood smooth surfaces; then take the shell and gri;its seats in precisely the same manner;…
Locomotives
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