Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 98
apidity with which a hammer may operate when working on this principle, there is nothing gained,and much lost; and as this kind of action is imperative in any hammer that has a maintained orpositive connection between its reciprocating parts and the valve, it is perhaps fair to infer thatone reason… … served to keep hand-moved valves in use in many cases where much could be gained by employingautomatic-acting hammers. Some makers of steam-hammers have so perfected the automatic class, that they may be instantly 90 HAMMERS, STEAM, DIRECT-ACTING. changed so as to work with either dead blows or…
Mechanical engineering -- Dictionaries
Internet Archive Book Images · Mugar Memorial Library, Boston University · No known copyright restrictions (public domain). Free to use for anything.
