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 522
having two ormore barrels automatically loaded and fired, and provided with means for changing the elevation foreach barrel discharged, this could not only be accomplished, but would become quite effective inconsequence of the rapidity of the firing. In Fig. 3299 is illustrated one means for… … a fixed bearing or a friction-roll, as C, supported by the carriage of the gun. This cam-surface,being properly shaped to support each barrel at a different elevation, will, as the barrels are re-volved by the actuating crank-shaft, automatically raise them, as is apparent from an inspection ofthe…
Mechanical engineering -- Dictionaries
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