Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 622
nconvenling the great lamp have led to several attempts to improve it; and, among others, M. Delaihas proposed to substitute a pump having a metallic piston, in place of the leathern valves, whichrequire constant care, and must be frequently renewed A lamp was constructed in this manner by… … cmplo ie i hi- imi I In the dioptric light* on ll ion lamp, u itli n 111extinction of the rac< hanicnl lamp bj tn mer, and put tie Bame i- in I hen the In I on tlia rin mechanical lamp , an I as iti il un 610 SEA-LIGHTS. purpose of maintaining the light in a tolerably efficient state for a short…
Mechanical engineering
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