Scientific American, [JUNE 14, 1890. 384 … ON GAS ENGINES.—A VALUABLE <4, SJ, Overman Wheel Co., Makers, POP SAFETY VALVE paper by E. Delamare-Deboutteville, touching upon the WATER RELIEF VALVE istory of gas motors in general. and describing in de- Chicopee Falls, Mass. tail the **Simplex’’ engine invented by the author and JENKINS BROS.…
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