Scientific American. JUNE 29, 1878.] 403 A New Source of Lead Poisoning. New Mechanical Inventions. lice stations nearest the fire. Having thus shown and in the mechanism for operating the burrs the arrangements and working of the radial sys- and pluggers. tem asin operation at Hamburg, the author… … Mr. E. R. Dingley, of New York city, is the Fig. 4 shows a gong which is in use on the banks of the canals and rivers for the purpose of inventor of an improved Automatic Cut-off for Fig. 4.—FIRE ALARM GONG. warning the fire boats moored in the channel; steam engines, in which a novel arrangement…
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-448-271.webp)
