to make a meeting show that it was considered vice not only admits air, but it filters and absorbs. The air tool of steel that would compete at least approximately with by the members present as a very the real diamond for this purpose. It has been discovered JSy. J important and valuable… … other kinds cf apparatus. It appears to in entering through it passes through a layer of sponge us to be one of the most important de- which filters out floating organic dust, and absorbs extraneous vices yet invented to secure ample and moisture. It next passes through a layer of charcoal lumps,…
Patents · Iron · Zirconia · Velocity · Steel · Steel rails · Water · Tensile strength · Scientific American · Railway car · Wrought iron · Antedated june · Water wheels · Patent office · Cast Iron · Heated air
Internet Archive · Public domain (published before 1931). Free to use for anything.
