Inside Out Library · Explore

Scientific American, Vol. 68, No. 23 (1893) (1893)

leaf 4

An illustration from Scientific American, Vol. 68, No. 23 (1893), 1893, leaf 4
t enough of the coloring matter has entered the pores of of the World’s Fair fire alarm service, and Mr. L. J. and their upper sides concaved. Into each of these is the stone, it is taken out and polished. The effect is Auerbacher, electrician for The E. 8. Greeley & Co. placed a 12” revolving… … The operation is extremly sim- passing through the machine in ple. When the circuit is closed, this way, any dampness that the armature is drawn toward may remain in the goods is taken its magnet, thus releasing the out while on the moving aprons. outer end of the tumbler. The One great advantage…

Internet Archive · Public domain (published before 1931). Free to use for anything.

More pictures from Scientific American, Vol. 68, No. 23 (1893)

More like this