Inside Out Library · Explore
Scientific American, Vol. 70, No. 25 (1894) (1894)
leaf 3
he upper end of the rubber is now connected to a pair of tate the frequent and ready part of attachment, and in plain view of the opera- constant bellows, and a brisk current of air continued cleaning out of the filters. The tor. The screw on the left is used when marking filtering cylinder, or the… … THE BERKEFELD FILTER. © 1894 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 70, No. 25 (1894)
More like this
