Various, Scientific American, Volume 22…
“ WASHING MACHINE.--John J. Kimball Naperville, Ill.--This invention relates to improvements in washing machines, and consists in an improved arrangement of operating mechanism for revolving a vertically suspended shaft with a crank at the top, and carrying within the tub a corrugated or roughened rubber, for action on the clothes. The invention also comprises an improved arrangement of the rubber, whereby it is made capable of sliding up or down on the shaft, according to the amount of clothes to be acted on. ”
