John Harvey Kellogg--yes, one of the Kellogg brothers behind the cereal company--invented corn flakes, advocated vegetarianism and...well, let's just say that he had some weird views about sex. Not especially unusual views for the time, but Kellogg was exceptionally passionate about combating sexual passion.
But I digress. At his health spa in Battle Creek, Michigan, Kellogg inflicted his guests with many different bizarre implements of health improvement. This machine repeatedly slapped the user with what appear to be strips of canvas. At the link, you can view fourteen other gadgets designed by Dr. Kellogg.