JF Ptak Science Books Quick Post
This is a Quick Post quickly posted, fast-quick, mainly because I'm not so sure what to say about it, other than "wow". So, I'm sharing these patents for the sake of sharing, mostly without comment. (Here's another curious suppository-related post on this blog: Radioactive Suppository Sex Aids & Radium Toothpaste: Shining Lethal Nonsense).
The first comes from Leonhard Roth, of Brooklyn, who won this patent in 1881:
Source: Google Patents.
The subject would use vaginal "dumbells" for this exercise:
And the visual aid: