So I was randomly doodling around on
Google Patents, as one may be inclined, and came across these tidbits that could be useful for some brand of techpunk.
a) An 1890's Russian inventor's exoskeleton-
Apparatus for facilitating walking
b) I think the intent was heartfelt, but the result seems rather diabolical-
Apparatus for facilitating the birth of a child by centrifugal force
c) And of course, you can check out all of Tesla's patents-
https://patents.google.com/?inventor=nikola+tesla