🚲 Weird bicycle (advert) history - 'Voltaic Belts' for 'Nervous, Debilitated men'
The Wheel magazine, Feb 1886.
https://cyclearchive.com/magazines/the-wheel/vol9-19.pdf
Found the patent for this, which doesn't give much away, but nevertheless intriguing https://patents.google.com/patent/US178611A/en