Gill Silent Alarm
How would you like to get burned every morning? Well, that's part of the idea behind this invention. Charles H. Gill of Chicago, Illinois patented this wristwatch in 1919. The wristwatch worked like a regular alarm clock would, but, instead of making noise to wake the wearer, it remained silent. Instead of bells and buzzers, this wristwatch burned the user with a small, electrical charge.
I'm interested in this and any other similarly quirky invention. The quirkier, the better.