A Dog-Gone Shock electric trash can deterrent for dogs. From Hugo Gernsback's Practical Electrics magazine, January 1922.
https://s3-us-west-1.amazonaws.com/h...c_trashcan.jpg
Previously:
https://www.homemadetools.net/forum/...3502#post99254
https://www.homemadetools.net/forum/...062#post125604