Been there, done that...just took me a while to remember the name: “Horn and Hardart”
https://www.youtube.com/watch?v=ZrbyqUOObdU
Used to go to the one in downtown Philly (probably Broad St., though it could have been Market) as a child in the early 60s; thought it was the neatest thing. Maybe it's why I learned to love Japan with all its vending machines...