automat

A vending machine for food.

A cafeteria consisting of vending machines.

People from all levels of society ate in Automats at least occasionally. Movies often cast their cosmopolitan stars dropping coins in Horn & Hardart's slots, and tourists felt compelled to visit an Automat.

The Automat, whose gleaming chrome-and-glass machines brought high-tech eating to a low-tech era, has gulped down its last coin and served up its last helping of macaroni, baked beans and kaiser rolls. The last Automat in the country, in midtown Manhattan, closed on Tuesday, a victim of changing eating habits. […] There were 30 Automats in New York when Mr. Stern was a young Western Union bicycle messenger stopping in for lemon meringue pie between deliveries.

Alternative letter-case form of automat, in particular one operated by Horn & Hardart.

When King George sat down in Perylon Hall he thrust his gray topper under the chair, just as you do when you're in the Automat.

Breaking away from the traditional self-service policy of the Automats, which has been followed since the company was organized in 1911, the new restaurant will mark Horn & Hardart's first expansion in the New York area since 1938.