The examples at the link are mostly from around midcentury. I'm familiar with a more recent example: In 2006-2009, there was one of those on St. Mark's Place -- 8th street between 2nd and 3rd. It was called "Bamn!" and IIRC was open 24/7, so it mostly catered to late-night drinkers and partiers. (It happened to be on one of NYC's few streets that always had lively nightlife, even during the week.) It was cheap, at something like $1 or $2 for a burger, and it was reasonably good.

There's a pic: https://www.flickr.com/photos/93779577@N00/4235886625

It was a fun place. Wish there were more like it.

Thank you! I was wondering if I had imagined that.