I need help identifying this bicycle

[gkeep]

Guessing that's shorthand for Patent Applied For.

You can just see the P in 'Pat' in the photo.

 

[Son of Paul]

Hi guy's I cleaned off the paint around the seat tube and don't see any numbers. The head tube has revealed some dark red paint under all that green. I did discover a "S" stamped behind the flange that attaches to the chain stay. Any insights would be greatly appreciated.

 

[fordmike65]

Fork crown, headset cups & even possibly the S(Shelby Tubing Co?) stamp point towards a Shelby built bike.

1920's-Pre-1933 Shelby Bicycle Thread | Antique Bicycles Pre-1933

There is so little discussed or known about Shelby bicycles from this time period. If you have a bike or any historical tidbit please feel to post it here. This bike is currently for sale on EBay and definitely appears to be from the 1920's. The fork is the same as my Shelby built "New...

thecabe.com

 

[Archie Sturmer]

The frame details might be more helpful.

For example, the seat stay bridge?

The unthreaded chain tensioner arrangement, perhaps with a slot for a square nut fastener, looks like those on later Huffman bikes; but not sure who invented it, or when?