3-Speed Roadster - with odd lug construction.

[SkipdiverJohn]

Wasn't that some odd construction with internal sleeves and then a large electric current was passed through to "weld" the frame joints?

I don't know about Peugeot but I've read about Schwinn having an unusual electro-welding frame fabrication process. Looks like I'm going to have to try to read up a bit more on this subject in general. I used to think frames could be neatly divided into lugged & brazed or seam welded, but there are clearly rather more methods used than I once thought.