Hi, I have a frame with Helical tubes. I was told that only one who was using those were Premium Cycle company, Coventry. 1892-1899 catalogs, pics, anyone? I found with google one picture from copake. Here is link to pic of mine http://www.mrvelo.com/album/index.php?showimage=171 , original parts frame, seat tube, and one rim, all other parts has lost.
Other question brand called "Crown" from 189X pictures will come later.
Other question brand called "Crown" from 189X pictures will come later.