Originally Posted by JanMM
Looks like a treadle drivetrain but not Alenax. I'm stumped.
Treadle drive has been around for as long as the the bicycle has been in existance, if not longer.
I'm not very knowledgeable in these things, but I would hazard a wild guess that the bike is from around the early 1900's. That looks like it could be a pneumatic tire. I think the chain and sproket system to 'Gear up' the drive train was introduced in the mid 1880's on the Kangaroo Bicycle (a highwheeler). Several companies adopted the design and incorporated it into their drive trains. The New Star bicycle had treadles in 1897 that look very similar though simpler and much less intricate to those pictured. Being a model RR buff and an ardent admirer of drive wheel linkages, I can't even begin to describe how beautiful the linkage on those treadle arms appears to me.
So my wild guess would be an early 1900's Treadle driven Safety Bicycle. If nothing else, that should be a good place to start your research. I can't even guess as to who the manufacturer is.
Some good pics and info here, but nothing that closely resembles your photo... http://www.bicyclemuseum.com/alpha.htm
Last edited by cranky old dude; 04-18-11 at 01:27 PM.