Wayback Machine 1934: Bike Moves By Pumping Action
by Lloyd Alter, Toronto 
on 02.16.08
This is actually extraordinarily clever, a bike even simpler than, dare we say it, a fixie! By putting the axle of the rear wheel off-center, one propels the bike by moving up and down on the flat board. You probably start it like a scooter and then do continuous carefully timed jumpsquats to keep it moving. Sort of a tribrid scooter, longboard and bike. No chain, no sprockets, but that rear fender is never gonna work. ::Modern Mechanix
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