A velocipede was an early form of bicycle propelled by working pedals on cranks fitted to the front axle; now used as an archaic term for a bicycle.
An American Sawyer velocipipede from 1855
The term was coined by Frenchman Nicéphore Niépcee
in 1818 to describe his version of the Laufmqschine
, which was invented by the German Karl Drais
in 1817. The term "velocipede" is today, however, mainly used as a collective term for the different forerunners of the monowheel, unicycle, bicycle, tricucle, and quadricycle developed between 1817 and 1880.
http://en.wikipedia.org/wiki/Ford_Quadricycle
In 1896 Henry Ford introduced his Ford Quadricycle - and engine driven vehicle, no longer requiring the driver to pedal.