Treadle bicycle

A treadle bicycle is a bicycle powered by a treadle instead of the more common crank. Treadles were one of the mechanisms inventors tried in order to position the pedals away from the drive wheel hub before the development of the bicycle chain or instead of it. Treadles have also been used to drive tricycles and quadracycles.

A (probably later imitation) MacMillan bicycle, probably made c.1860
An American Star Bicycle
A treadle-driven tricycle
A treadle-driven quadracycle

History

Treadles were used before the advent of highwheelers on Thomas McCall's velocipede, on highwheelers themselves in an to attempt to address safety issues,[1][2] on alternative configurations of highwheelers,[3] and on the first device called a safety bicycle by British engineer Henry J. Lawson in 1876.[4] Some inventors even combined treadles and chains on the same bicycle.[5][6]

  • A treadle bicycle from 1925
  • McCall's first (top) and improved velocipede of 1869, later predated to 1839 and attributed to MacMillan
  • Velocipede from 1880
  • 1888 Geared Facile Bicycle in the Coventry Transport Museum
  • A modern ElliptiGO seatless treadle bicycle modeled after elliptical trainers
gollark: Well, my copy is on osmarks git™ so meh.
gollark: Huh, I just found an old architecture diagram for potatOS.
gollark: * apeirogon
gollark: Idea: time sphere.
gollark: Anyway, I think it's because you can consider the problem of designing an error correction code similarly to packing spheres, because each sphere of radius n represents all the possible values n bit errors away from a value being transmitted and you want them to not overlap.

See also

References
  1. "Old Spokes Home: 1884 "Facile" Highwheel Safety 40" by Beale and Straw". Retrieved 2010-01-05.
  2. "Old Spokes Home: 1885 Xtraordinary Challenge 50" wheel by Singer". Retrieved 2010-01-05.
  3. "Old Spokes Home: 1889 Special Pony Star". Retrieved 2010-01-05.
  4. Herlihy, David V. (2004). Bicycle: the History. Yale University Press. p. 216. ISBN 0-300-10418-9. Retrieved 2010-01-05.
  5. Ross Harrop. "Unique Treadle Drive Bicycle". Retrieved 2010-01-05.
  6. "The Glider Recumbent". Retrieved 2010-01-05.
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