WHEELED VEHICLES

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The book published for the “1001 Inventions” exhibition falsely claims bicycles would not be possible without Muslim-invented gear ratios, cranks, and chains.
Actually, the Romans and the Chinese used cranks before Muslims did. Chains like those used in bicycles were used in ancient Roman devices for lifting water for irrigation, and by Hero of Alexandria in a device to hurl arrows. The Roman hodometer distance-traveled measuring “computer” and Greek water clocks in the pre-Islamic Roman colony of Alexandria Egypt used gear trains with gear ratios before Muslims did.
[Donald Hill falsely claimed that the (Roman-invented) hodometer was a Muslim “fixed-wired knowledge processing machine”. It was merely a device with gears, that dropped a pebble into a bowl each time the wheel of a cart traveled a mile.

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left_side_of_flying_pigeon

bicycle
The book published for the “1001 Inventions” exhibition falsely claims bicycles would not be possible without Muslim-invented gear ratios, cranks, and chains.

Actually, the Romans and the Chinese used cranks before Muslims did.
Chains like those used in bicycles were used in ancient Roman devices for lifting water for irrigation, and by Hero of Alexandria in a device to hurl arrows.
The Roman hodometer distance-traveled measuring “computer” and Greek water clocks in the pre-Islamic Roman colony of Alexandria Egypt used gear trains with gear ratios before Muslims did.


HODOMETER
The claim by Donald Hill that the (Roman-invented) hodometer was a Muslim “fixed-wired knowledge processing machine” is greatly exaggerated. It was merely a device with gears, that dropped a pebble into a bowl each time the wheel of a cart traveled a mile. Do a wikipedia images search for “hodometer”.
The Chinese invented a similar device that struck a gong instead of dropping a pebble.


Image by 齐健, via Wikimedia Commons
image credit https://commons.wikimedia.org/wiki/File:Left_side_of_Flying_Pigeon.jpg#mw-jump-to-license

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