Safety bicycle

Definition and stakes

W. F. Grew,  The Cycle Industry (1921)

“ We have now arrived at the stage when a high bicycle was regarded as dangerous, and, if the front wheel were too small, it detracted from the rider’s speed owing to the shorter distance covered by each turn of the wheel. What was the next move? The engineer’s mind turned towards a method of gearing by cogs or chains, by which one turn of the crank axle would cause the driven wheel to turn more than once. That is where we get our method of describing the ratio of gearing between the crank and the wheel of a modern safety bicycle. ”
Source: Wikisource

Edward Huntington Williams,  Every-day Science: Volume 7. The Conquest of Time and Space

“ The problem of making the bicycle a relatively speedy vehicle had indeed been solved by the use of a large wheel—sometimes sixty inches in diameter—operated by a simple crank after the manner of the early machine of Lallament; but while bicycles of this type attained a considerable measure of popularity, the danger of156 taking a "header" on encountering any obstacle in the road was one that seemed to the average person to out-measure the pleasure or benefit to be derived from rapid transit thus attained. The safety bicycle, however, practically eliminated this danger. ”
Source: Gutenberg

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