The "indispensable" bicyclist's handbook; a complete cyclopaedia on the subject (1881)
Sturmey, Henry · Coventry, Iliffe and Son · leaf 53
ANALYSIS OF THE MODERN BICYCLE. 4* external worm cut upon the top. Two of these are screwed on to the top of the back-fork ends ; the wheel pin placed within the slots, … MICKELWRIGHT AND GLADWYN’S PATENT ATTACHMENT. and strong spiral springs put inside the tubes above it. Brass caps then screw down upon the external worms, forcing the springs down, keeping them firm and compressing them. By screwing down more or less the power of the springs can be adjusted to a…
Bicycles
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