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Design for a Sledge-Wheel
Published online by Cambridge University Press: 27 October 2009
Extract
The wheel was constructed as shown in the accompanying sketch. It was made from a bicycle wheel and a thin sheet of iron 4 in. wide. The bolts fixing this tread on to the rim projected so as to grip the ice. An ordinary cyclometer was attached to the axle so as to “tick over” by contact with a projection on the spoke.
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