ssible to pedal one revolution forward and onebackward, that is to say, to change the gear at everyinstant without any interruption in the operation ofthe machine. If the cyclist stops pedaling, the chainand sprockets will remain immovable and the machinewill come to a standstill. Thanks to a… … A SIMPLE TWO-SPEED BICYCLE. works. In direct or forward pedaling, it is the upperhalf, and in back pedaling, the lower. All the rest ofthe chain is slack and runs idly as in an ordinary bi-cycje. The small wheel merely supports the chain andreverses its motion. It is therefore submitted to…
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