Thin wheel with teeth that engage with a chain.
1The sprocket wheel is at H and this is just as it is taken from the original bicycle shaft.
2The sprocket wheel and chain were taken from a discarded bicycle, which was also drawn upon for the cork handle used on the steering lever.
3This shaft and sprocket wheels drive the paddle wheel by side chains of the bicycle kind.
4The occupant of the rear seat contributes his part of the power with his feet on pedals of the shaft that carries the sprocket wheels.
Translations for sprocket wheel