Svea bicycle
The Svea bicycle was a technical variant of the bicycle in the 19th century. It was invented by the brothers Fredrik and Birger Ljungström and already had the frame shape known today ; the drive of the wheel, however, worked on a completely different principle. The inventors used levers , piano wire and eccentrics instead of chain rings , bicycle chains and rear sprockets , as the bicycle chains of that time often broke for various reasons. The bicycle was driven by alternately operating the levers provided with pedals , and braked by pressing both pedals at the same time. The 1892 patented freewheel of the Svea-bicycle was in series produced and held its own on the market until the for about 10 years technological were overcome problems in the production of bicycle chains.
Web link
literature
- Sigvard Strandh: The machine: history, elements, function. An encyclopedic non-fiction book. Herder Verlag, 1980. ISBN 3-451-18873-2 , p. 220 and Fig. 221