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- Lucien Charles Hippolyte Juy was a French industrialist who made derailleur gears. He is credited with making the first derailleur with a collapsible parallelogram. A hinged frame swung in and out from the frame and fed the chain to one of a number of sprockets attached to the hub. Juy's derailleurs, sold as Simplex derailleurs, were novel in having a jockey wheel to correct the tension of the chain as it moved across differently sized sprockets. (en)
- Julien Juy (...) è un inventore e imprenditore francese, fabbricò il primo deragliatore per biciclette con parallelogramma. I deragliatori di Juy furono venduti a marchio Simplex. (it)
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- 4906 (xsd:nonNegativeInteger)
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- Lucien Charles Hippolyte Juy was a French industrialist who made derailleur gears. He is credited with making the first derailleur with a collapsible parallelogram. A hinged frame swung in and out from the frame and fed the chain to one of a number of sprockets attached to the hub. Juy's derailleurs, sold as Simplex derailleurs, were novel in having a jockey wheel to correct the tension of the chain as it moved across differently sized sprockets. (en)
- Julien Juy (...) è un inventore e imprenditore francese, fabbricò il primo deragliatore per biciclette con parallelogramma. I deragliatori di Juy furono venduti a marchio Simplex. (it)
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- Lucien Juy (it)
- Lucien Juy (en)
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