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Huret
Huret was a major French manufacturer of derailers.
Its best-known model was the "Allvit", introduced around 1960. The Allvit was the first inexpensive parallelogram-type derailer, and hundreds of thousands of them were sold through the mid 1970s. Most Schwinn Varsities used this model. The Allvit was a very sturdy unit, well made and reliable. Its parallelogram was pivoted on bolts that could be adjusted, unlike the rivets used in most derailers. The orientation of the parallelogram permitted the jockey pulley to track the cluster more closely than most derailers of its time. Unfortunately, the Allvit had a very strong return spring, which caused cable stretch to be excessive, degrading shifting performance. The strong spring also tended to lead to rapid wear and failure of shift cables.
Another famous Huret model was the "Jubilee." The Jubilee was expensive and lovely, and has the distinction of being the lightest rear derailer ever made. It is much sought after by collectors and weight weenies.
The Huret "DuoPar" touring derailer had two parallelograms (hence the name). The extra parallelogram was used to move the jockey pulley up and down, permitting the DuoPar to handle a wider gear range than any other rear derailer before or since. The original DuoPar was quite expensive, and featured titanium parts. A later, less-expensive version, the Eco DuoPar, was also available for a while.
In the 1980s, Huret was absorbed by Sachs, and Sachs, in turn was taken over by SRAM.
