Jules Carpentier

Jules Carpentier ( born August 30, 1851 in Paris, † June 30, 1921 in Joigny ) was a French engineer, author of numerous inventions in the field of optics, photography and film.

Biography

As the son of a Parisian cloth merchant, he attended the Lycée Louis -le- Grand and enters 1871 at the Ecole polytechnique. Two years later he leaves this and will engineer the state tobacco manufactories. In 1876, he announces and reaches the Compagnie des Chemins de fer de Paris à Lyon et à la Méditerranée, initially as a learning workers, after six months as an adjunct of the main material engineers.

1878, upon the death of the designer Heinrich Daniel Rühmkorff, he buys his workshop, which is on the verge of bankruptcy, and turns it into a thriving business venture for the construction of electric and magnetic devices. He is interested in more for holding musical improvisations, where he creates a piano writer named Mélographe connected to the Mélotrope for the performance of the recorded works. From the Carpentier- works the first galvanometer or Rheographen, ammeter and voltmeter, Wheatstone bridges, calibration capacitors, but also simple magnet sets come. The workshop Carpentier has moreover apparatus designed to measure the magnetic variation as the magnetic observatory.

From 1890 on he devoted to the photographic and cinematographic equipment. He invented and designed the famous " photo - jumelle à répétition ", a very compact camera, easy to use and zweiäugig reflex, which is a sales success. Jules Carpentier also realized instruments Focometrie and is committed to the Façonnage of lenses and in opto-mechanics. He is also the creator of the Unterwasserperiskopes and works on three-color photographic process. He wrote the patent of his cinematograph and builds the apparatus of the Lumière brothers.

Jules Carpentier was elected in 1907 on the free member of the Académie des sciences, he is the Honorary President of the French Photographic Society from 1909 to 1911, subsequent to Jules Violle that his teacher was at the Lycée Louis- le -Grand. He is also president of the Professional Association of the electrical industry, the International Electric Company, the French Association for the Advancement of Sciences and Engineering Company, the predecessor of the National Council of Engineers and Scientists of France. In 1897 he was elected to the length of office. In 1907 he receives the Cross of Commander of the Legion of Honour.

He died in 1921 in a car accident in Joigny.

Jules Carpentier is the grandfather of the television producer Gilbert Carpentier.