Rene Dagron
Rene Dagron , born with Beauvoir, in the the Sarthe, on March 17th, 1819, dead on June 13rd, 1900, is a photographer, inventor of the microphotography or Microfilm.
In 1860, Rene Dagron will gather a micro sight with the magnifying glass of Stanhope. The sights were stuck on a rod of glass 3 mm in diameter and 5 to 6 mm length. The enlargement is approximately 100 times.
Dagron had presented to the World Fair of 1867, of the " microphone-points" i.e. so reduced photographs which they could be read only by means of devices such as the microscope of Stanhope. This process was described in many works of which " Wonders of the science or popular Description of the inventions modernes" , of Louis Fig tree (Jouvet, 1870). It made it possible the Dagron company to propose photographs enchased in jewels: rings or pendentive.
The idea to use this process to send messages thanks to the carrier pigeons came from Dagron itself. who proposed in Germain Rampont to carry out the microphone-dispatches. Rampont accepted immediately to take again the top of its Steenackers rival. After a financial arrangement with Rampont, Dagron flies away on November 12th on Niepce with two of his/her colleagues (Fernique and Poisot) to transport the laboratory equipment necessary. But this one will not arrive at its goal, since touched by the Prussians, the balloon will be constrained with the landing in occupied territory. Dagron will succeed in escaping to them. IT went to Tours (Whereas Rampont wished that it settle in Clermont-Ferrand) and negotiated nearly eight days an arrangement with Steenackers and Gambetta. It is true that the equipment necessary having been destroyed, it makes a success of only on December 11th, after several tests to produce microphotography of quality according to the wishes of Steenackers. Meanwhile, the Prussian troops advanced and Leon Gambetta had been withdrawn in Bordeaux. Dagron there also went and was in measurement on December 15th to produce the stereotypes of the dispatches of Bordeaux.
During the Head office of Paris (1870), carrier pigeons transported messages which, to be read, were to be increased by a specific apparatus of projection.
Certain museums have messages and projectors (Musée of the Post office, Arts and Métiers) but there exist unfortunately almost more film cameras in the world and none in museums.
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