Adolphe Gutmann
Eloyes Watch was a the company of Adolphe Gutmann, a Prussian watchmaker in Saint-Imier and La Chaux-de-Fonds around the turn of the century.
Adolphe Gutmann was a Prussian watchmaker, born in Eberswalde.
Adolphe Gutmann is listed as a watchmaker in Saint-Imier by 1873 on Rue du Stand. He moved to Grande Rue 17 by 1883 and Rue du Temple 4 by 1898.
Gutmann was keen on producing open heart watches with cut-away dials and exposed balances, patenting such a watch in 1901 and another in 1903. He created an improved model with the balance exposed at 6:00 and registered it in March 1903.
Gutmann registered many brands but it appears that Eloyes was his favorite. Registered in May 1902, the company was renamed Ad. Gutmann, Eloyes Watch Co. when it relocated to La Chaux-de-Fonds in March 1903. The company was located at Rue du Parc 51. Other brands registered by Gutmann include Nike, Sakhaline, and Hercules.
Adolphe Gutmann died by December 1907 and his widow Florine, also from Prussia, took over the company. It was now located at Rue du Parc 31bis, likely her home. The company ceased operations and closed in 1915.