Parsons and Henry Hays, he founded the Brooklyn Watch Case Co. Fahys' son-in-law, Henry Francis Cook, who was president of the Montauk Steamboat Company, became a partner of Fays & Co. He was president of Joseph Fahys & Co., located in the Fahys Building, on 54 Maiden Lane, New York City the company was established in 1857. For many years he made a specialty of silver watch cases. In 1876, he bought the share of the Fortenbach Brothers and moved the Carlstadt plant to Sag Harbor, Long Island. When both factories were well under way, Fahys sold his New York store to Ward & Jennings, two of his employees, and gave his undivided attention to his manufacturing interests. In 1867, Fahys located a similar factory in Brooklyn in which he associated with Wheeler, Parsons & Hayes, and the joint enterprise was known as the Brooklyn Watch Case Company. In 1861, he formed a connection with Fortenbach Brothers (John, Jacob, and Joseph), which resulted in the building at Carlstadt, one of the first establishments in America which manufactured watch cases on an extensive scale for five years, business was profitable. He continued it under his own name and moved the factory to the fourth floor of 75 Nassau Street, New York City before later moving the plant to Carlstadt, New Jersey. Career ДЇahys bought out the Savoye business on June 1, 1857.

He remained in Savoye's employ for five years, and soon after attaining his majority, began what an independent career. Savage), of West Hoboken, New Jersey, one of the two first makers of watch cases in the United States. He apprenticed himself to Ulysses Savoye (or Ulyses S.

In company with his mother, he came to New York in March 1848. His father was a contractor and both his father and brother died when Fahys was young. He was the son of Joseph and Marianne Moulleseaux Fahys.

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