By 1867 Isidore Dreyfus, under the name I. Dreyfus, was making patent lubricators. By 1876 he was partnered with Max Nathan in Nathan & Dreyfus, manufacturing lubricators, water injectors and related apparatus. in 1884 Dreyfus retired from the business, which reorganized as the Nathan Manufacturing Co.

Information Sources

• Nathan Mfg. Catalogue, 1892
• 1867-10-30 , in a report on the ongoing Fair of the American Institute. "Dreyfus's Lubricator.—J. Dreyfus, of New York City, exhibits his lubricator, which appears to be a cheap and good apparatus of its kind."
• Reports on the Philadelphia International Exhibition of 1876. "The production of a given result by the cumulative effect of a repetition of similar mechanical actions is a peculiarity frequently observable; as for example... the Injector of Messrs. Nathan & Drefus, New York, which is in effect the cumulative action of several injectors."
• Text ad in 1884-01-05 Railway World.

  Special Notice.
  92 and 94 Liberty Street,
  New York, December 31st, 1883.
  The co-partnership heretofore existing between the undersigned, under the name and style of NATHAN & DREYFUS, has been dissolved this day by mutual consent. Either of the partners will sign in liquidation.
  Max Nathan
  Isidore Dreyfus.
  The business heretofore carried on by NATHAN & DREYFUS will be continued by the undersigned in all its branches at the above place.
  NATHAN MANUFACTURING CO.
  New York, January 2d, 1884.
  MAX NATHAN, President.
  WILLIAM TOOTHE, Vice-President.
  JACOB W. MACK, Secretary and Treasurer.
  CHARLES JUDGE, Assistant Secretary.