The OHS Pipe Organ Database

BuilderID 2577

Builder Identification

Garwood, New Jersey, 1920s.

Additional Notes

  • From the OHS PC Database, derived from A Guide to North American Organbuilders, rev. ed., by David H. Fox (Organ Historical Society, 1997). —

    With Aeolian firm of Garwood, New Jersey, consulting engineer; with U.S. Government; with General Electric; with RCA; with Westinghouse; inventor in Gloucester, Massachusetts.

    Not to be confused with Laurens Hammond, inventor of the electronic organ.

    Patents held:

    • Patent #1,621,879; 22 Mar. 1927; pipe
    • Patent #1,641,166; 6 Sep. 1927; electropneumatic swell
    • Patent #1,664,552; 3 Apr. 1928; pedal control
    • Patent #1,664,554; 3 Apr. 1928; piano effect device
    • Patent #1,670,353; 22 May 1928; sliding support for manuals
    • Patent #1,680,039; 7 Aug. 1928; pipe organ
    • Patent #1,680,041; 7 Aug. 1928; automatic music control
    • Patent #1,690,577; 6 Nov. 1928; organ
    • Patent #1,693,751; 4 Dec. 1928; swell
    • Patent #1,693,752; 4 Dec. 1928; organ control
    • Patent #1,702,773; 19 Feb. 1929; organ
    • Patent #1,722,977; 30 Jul. 1929; harmonic organ
    • Patent #1,722,982; 30 Jul. 1929; pipe
    • Patent #1,814,472; 14 Jul. 1931; organ control.


    • Diapason: March 1926:1.
    • Diapason: April 1942:2 .

Database Entries

There are no entries in the database that describe organs by John Hayes Hammond, Jr.

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