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John isaac hawkins biography

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        2. John Isaac Hawkins (–) was an inventor who practised civil engineering.
        3. John Isaac Hawkins.
        4. John Isaac Hawkins, an Englishman who lived in the United States in about and became an important piano maker in Philadelphia.
        5. John Isaac Hawkins was an inventor who practised civil engineering.

          6. John Isaac Hawkins..

          Grace's Guide To British Industrial History

          John Isaac Hawkins (1772-1855)

          1807 Bankruptcy. '...Commissioners in the Commission of Bankrupt awarded and issued forth against John Isaac Hawkins, of Dalby-Terrace, City-Road, in the County of Middlesex, Manufacturer of and Dealer in Musical Instruments...'[1]

          1808 An observer of the road experiments with a steam engine in London by Richard Trevithick and reports it in 1848 [2]

          Note: There is an opinion that the propelling pencil was invented by John Isaac Hawkins with Sampson Mordan and that Gabriel Riddle was a manufacturer.

          1824 John Isaac Hawkins, Civil Engineer, became a member of the Institution of Civil Engineers.[3]

          George Escol Sellers held Hawkins in high regard, and recorded that while in the USA he invented and constructed a lathe for turning oval picture frames, and a musical instrument called a clavial (not a success).

          He developed a vacuuum evaporating process for sugar refining, w