The sulfur in this morning glory served to cross-link the rubber, a process predating Charles Goodyear's discovery by at least 3,000 years.
Philemon Dickerson was the father of patent attorney Edward Nicholl Dickerson who had defended Samuel Colt and Charles Goodyear in their patent-infringement suits.
Slingshots depend on strong elastic materials, typically vulcanized natural rubber or the equivalent, and thus date back no further than the invention of vulcanized rubber by Charles Goodyear in 1839 (patented in 1844).
Stephen Moulton (7 July 1794–26 April 1880) was an Englishman who, as an agent of the U.S. rubber pioneer Charles Goodyear, first brought samples of vulcanized rubber to the UK.
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Having acquired patent rights to the vulcanisation of rubber from Charles Goodyear in 1853, Hutchinson went to France to set up a mill in Châlette-sur-Loing, Loiret.
Many of John Elitch's friends came to perform at the Elitch Theatre including Eugene O'Neill, Charles Goodyear, and Sarah Bernhardt after his death.