Johnson, Percival Norton

Johnson, Percival Norton
SUBJECT AREA: Metallurgy
b. 29 September 1792 London, England
d. 1 June 1866 Stoke Fleming, Devon, England
English chemist, assayer, mining engineer and founder of the firm Johnson Matthey.
He was the son of John Johnson, then sole Commercial Assayer in London, from whom he inherited his aptitude for chemistry and metallurgy. At the age of 14 he was apprenticed to his father by the Worshipful Company of Goldsmiths. Ore samples then being analysed in Johnson's office introduced him to the new metal platinum, and resulted in a paper to Philosophical Magazine in 1812. Johnson established himself as a "practical mineralogist" in Maiden Lane, London, in 1818 and in Hatton Garden after 1822. He was greatly assisted by a fellow metallurgist, Thomas Cock (1787–1842), who developed the platinum fabrication and pigment sides of die business. In 1827 Johnson was consulted by the Russian government about the exploitation of the rich platinum deposits that had been discovered in the Urals in 1819. Between 1829 and 1832 Johnson became the first in England to manufacture nickel, extracted from nickel-bearing material imported from Germany at his plant at Bow Common on the Regent's Canal. In 1832 he began to réfine gold imported from the Imperial Brazilian Association by a process which separated without loss the metals silver, platinum, palladium, rhodium and iridium. This profitable activity continued until the Brazilian company was wound up in 1852. Since 1824, Johnson had been named "assay master" by a number of mining companies. From 1843 until the mid-1850s he had a considerable mining interest in the West Country. Meanwhile, the Hatton Garden establishment continued to prosper. In 1839 he was joined by George Matthey, who particularly fostered the Russian platinum business, and in 1851 he was taken unto partnership and the firm became the celebrated Johnson Matthey. In the following year the firm was officially recognized as one of the four Assayers to the Bank of England appointed to handle the flood of gold dust then arriving in England from the Australian gold fields. Soon after, however, ill health compelled him to retire to his Devon country house.
Principal Honours and Distinctions
FRS 1846.
1812, "Experiments which prove platina, when combined with gold and silver, to be soluble in nitric acid", Philosophical Magazine (1st series) 40(171):3–4.
Further Reading
D.McDonald, 1951, Percival Norton Johnson, London: Johnson Matthey (includes lists of his publications and his honours and awards).
——1964, The Johnsons of Morden Lane, London: Martins.
——1960, A History of Platinum, London: Johnson Matthey.

Biographical history of technology. - Taylor & Francis e-Librar. . 2005.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Johnson Matthey — Johnson Mathey plc Rechtsform Aktiengesellschaft Gründung …   Deutsch Wikipedia

  • Johnson Matthey — Infobox Company company name = Johnson Mathey plc company company type = Public (lse|JMAT) company slogan = foundation = 1817 location = London, England, UK key people = Sir John Banham (Chairman), N A P Carson, (CEO) num employees = industry =… …   Wikipedia

  • Cupronickel — or copper nickel or cupernickel is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. Cupronickel is highly resistant to corrosion in seawater, because its electrode potential is adjusted to be neutral …   Wikipedia

  • literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

  • Nordamerikanische Literatur — Nordamerikanische Literatur. Die N. L. hat ihren Ursprung erst seit der Revolution. Vor derselben wurden zwar in New York u. Philadelphia, Boston, Charleston u. anderwärts Bücher geschrieben u. gedruckt, doch waren es vorzugsweise theologische,… …   Pierer's Universal-Lexikon

  • Comunidades en Saskatchewan — Las Comunidades de la provincia de Saskatchewan, Canadá son todas las villas, ciudades, pueblos, incorporados, villas turísticas y aldeas organizadas no incorporadas.[1] Las formas rurales regionales de administración son municipalidades… …   Wikipedia Español

  • List of works on intelligent design — This list is incomplete; you can help by expanding it. This is a list of works addressing the subject or the themes of intelligent design. Contents 1 Non fiction 1.1 Supportive non fiction …   Wikipedia

  • Todos los Personajes de Harry Potter — Anexo:Todos los Personajes de Harry Potter Saltar a navegación, búsqueda J.K. Rowling es la autora de la saga de Harry Potter. En la serie Harry Potter , escrita por J.K. Rowling, Hay mas de 600 personajes, acontinucacion estan todos. Esta lista… …   Wikipedia Español

  • Anexo:Todos los Personajes de Harry Potter — Se ha sugerido que este artículo o sección sea fusionado en Anexo:Personajes de Harry Potter (discusión). Una vez que hayas realizado la fusión de artículos, pide la fusión de historiales aquí …   Wikipedia Español

  • List of Privy Counsellors (1952–present) — This is a List of Privy Counsellors of the United Kingdom appointed since the accession of Queen Elizabeth II in 1952. Due to political ties, some Prime Ministers from Commonwealth realms also are ascended to the British Privy Council as… …   Wikipedia

  • 100-Meter-Sprint — Der 100 Meter Lauf ist die kürzeste olympische Sprintdisziplin in der Leichtathletik und wird auf einer ausschließlich geraden Strecke ausgetragen, wobei jeder Läufer vom Start bis zum Ziel in seiner eigenen Bahn bleiben muss. Gestartet wird im… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”