JOSIAH

See also:

• LATIMER, HUGH (c. 1490-1555)

LATIMER

See also:

• CLARK, FRANCIS EDWARD (1851- )
• CLARK, GEORGE ROGERS (1752—1818)
• CLARK, JOHN BATES (1847— )
• JOSIAH LATIMER CLARK (1822—1898)
• CLARK, SIR ANDREW
• CLARK, SIR JAMES (1788—1870)
• CLARK, THOMAS (1801—1867)
• CLARK, WILLIAM (1770-1838)
• CLARK, WILLIAM GEORGE (1821—1878)

CLARK (1822—1898)  , English engineer and electrician, was born on the loth of March 1822 at Great Marlow, Bucks . His first interest was in chemical manufacturing, but in 1848 he became assistant engineer at the Menai Straits bridge under his elder brother Edwin (1814-1894), the inventor of the Clark hydraulic lift graving dock . Two years later, when his brother was appointed engineer to the Electric Telegraph Company, he again acted as his assistant, and subsequently succeeded him as chief engineer . In 1854 he took out a patent " for conveying letters or parcels between places by the pressure of air and vacuum," and later was concerned in the construction of a large pneumatic despatch tube between the general post office and Euston station, London . About the same period he was engaged in experimental researches on the propagation of the electric current in submarine cables, on which he published a pamphlet in 1855, and in 1859 he was a member of the committee which was appointed by the government to consider the numerous failures of submarine cable enterprises . Latimer Clark paid much attention to the subject of electrical measurement, and besides designing various improvements in method and apparatus and inventing the Clark standard cell, he took a leading part in the movement for the systematization of electrical standards, which was inaugurated by the paper which he and Sir C . T . Bright read on the question before the British Association in 1861 . With Bright also he devised improvements in the insulation of submarine cables . In the later part of his life he was a member of several firms engaged in laying submarine cables, in manufacturing electrical appliances, and in hydraulic engineering . He died in London on the 3oth of October 1898 . Besides professional papers, he published an Elementary Treatise on Electrical Measurement (1868), together with two books on astronomical subjects, and a memoir of Sir W .

F .

Cooke .