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George Hinton Bovill (1821-1868) of Millwall, Poplar
1849 Patent to the application of common exhaust fans to the cases of mill-stones.
1852 Presented a paper before the Institution of Mechanical Engineers in Birmingham on the experiments he and Robert Griffiths had made on screw propellers
1869 Obituary 
GEORGE HINTON BOVILL was born in London in 1821, and was originally engaged in commercial pursuits; at the age of twenty-one he joined the firm of Swayne and Co, Millwall, in the manufacture of railway wheels and machinery.
He was specially known in connection with the important improvements introduced by him in the grinding of corn, by the use of an air blast and exhaust between the millstones; the plan was first adopted in the government dockyards, and its advantages were found to be so great that it became generally used by millers.
He was latterly connected with the Millwall Iron Works, and his last work was the contract for the construction of the iron forts at Plymouth, now in course of erection from the designs of the war department.
He was a brother of Sir William Bovill, the Lord Chief Justice of the Common Pleas; and was a Member of the Institution from the commencement in 1847.
His death took place at Malvern on 9th May 1868, after a long and severe illness, at the age of forty-seven.