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Harry Mason Kettelwell (c1866-1928)
1928 Obituary 
HARRY MASON KETTELWELL was manager and chief engineer for Messrs. William Bradford and Sons of London, architects and brewers' consulting engineers, whom he joined in 1892, and he was mainly responsible for the design of several of the most important brewing plants in the country. He was the patentee of a number of mechanical improvements in brewing machinery.
He served his apprenticeship with Messrs. Brinjes and Goodwin of Whitechapel, and afterwards joined a Westminster firm of consulting engineers as a draughtsman.
In 1888 he was appointed chief draughtsman and assistant works manager with Messrs. H. F. Rushton and Company of Liverpool, and in the following year he was designing and superintending the erection of ochre plant at Milwall for Messrs. E. C. Bennett and Company.
He then spent two years with the Anti-Friction Conveyor and Grinding Machinery Company as chief draughtsman, before taking up his appointment with Messrs. William Bradford and Sons.
During the War, Mr. Kettelwell was associated with the Aircraft Manufacturing Company of Hendon, where he was in charge of the testing of materials, and he was connected with several patents relating to aircraft construction.
Mr. Kettelwell died on 2nd October 1928, at the age of 62.
He became an Associate Member of the Institution in 1906.