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John Jeffreys (1851-1916)
1916 Obituary 
JOHN JEFFREYS was born in London on 30th December 1831, and received his early education at a private school at Redhill, Surrey.
In 1867 he began an apprenticeship with the late Mr. Henry Fuller, architect and mill engineer, of Manchester, and on its completion in 1873 he went to Messrs. Matthew T. Shaw and Co., constructional engineers, of London, first as a draughtsman, and afterwards as works inspector.
On leaving this firm in 1877 he became assistant manager to Messrs. Rosser and Russell, heating engineers, acting in this capacity until 1881, when he commenced business on his own account as a specialist in heating and ventilation.
From that time he was responsible for the design and installation of heating and ventilating plants in some hundreds of public and private buildings, including the Admiralty Buildings, the Prudential Buildings in Holborn, Kensington Palace, H.M. Record Office, the Government Laboratories in Clement's Inn, etc.
His death took place, after a short illness, at his residence at Egham Hill, Surrey, on 21st April 1916, at the age of sixty-four.
He was elected a Member of this Institution in 1902; he was also a Member of the American Society of Heating and Ventilating Engineers.