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1911 Living at Uplands, Champion Hills, London SE: Frank Trier (age 58 born Camberwell), Civil Engineer - Employer - Widower. With his four sons; Hans Trier (age 33 born Camberwell), Artist; Frank Newton Trier (age 32 born Camberwell), Civil Engineer - Employer; Werner Anton Trier (age 28 born Camberwell), Civil Engineer - Employer; Erwin Trier (age 26 born Camberwell), Fruit Grocer - Employer. Three servants.
1924 Obituary 
FRANK HENRY TRIER was born in London on 13th February 1852.
He studied at home and abroad and secured the highest diploma in Engineering at the Karlsruhe Polytechnic.
In 1878 he entered into partnership with Mr. J. D. Brunton and founded the firm of Brunton and Trier to develop patents relating to a new method of working stone by means of the now well known device of a circular rolling cutter.
For many years he was responsible for numerous patents and designs, perhaps the most important being a very successful machine for dressing granite and other hard stones, for which he was awarded a gold medal at the International Inventions Exhibition, London, 1885, and two gold medals at the Paris Exhibitions of 1878 and 1900 respectively.
In 1882 he, together with two of his brothers, founded the firm of Trier Bros., Ltd., to develop the "Stauffer" system of lubrication. Herein Mr. Trier's inventive faculty found considerable scope, and many new and valuable engineering appliances were produced.
His last important conception was the design of a machine for boring the Channel Tunnel. A fine working model fully demonstrated the practicability of the machine which was full of original ideas and only the shelving of the scheme prevented the construction of a working machine.
He was a man of varied interests and occupied himself very much with social problems. He was appointed a Justice of the Peace for the County of London.
His death took place suddenly on 4th June 1923, at the age of seventy-one.
He became a Member of this Institution in 1887.