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John Augustus Arnold Buchholz (1846-1890)
1846 Born in Prussia, son of Gustav Adolph Buchholz
1851 Edward H Buchholz 21, gentleman, brother of ..., lived in Marylebone with Arnold Buchholz 4, Adolph Buchholz 3
1863-68 Pupil of his father, consulting engineer of London and Paris; involved in the design and construction of various mills., including that of S. S. Allin in Cork.
1868-71 Engineer to the Wire Tramway Co, constructing tramways in France and Austria
1871-73 Designing machinery for mills for his father's company
1873-77 Experimenting with the design of milling machinery and patenting the results.
1876-82 Designing and building flour mills
1882 John August Arnold Buckholz was naturalised a British citizen.
1882 Dissolution of the Partnership with Peter Mumford for the sale of Ganz and Co's. Roller Mills, at the Royal Flour Mills, Vauxhall, in the county of Surrey, under the style or firm of Buchholz and Co. 
1882-8 Designing mills and consulting engineer Williams (?), Greenwood and Batley, of Leeds
1889 Became a member of Inst civil Engineers; business address: 1 Westminster Chambers, London, and 3 St Stephens Chambers, Bristol.
1890 Obituary 
. . . . It is difficult to describe the part played by Arnold Buchholz in revolutionizing the old system of flour-milling, and introducing the new one, without first briefly referring to his father, Gustav Adolph Buchholz and his work. He was one of the first to introduce the roller-mill and semolina milling into England, and was the inventor of a considerable number of machines for decorticating or hulling and grinding flour. . . . .
From 1873 to 1877 he was engaged in experimenting upon, and in patenting improvements in milling machinery, . . . . .
From 1876 to 1862 he was engaged in designing and building flour-mills for Barlow and Sons, Bilston; Fairclough and Sons, Warrington; John Ure and Sons, Glasgow ; Frost and Sons, Chester ; Reynolds and Hasselgrove, Wakefield.
From 1882 on to 1888 he was engaged in the design of several large mills, among others, one for William Baker and Sons, of Bristol. . . . . .
In 1884, Mr. Arnold Buchholz was appointed Consulting Engineer for flour milling to Greenwood and Batley, and he continued in this post up to the time of his death, while practising also on his own account as a Consulting Engineer. . . . . [more]