Ernst Gustav Hoffmann: Difference between revisions
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1890 Lived in Beaconsfield Road, Friern Barnet<ref>Kelly's Directory</ref> | 1890 Lived in Beaconsfield Road, Friern Barnet<ref>Kelly's Directory</ref> | ||
1891 Ernest G Hoffmann, inventor (engineer), lived in Friern Barnet, with Mathilde, 30, Mary J. Doull, 42 (wife to J. Doull | 1891 Ernest G Hoffmann, inventor (engineer), lived in Friern Barnet, with Mathilde, 30, Mary J. Doull, 42 (wife to [[James Doull|J. Doull]] C.E. absent), Beatrice J Doull, 13, Margaret E. Doull, 11, Florence E Doull, 11<ref>1891 census</ref> | ||
1892 Ernst Gustav Hoffmann patented improvements in methods of making balls (a ball lathe) (1893 US patent) | 1892 Ernst Gustav Hoffmann patented improvements in methods of making balls (a ball lathe) (1893 US patent) | ||
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1905 Naturalised US citizen<ref>U.S. Naturalization Record Indexes</ref> | 1905 Naturalised US citizen<ref>U.S. Naturalization Record Indexes</ref> | ||
Revision as of 07:55, 8 July 2018
Ernst Gustav Hoffmann of the Hoffmann Manufacturing Co
c.1864 Born in Dresden, Saxony, Germany
1890 Lived in Beaconsfield Road, Friern Barnet[1]
1891 Ernest G Hoffmann, inventor (engineer), lived in Friern Barnet, with Mathilde, 30, Mary J. Doull, 42 (wife to J. Doull C.E. absent), Beatrice J Doull, 13, Margaret E. Doull, 11, Florence E Doull, 11[2]
1892 Ernst Gustav Hoffmann patented improvements in methods of making balls (a ball lathe) (1893 US patent)
1892 Patent on improvements in casters for furniture
1892 Entered the USA for the first time
1895 Patent on improvement in casters and caster sockets; address: New York
1897 Geoffrey Foster Barrett and Charles Barrett persuaded Hoffmann to come to the UK
1898 Sold patent rights on bearings to a new public company incorporated as Hoffmann Manufacturing Co
1898 Patents, with Hoffman Manufacturing Co, both of Barbican, London, on improvements in stop mechanism for turning or cutting machines; on drive chains; on devices for feeding wire for machines adapted for ball making, etc; on machines adapted for making balls, rivets, screws, etc; on circular cutters for lathes.
1898 Patent on improved means of actuating clutches, brakes, etc; address: Barbican
1899 Patents on improvement in worm gears in connection with elevator apparatus; on thrust bearings; on driving and brake mechanisms for cycles; address: Chelmsford
1900 Patents on improvements in locking devices for nuts; address: Chelmsford
1901 Ernest G Hoffmann, Manager, mechanical engineer, lived in Chelmsford with Matilda Hoffmann 41[3]
1903 Hoffmann left the Hoffmann Manufacturing company
1905 Naturalised US citizen[4]