|Charles Augustus Schmalcalder
Another name for Charles was Karl August Schmalkalder.
The prismatic compass was invented and patented by Charles Schmalcalder, a mathematical instrument maker in London, in 1812 (Turner 1983,257). As its name implies, it uses a prism, so that the angle could be read while the object was being sighted.
Charles Augustus Schmalcalder registered patent No 3545 on march 5, 1812 under the name "Philosophical Instruments", he was then granted an "Special Licence" by His Majesty King George III, which had a duration of fourteen years, The Patent expired on March 4th, 1826.
Charles Schmalcalder filed patent: No 3000 of 22 December 1806 for a Delineator a Tracing Device , Created a Silhouette
Baptism, 31 Mar 1781, Stuttgart, Neckarkreis, Wuerttemberg, Germany.
Marriage Banns, 24 May 1804, St Andrews, Holburn, London, England. in the presence of Mick Everingham & Susan Huggis
Marriage Notice: Pallot's Marriage Index for England 1780 - 1837, 1804, St Andrews, Holburn, London, England. Name: Charles Schmalcalder
Occupation: Mathmatical Instrument Maker, 1806-1839, Saint Martin In The Fields, Westminster, London, England. 82 The Strand, London,
Patented The Prismatic Compass, on March 5th 1812,
A great deal of his Instruments have been collected in the British Science Museum, Whipple Museum and there are some private collections
6 Little Newport Street, St Annes, Soho London 1806 -
82 The Strand, London 1810 - 1826
Later went to 399/400 the Strand from 1827 -1839
He Retired in 1840
Charles Augustus Schmalcalder had Many Branded Mathmatical Navigational Instruments Sextants, Telescopes, Compasses, Dividers, Theodolites & The Delineator which was a silhouette tracing machine
Charles Schmalcalder filed patent: No 3000 of 22 December 1806 for a Delineator a Tracing Device Created a Silhouette
What is a "Schmalcalder Patent"?
Schmalcalder was not known as a Compass Maker.. so what is it? It was an adaption to the compass for a sighting mechanism. I.E: The Prism, which in viewing through this and a sighting vane you could visually see the direction you were going and corresponding direction at the same time.
The Schmalcalder patent was undoubtedly the most important development in the history of compass making, with the obvious exception of the original invention of the compass. It is still used today unchanged on all the worlds finest prismatic compasses, used by the Military in nearly every country around the world today.
. DataBase: London and Country Directory, 1811.
. DataBase: London Post Office Directory, 1829.
. Illness: Paralysis, 1841-1843, The Strand Union Workhouse, Castle St. (St Pancras). stayed there until he died on the 25th December 1843 at the age of 62
Was Run Over by Horse & Carriage
FRO (Death Ref:): (1 124), dec 25th 1843, The Strand Union Workhouse, Castle St. (St Pancras). buried from the
DataBase: Biography & Genealogy Master Index (BGMI), 1975. Name: Schmalcalder, C
Charles married Ann Cochran on 24 May 1804 in St Andrews, Holburn, London, England.72