Jakob Christof Rad
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![]() | You can help expand this article with text translated from the corresponding article in Czech. (October 2012) Click [show] for important translation instructions.
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![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Jakub_Kry%C5%A1tof_Rad_a_Juliana_Radov%C3%A1.jpg/220px-Jakub_Kry%C5%A1tof_Rad_a_Juliana_Radov%C3%A1.jpg)
Jakub Kryštof Rad, born March 25, 1799 in Rheinfelden (present day Switzerland), died October 13, 1871 in Vienna (present day Austria), was a Swiss-born physician and industrial manager of Czech-descent. Sometimes appearing as the Anglicised, Jacob Christoph, Rad, among many other professional activities, was a director of a sugar factory in Datschitz in Moravia in 1843, and invented the process and associated machinery for cutting large block sugar into manageable uniform pieces (and so is credited with "invention" of the sugar cubes).
Early life and education
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Professional life
This section needs expansion with: other significant areas of his professional life, with reliable sourcing, including his medical and other industrial management activities, so that this article does not remain, just of further retelling of the apocryphal, largely trivial story of the "discovery" of sugar cubes. You can help by adding to it. (July 2015) |
Invention of the sugar-cutting process
The idea to produce sugar in cube form came from his wife, who cut herself while paring down the standard large, commercial sugar loaf into smaller parts for use in the home. Rad had become involved with management of a sugar factory in 1840 (in Datschitz, present day Dačice, in Moravia, a part of the Habsburg empire). He began work on a machine for transforming sugar into cube form, leading to a five-year patent for the cube press he invented, granted on January 23, 1843.
Personal life
Rad was father of 16 children. He died in 1871 in Vienna.
References
Further reading
- Late 18th century Swedish sugar chest (display) referencing Rad's invention, at Deutches Technikmuseum.
- Template:De icon M. Habacher: "Rad Jakob Christof". In: Österreichisches Biographisches Lexikon 1815–1950 (ÖBL). Vol. 8, Austrian Academy of Sciences, Vienna 1983, ISBN 3-7001-0187-2, p. 366 f. (Direct links to "p. 366", "p. 367"), see also [1], accessed 7 July 2015.
- Template:De icon Was ist Zucker ? at the Wayback Machine (archived February 12, 2005)
- Template:De icon DZDF/Museum Dačice: Würfelzucker
- Template:De icon Archiv Reinhard Lämmel
- Template:De icon Würfelzucker
- http://www.wissenschaftskalender.at/text/index.aspx?D=1310[dead link]