Jakob Christof Rad

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Jakob Christof Rad and Juliana Rad

Jakob Christof Rad, traditionally Anglicised Jacob Christoph Rad (25 March 1799, in Rheinfelden – 13 October 1871, in Vienna), was a Swiss-born physician and industrial manager. He had many other professional activities, was a director of a sugar factory in Datschitz, Moravia, Austria-Hungary (now Czech Republic) in 1843, and invented the process and associated machinery for cutting large block sugar into manageable uniform pieces. Rad is credited with the invention of sugar cubes.

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 . (July 2015)

Invention of the sugar-cutting process[]

Jakob Christof Rad is credited with the invention of sugar cubes

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 the Moravian town of Datschitz (present day Dačice). 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 23 January 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.
• (in German) 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.
• (in German) Was ist Zucker ? at the Wayback Machine (archived February 12, 2005)
• (in German) DZDF/Museum Dačice: Würfelzucker
• (in German) Archiv Reinhard Lämmel
• (in German) Würfelzucker
• https://archive.is/20070828175054/http://www.wissenschaftskalender.at/text/index.aspx?D=1310

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