Gottfried Hohnbaum

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Gottfried Hohnbaum (full name Johann Gottfried Hohnbaum;, * 1785 , † 1857 ) was a German mechanic and optician .

Life

family

Gottfried Hohnbaum was a son of the superintendent Christian Hohnbaum and brother of the doctor and writer Carl Hohnbaum . His other siblings were

  • Johanna (1776–1804), married to the ducal office secretary Gruner in Coburg
  • Ernst Theodor (presumably died in 1778)
  • Christian (1781–1847), businessman in London, later language teacher in Nuremberg, married to Margaretha Burchart
  • Ernst Friedrich Wilhelm (1783–1808), theology student
  • Caroline, † 1792
  • Heinrich, born in 1790, a merchant in London
  • Julie Christiane (born October 9, 1792) married the archdeacon Christian Heinrich Henkel in Coburg, with whom she had the son and student of medicine Emil Henkel (born January 23, 1819)
  • Caroline, † 1798
  • Charlotte Johanna, who married the pharmacist Hofmann

The Hohnbaum family was in turn related to the engineer and entrepreneur Karl Winkler , who was born in Schwabach, grew up in Nuremberg and later worked in St. Petersburg .

Career

In his youth, during the personal union between Great Britain and Hanover in London , Gottfried Hohnbaum initially trained with Wilhelm Herschel and then worked for several years as an assistant to Edward Troughton . In 1815 he was visited in London by the later Göttingen university mechanic Friedrich Ludwig Apel , whom Hohnbaum instructed in London. As a result, Apel was soon able to send a travel report to the Minister von Munster in which the English and German working methods were compared.

Together with Apel, Hohnbaum returned from England to the mainland in February 1816. After a life-threatening journey across the English Channel on a sailing ship that was driven back and forth in a 6-day storm, the two arrived at the mouth of the Meuse and landed in Brielle in the Netherlands, from where they left on February 29th arrived together in Göttingen . Hohnbaum stayed there only for a short time and then settled in Hanover.

After Hohnbaum had got to know the first kaleidoscopes invented by David Brewster in England , he built them - according to Friedrich Sickler in the Morgenblatt for educated classes - in Hanover and offered them - according to the journal Annalen der Physik as early as 1818 with the title “ Hofmechanicus “Excellent - for 3 Thaler the piece.

Having come “across the sea” after his return from London - as Friedrich Rückert wrote in his correspondence with the Hohnbaum family - Gottfried Hohnbaum had also brought him “a very delicious sailor anecdote”.

Already at the beginning of the Kingdom of Hanover , Hohnbaum was listed as "Hof Mechanicus" in the Hanover state calendar for the year 1819. According to the Hanover address book of the same year, however , he shared the title with the optician and court mechanic Ernst Hennigs . The same directory named the house “Rothenzeile 372” in the Calenberger Neustadt as the residence of Hohnbaum .

In 1820 the Hanoverian clergyman and astronomer Dr. Luthmer about an " achromatic comet finder " specially made for him by Hohnbaum .

During a meeting of the Astronomical Society in London on June 11, 1830, a letter from the military scientist and geodesist Friedrich Hartmann to JTW Herschel was reported with the "description of an instrument that the optician Hohnbaum in Hanover made for him according to his instructions." To further refine such measuring instruments, Hohnbaum wrote a letter in Hanover, dated October 9, 1832, to the astronomer and geodesist Heinrich Christian Schumacher , which he published and commented on in the specialist journal Astronomische Nachrichten , which he published, and which also included a letter from Hartmann. In particular, the Hohnbaum “dividing machine” was compared with the theodolite of the measuring instrument maker Traugott Ertel . The target points of the comparative measurements by Hartmann were the steeple of Hainholz , Isernhagen , the tower of the Hanoverian Aegidienkirche , the Begin tower at the armory and the tower of the Neustädter Hof- und Stadtkirche St. Johannis .

From 1835 to 1837 Hohnbaum studied at the Polytechnic School in Hanover, the royal seat of the kingdom of the same name . During this time he already took part in one of the first provincial exhibitions of the trade association for the Kingdom of Hanover as an exhibitor and Königlich Hannoverscher Hof mechanic from June to July 1836 in Hildesheim . He was awarded a medal, among other things , for the weighbridge he designed and shown there .

In 1843, Hohnbaum offered "rotary devices" made for doctors to be transported in boxes for 7 to 8 Louis d'or .

In 1844, Hohnbaum's improved fire engine , which was shown at a further trade exhibition, found media coverage beyond national borders, for example in a description in Dingler's Polytechnic Journal .

literature

Archival material

Archival material by and about Gottfried Hohnbaum can be found, for example

  • under the title The fire engines manufactured by the Hofmechanicus Hohnbaum in Hanover as well as by the syringe manufacturer L. Herholtz in Ülzen and the machine manufacturer G. Jahn in Dessau , files dating from 1831 to 1859 in the Lower Saxony State Archives (Hanover location) , archive signature NLA HA Hann . 80 Hildesheim No. 03987 (old archive signature E No. 240 )

Individual evidence

  1. ^ A b Karl Karmarsch : The polytechnic school in Hanover. With three sheets of pictures of the institution's building . Hahn'sche Hofbuchhandlung, Hanover 1856, p. 250; Digitized via Google books
  2. ^ A b Communications of the Association for the History of the City of Nuremberg , Volume 96, Association for the History of the City of Nuremberg, 2009, p. 234; limited preview in Google Book search
  3. ^ Rüdiger Rückert (Ed.): Briefe / Friedrich Rückert (= publications of the Rückert Society eV Schweinfurt , special volume), Volume 2, 1977, p. 1484; limited preview in Google Book search
  4. ^ A b Franz von Paula Gruithuisen : Analects for Erd- und Himmels-Kunde , Issue 7, Munich: Joh. Palm'sche Buchhandlung, 1831, p. 56; Digitized via Google books
  5. ↑ a b Dittker Slark : On Friedrich Rückert's footsteps in Franconia , part 1, Darmstadt: Linnig, 2010, ISBN 978-3-925591-28-0 , p. 150f .; limited preview in Google Book search
  6. ↑ a b c d e f g h i Writings of the Association for Saxony-Meiningische Geschichte and Landeskunde , Volume 53, Hildburghausen: Gadow, p. 99; limited preview in Google Book search
  7. ↑ a b Kaleisdoscope of D. Burster in London, made by Hofmechanikus Hohnbaum in Hanover , in: Morgenblatt für educated estates , twelfth year, Tübingen: JG Cotta'sche Buchhandlung, May 1818, p. 582f .; Digitized via Google books
  8. ^ A b Daniel Johann Jakob Luthmer: Astronomical Remarks, from the preacher Dr. Luthmer in Hanover , in Johann Elert Bode (Hrsg.): Astronomisches Jahrbuch for the year 1823 together with a collection of the latest treatises, observations and news that are relevant to the astronomical sciences, calculated and published with the permission of the Royal Academy of Sciences, Berlin: at the Author and on commission from Ferdinand Dümmler, printed by CFE Spaten, 1820, p. 194; Digitized via Google books
  9. ↑ a b German Mechaniker-Zeitung. Journal of the German Society for Mechanics and Optics. Organ for the entire glass instrument industry , Berlin: Springer Verlag, 1907, pp. 131, 163; Preview over google books
  10. ↑ Ludwig Wilhelm Gilbert: Annalen der Physik , New Series, Volume 29, Leipzig: Joh. Ambrosius Barth, 1818, p. 371; Digitized via Google books
  11. ^ Royal British Hanover State Calendar to the year 1819 , Lauenburg: Berenbergsche Buchdruckerei, 1819, p. 84; Digitized via Google books
  12. ↑ Reinhard Oberschelp : ... see and distinguish all objects precisely ...: Eye glasses through the ages (= reading room , booklet 11), Hameln: Niemeyer, 2004, ISBN 978-3-8271-8811-3 , p. 19 ; limited preview in Google Book search
  13. ^ Hannoversches Adress-Buch for the year 1819. With the most gracious permission , Section 1: Alphabetical list of the local residents with comments on their business, the streets in which they live and the house number , Hanover: Printed and published by SL Lamminger and Rosenbusch, 1819, P. 50; Digitized version of the Gottfried Wilhelm Leibniz Library - Lower Saxony State Library via the German Research Foundation
  14. ^ Keyword Rote Reihe in: Sources and representations on the history of Lower Saxony , Volume 75, Ed .: Historischer Verein für Niedersachsen, Hildesheim: August Lax, 1969, pp. 164, 119; limited preview in Google Book search
  15. ↑ Astronomische Nachrichten , issue 235, printed in volume 10, columns 307-312; Digitized via Google books
  16. ↑ Mittheilungen of the trade association for the Kingdom of Hanover , Volumes 8-14, p. 283 and others; Digitized via Google books
  17. ↑ Georg Philipp Holscher (Ed.): Hannoversche Annalen for the entire medicine . A magazine , new series, third year, Hanover: Verlag der Hahn'schen Hof-Buchhandlung, 1843, p. 503; Digitized via Google books
  18. ↑ Dinglers Polytechnisches Journal , Volume 44, 1844, pp. 419f .; Digitized via Google books
  19. ↑ Compare the information in the Arcinsys Lower Saxony Bremen archive information system
personal data
SURNAME Hohnbaum, Gottfried
ALTERNATIVE NAMES Hohnbaum, Johann Gottfried (full name)
BRIEF DESCRIPTION German mechanic and supplier to the Royal Hanover Court
DATE OF BIRTH 1785
DATE OF DEATH 1857