Trajan's knight house

from Wikipedia, the free encyclopedia

Hermann Trajan Ritterhaus (* 15. June 1843 in Dortmund , † 28. February 1899 in Dresden ) was a university professor of mechanical engineering .

Life

Trajan Rittershaus attended grammar school and the first-class secondary school in Dortmund. In 1861 he began studying engineering at the Koblenz provincial trade school. He interrupted his studies for a year of practical work in the repair workshop of the Cologne-Minden Railway Company and then went to the Polytechnic in Zurich . Here he joined the Corps Rhenania . He was a member of a six-member commission of the student body of the Polytechnic, which on July 27, 1864, in a written declaration, which was distributed as a leaflet a day later, the management of the Federal Polytechnic announced the resignation of Professor Bolley from the directorate and the withdrawal of expulsions demanded. The demands of the commission, supported by the signatures of 350 students, were rejected. The members of the commission were expelled from the school board. When the relegations were not withdrawn, on August 2, 1864, the students from the Polytechnic moved out to Rapperswil.

After his relegation he followed Franz Reuleaux , professor at the Polytechnic in Zurich, who had received a call to the Berlin Business Academy in 1864 , to Berlin, where he also attended lectures in mathematics at the Friedrich Wilhelms University . After completing his studies in Berlin, he went to England to study at various universities of mechanical engineering.

After completing his military service, he received an assistant position for machine design at the Gewerbeakademie Berlin in 1868, then switched to industry as a designer in the machine tool factory Gschwindt & Zimmermann in Karlsruhe and in 1871 returned to his old assistant position in Berlin, where he worked for kinematics and related things in 1873 Subjects habilitation. Just one year later, he received a call to the Royal Saxon Polytechnic in Dresden as an associate professor for kinematics and mechanical engineering related subjects. In 1882 he became a full professor. As the first professor at a technical university, he included the design theory of electrical machines in his teaching program.

Trajan Rittershaus is buried in the Trinity Cemetery in Dresden.

Scientific achievement

Inspired by the work of Franz Reuleaux, which he later summarized in the theory of mechanical engineering or kinematics , Rittershaus developed mathematical solutions for complicated movements in mechanical engineering:

  • 1874, Die Ellipsographen , published in the negotiations of the Association for the Promotion of Industry in Prussia
  • 1876, The Kinematic Chain published in Civilingenieur
  • 1877, The straight guiding of Watt's parallelogram published in the journal of the Association of German Engineers
  • 1878, The kinematic-geometric theory of accelerations , published ibid
  • 1879, The acceleration at the crank mechanism, particularly important for the determination of mass effects on steam engines , published there
  • 1879 and 1880, Die Kraftvermittler , published in Civilingenieur
  • 1880, The Interference Crank Chain , published ibid
  • 1883, The crank acceleration curve , published in the magazine of the Association of German Engineers

With the advent of mechanical power generation for lighting purposes, Rittershaus recognized not only its great importance with the help of dynamo machines for lighting purposes, but also generally for energy transmission. Rittershaus made the further development of electrical engineering the task of mechanical engineering and part of the disciplines of mechanical engineering at technical universities.

In an obituary, the professors of the Dresden University of Technology honored his scientific work with the words: To his lively research and his extensive knowledge of scientific literature, machine science, especially kinematics, regulation theory and electromechanics, owes numerous fundamental works, through which he demonstrated new relationships and new methods introduced .

Honors

  • In 1891 Trajan Rittershaus was awarded the Knight's Cross First Class of the Saxon Order of Albrecht .
  • In Dresden-Tolkewitz the Rittershausstrasse was named after him .

literature

Individual evidence

  1. ^ 150 years of Corps Rhenania Zurich-Aachen-Braunschweig, 1855-2005 , Braunschweig 2005, p. 305
  2. ^ 150 years of Corps Rhenania Zurich-Aachen-Braunschweig, 1855-2005 , Braunschweig 2005, pp. 30–36
  3. ↑ Todtenschau . In: Dresdner Geschichtsblätter , No. 3, 1899, p. 200.
  4. ↑ Official communications. In: Zentralblatt der Bauverwaltung, Volume 11, No. 18 (May 2, 1891), p. 176
  5. ^ Streets and squares in Tolkewitz
personal data
SURNAME Knight's House, Trajan
ALTERNATIVE NAMES Knight's House, Hermann Trajan
BRIEF DESCRIPTION German university lecturer in mechanical engineering
DATE OF BIRTH June 15, 1843
PLACE OF BIRTH Dortmund
DATE OF DEATH February 28, 1899
Place of death Dresden