Karl Hoecken
Karl Hoecken (born May 31, 1874 in Berlin , † 1962 in Braunschweig ) was a German mechanical engineer.
Hoecken studied geodesy (training as a surveyor) at the Agricultural University in Bonn-Poppelsdorf with his degree in 1896 and from 1903 mathematics and physics at the University of Bonn. In 1906 he became a lecturer in geodesy at the TH Darmstadt and in 1908 at the TH Berlin-Charlottenburg. After a dispute with his professor, he went into industry at the CP Goerz optical institute in Berlin-Friedenau. This manufactured mathematical, photographic, astronomical and generally optical instruments (in 1926 they merged with their competitor Carl Zeiss). From 1914 to 1918 he worked in the Reichswehr Ministry with military equipment. After the war he worked as a consultant for industry and various ministries until 1928.
After the chair for kinematics at the TH Berlin-Charlottenburg, originally held by Franz Reuleaux and his successor Wilhelm Hartmann , was vacant for a long time, Hoecken was one of the interim administrators of the chair from 1930 to 1934 as a lecturer for kinematics and supervisor of the famous machine model collection, the he also cataloged. Hoecken employment ended in 1934. The reasons were possibly that he was arguable with his colleagues and superiors (he was also a social democrat). Rudolf Franke (1870–1962) then took over the chair before Hermann Alt took over the chair (full professorship from 1939).
During the Second World War, Hoecken worked again for the military. In 1946 he moved to Braunschweig with his family. He applied there again for a lectureship in kinematics, but was not accepted.
He published, among other things, on transmission science, photography (distortion in aerial photographs that are not taken vertically, recordings of solar eclipses), the history of calculating machines, cipher machines, aircraft speedometers, ellipsis (he also constructed an ellipsograph). He held several patents and was an expert in mechanical calculating machines and computing aids. He used nomograms in kinematics. The hoe mechanism comes from him .
literature
- Hanfried Kerle: Karl Hoecken (1874–1962), in: Marco Ceccarelli (Ed.), Distinguished Figures in Mechanism and Machine Science, Volume 3, Springer 2014, pp. 115–140
Individual evidence
- ^ Hoecken, Cipher Machines, Der Funker 3 (4), 1924
| personal data | |
|---|---|
| SURNAME | Hoecken, Karl |
| BRIEF DESCRIPTION | German engineer |
| DATE OF BIRTH | May 31, 1874 |
| PLACE OF BIRTH | Berlin |
| DATE OF DEATH | 1962 |
| Place of death | Braunschweig |