Erhard Hann

Erhard Hann (* 1400 Zabern in Alsace ; † 1460 ) was a German master gunsmith , mining engineer and inventor of the Heinz art .

Life

Replica of a Heinzenkunst with an artificial bike in the Deutsches Museum

Replica in the Deutsches Museum: Detail of balls and pipe tour

Erhard Hann was a master gunsmith in the service of the following Archbishops of Salzburg from 1425 to 1459 : Eberhard III. von Neuhaus , Eberhard IV. von Starhemberg , Johann II. von Reisberg , Friedrich IV. Truchsess von Emmerberg and Sigismund I von Volkersdorf .

In 696 Theodo II donated a third of the Bad Reichenhall salt works to the diocese of Salzburg under Rupert von Salzburg . The bishops of Salzburg as Hanns masters generated a substantial part of their income as Siedherren in which it from the salt dome in brine graded salt dissolved and brought thus into a marketable form. Until 1438 the brine was lifted by hand from a ten meter deep shaft. In 1437 Erhard Hann made a model of a bucket pumping station with which he wanted to win the owner consortium of the Reichenhaller Saline for the project of mechanization of lifting work. In Bad Reichenhall in 1437, according to plans by Erhard Hann von Zabern, a bucket chain was installed that ran over a wooden wheel 8 m in diameter and had 64 leather buckets.

In 1437 he offered to build a machine based on a model that had already been made in the Reichenhaller Brunnen, whereby the salted water could be separated from the rest and led into a well room, from which it should run into the brewhouses. This proposal received the applause of both Dukes Ernst , Heinrich XVI. , and Albrecht III. as well as the settlers. However, Hann had to build the machine at his own expense and agree to reimburse the city of Reichenhall for any possible damage if it was not functional. On the other hand, if he succeeded, the city promised him 5000 Hungarian guilders and the construction of a well and the provision of the wood necessary for the construction of the water room and the pipe.

In 1440 the hydraulic system could be put into operation. It was a lump-sum pumping station that was driven by a water wheel. The salt water was led up in a vertical pipe with the help of leather balls (pommels) hanging on a chain. This pumping device was in operation for about 70 years and was then replaced by a similar, somewhat more powerful system from Erasmus Grasser . Until 1873 a similar water lift in Reichenhall pumped the brine. According to the traditions known up to now, the all-inclusive pumping station from Hann was the first water lifting machine of this type. Sketches of similar systems come from later times.

Especially from the 16th century, this type of pump was often used for both pit drainage and drinking water supply.

Individual evidence

^ Friedrich Jaeger: Encyclopedia of the Modern Age: Volume 11, P. 544: Renaissance signature . Springer-Verlag, 2017, ISBN 978-3-476-00060-6 ( google.de [accessed on March 14, 2020]).
↑ See Johann Georg von Lori : Collection of the Baierischen Bergrechts. P. 26, § 1.
^ Mathias von Flurl : Older history of the Saline Reichenhall excellent in technical terms up to the construction of the auxiliary saline Traunstein. Ceremonial speeches, Bavarian Academy of Sciences, Munich 1809, p. 12. [1]
^ Adolf Kleinschroth : The historical development of the brine extraction at Bad Reichenhall. Series of publications by the Frontinus Society, No. 8. Bergisch Gladbach 1985, pp. 92–128. H. Maier: Introduction to the 3rd semester "Historical development of water management and hydraulic engineering in Bavaria". Information report of the Bavarian State Office for Water Management No. 3/1986, Munich, pp. 5–26; Biographical descriptions or lexicon of Salzburg partly deceased , p. 86 ; Ed .: Paul-Gerhard Franke and Adolf Kleinschroth . Brief biographies of hydraulics and hydraulic engineering, in the series Hydraulics and Hydrology, Technical University of Munich , Mitteilungen, Issue No. 48 of the Chair of Hydraulics and Hydrology at TUM . P. 116.

personal data
SURNAME	Hann, Erhard
BRIEF DESCRIPTION	German mining engineer inventor of the lump pumping station
DATE OF BIRTH	1400
PLACE OF BIRTH	Zabern in Alsace
DATE OF DEATH	1460

[1] Friedrich Jaeger: Encyclopedia of the Modern Age: Volume 11, P. 544: Renaissance signature . Springer-Verlag, 2017, ISBN 978-3-476-00060-6 ( google.de [accessed on March 14, 2020]).

[2] See Johann Georg von Lori : Collection of the Baierischen Bergrechts. P. 26, § 1.

[3] Mathias von Flurl : Older history of the Saline Reichenhall excellent in technical terms up to the construction of the auxiliary saline Traunstein. Ceremonial speeches, Bavarian Academy of Sciences, Munich 1809, p. 12. [1]

[4] Adolf Kleinschroth : The historical development of the brine extraction at Bad Reichenhall. Series of publications by the Frontinus Society, No. 8. Bergisch Gladbach 1985, pp. 92–128. H. Maier: Introduction to the 3rd semester "Historical development of water management and hydraulic engineering in Bavaria". Information report of the Bavarian State Office for Water Management No. 3/1986, Munich, pp. 5–26; Biographical descriptions or lexicon of Salzburg partly deceased , p. 86 ; Ed .: Paul-Gerhard Franke and Adolf Kleinschroth . Brief biographies of hydraulics and hydraulic engineering, in the series Hydraulics and Hydrology, Technical University of Munich , Mitteilungen, Issue No. 48 of the Chair of Hydraulics and Hydrology at TUM . P. 116.