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Siemens & Halske AG (or Siemens-Halske) was a German electrical engineering company that later became part of Siemens. It was founded on 12 October 1847 as Telegraphen-Bauanstalt von Siemens & Halske by Werner von Siemens and Johann Georg Halske .
In 1847 Halske founded the Siemens & Halske Telegraph Construction Company together with Werner von Siemens. [1] Halske was particularly involved in the construction and design of electrical equipment such as the press which enabled wires to be insulated with a seamless coat of gutta-percha , the pointer telegraph and the morse telegraph and ...
The mechanical signalling system was designed by Siemens & Halske and used semaphores for the main signals and square boards for the distant signals. Most semaphores had one arm, whilst a small number, which were followed by points, had two arms.
The company, reorganized as Siemens & Halske AG, Siemens-Schuckertwerke and – since 1966 – Siemens AG was later led by his brother Carl, his sons Arnold, Wilhelm, and Carl Friedrich, his grandsons Hermann and Ernst and his great-grandson Peter von Siemens. Siemens AG is one of the largest electrotechnological firms in the world.
Küpfmüller was born in Nuremberg, where he studied at the Ohm-Polytechnikum.After returning from military service in World War I, he worked at the telegraph research division of the German Post in Berlin as a co-worker of Karl Willy Wagner, and, from 1921, he was lead engineer at the central laboratory of Siemens & Halske AG in the same city.
It was powered by two Siemens & Halske alternators rated 30 hp (22 kW), 2 kV at 120 Hz and used 200 series-connected Gaulard 2-kV/20-V step-down transformers provided with a closed magnetic circuit, one for each lamp. Few months later it was followed by the first British AC system, which was put into service at the Grosvenor Gallery, London. It ...
Between 1909 and 1919 he worked as a physicist for Siemens & Halske in Berlin. In 1919 to 1921 he was a physicist and teacher at the Telegraphic Education Center in Stockholm, and between 1921 and 1927 associate professor at the Technical High School in Örebro . Between 1927 and 1945 he worked again for Siemens & Halske.
The Siemens family was first documented in 1384 with Henning Symons, a farmer of the Free imperial city of Goslar in Lower Saxony, Germany.The family tree begins with Ananias Siemens (c. 1538 – 1591), a citizen, brewer and owner of an oil mill in Goslar, belonging to the Shoemaker's Guild, as his ancestors were shoemakers.