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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.
After completing his studies, he worked at Fein in Stuttgart and from 1883 he worked at Siemens & Halske in Berlin.The company sent Kessler to Tokyo in 1887 as an electrical engineer, there he built up Siemens' East Asia and Japanese business and as general representative of the subsidiary "Siemens & Halske, Japan Agency" which was founded in 1893. [1]
Railcar 5 and sidecar 20 in front of the Grenzstraße depot, around 1910 Course of the Nonnendamm line (blue) in the Spandau streetcar network. The Electric Tramway Spandau-Nonnendamm GmbH (SpN) – colloquially known as Nonnendammbahn – was a tramway company that operated between 1909 and 1914, originating from a tram line established by Siemens & Halske in 1908.
He is perhaps most famous for single-handedly decrypting an early version of the German cipher machine Siemens and Halske T52 in a matter of two weeks during 1940, using only pen and paper. This machine's cipher is generally considered to be more complicated than that of the more famous Enigma machine .
The Phoebus cartel was an international cartel that controlled the manufacture and sale of incandescent light bulbs in much of Europe and North America between 1925 and 1939. . The cartel took over market territories and lowered the useful life of such bulbs, which is commonly cited as an example of planned obsolescen
Werner von Siemens had presented the first electric passenger train at the Berlin industrial exhibition two years before. In order to develop the concept, he received the official approval to run an electric tramway line on already existing tracks, which had been used for building the Prussian military academy (Hauptkadettenanstalt) at Lichterfelde West.