Telephone sets in the changing times  - Germany / German Democratic Republic Set Image kindly provided by Brickset

Telephone sets in the changing times - Germany / German Democratic Republic Set


Theme: Communication & Media
CountryGermany / German Democratic Republic
Colorbrown grey
Item TypeSet
Chronological Issue Number2968
Chronological ChapterGER-DDR
SID366099
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Telephone sets in the changing times With the depictions of telephone sets over the ages, the Ministry of Posts and Telecommunications of the German Democratic Republic is issuing four multicolored special postage stamps, one after the other, in unison. Special cancellations from February 7 to April 6, 1989 Telephone sets through the ages This series of stamps introduces telephone sets from the first half century of their development. In addition to the phone of Philipp Reis (1834-1874), which did not come to practical use, three of the German Reichspost used local battery devices (power supply by batteries at the subscriber) are shown. On the 10-pfennig value are the donor and recipient of Philipp Reis, the inventor of the phone, which he presented on October 26, 1861 in the Physical Association of Frankfurt / Main in a lecture of the public. The donor in the background caused a circuit to be opened and closed in the rhythm of sound waves picked up by the sonic tube via a platinum contact attached to the membrane of the pig's small intestine. The button on the side of the wooden box and the electromagnet were used for call signaling. As a receiver rice used a coil of insulated copper wire with a knitting needle as an iron core, in which by the donor outgoing current fluctuations magnetic changes were caused and thus the sounds were audible again. Base plate and cover of the receiver as a sounding board were used to increase the clarity. The importance of Reis's invention was not recognized at the time. Although, in particular, the donor worked insecure, Reis has proved with his phone the possibility of an electrical transmission of human language. The American Alexander Graham Bell (1847-1922) perfected the idea of ​​Philipp Reis and constructed the first practical telephone. Two of these apparatuses received in October 1877, the Postmaster General Heinrich von Stephan (1831-1897), who recognized the importance of the invention after the first attempts and ordered their immediate introduction to the Deutsche Reichspost. He also replaced the previous term "telephone" by the word "telephone". While the improved from the Werner von Siemens (1816-1892) Bell telephone systems were initially used to transmit telegrams on telegraph lines, the establishment of the first city telephone facilities in Berlin 1881 led to constructive and functional changes due to the new demands on the apparatus. The telephone sets presented on this series of stamps as well as others from these and later stages of development can be viewed in the postal museum of the GDR.

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Telephone sets in the changing times With the depictions of telephone sets over the ages, the Ministry of Posts and Telecommunications of the German Democratic Republic is issuing four multicolored special postage stamps, one after the other, in unison. Special cancellations from February 7 to April 6, 1989 Telephone sets through the ages This series of stamps introduces telephone sets from the first half century of their development. In addition to the phone of Philipp Reis (1834-1874), which did not come to practical use, three of the German Reichspost used local battery devices (power supply by batteries at the subscriber) are shown. On the 10-pfennig value are the donor and recipient of Philipp Reis, the inventor of the phone, which he presented on October 26, 1861 in the Physical Association of Frankfurt / Main in a lecture of the public. The donor in the background caused a circuit to be opened and closed in the rhythm of sound waves picked up by the sonic tube via a platinum contact attached to the membrane of the pig's small intestine. The button on the side of the wooden box and the electromagnet were used for call signaling. As a receiver rice used a coil of insulated copper wire with a knitting needle as an iron core, in which by the donor outgoing current fluctuations magnetic changes were caused and thus the sounds were audible again. Base plate and cover of the receiver as a sounding board were used to increase the clarity. The importance of Reis's invention was not recognized at the time. Although, in particular, the donor worked insecure, Reis has proved with his phone the possibility of an electrical transmission of human language. The American Alexander Graham Bell (1847-1922) perfected the idea of ​​Philipp Reis and constructed the first practical telephone. Two of these apparatuses received in October 1877, the Postmaster General Heinrich von Stephan (1831-1897), who recognized the importance of the invention after the first attempts and ordered their immediate introduction to the Deutsche Reichspost. He also replaced the previous term "telephone" by the word "telephone". While the improved from the Werner von Siemens (1816-1892) Bell telephone systems were initially used to transmit telegrams on telegraph lines, the establishment of the first city telephone facilities in Berlin 1881 led to constructive and functional changes due to the new demands on the apparatus. The telephone sets presented on this series of stamps as well as others from these and later stages of development can be viewed in the postal museum of the GDR..