File:Electrical instruments and telephones of the U.S. Signal corps (1911) (14753364791).jpg

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Description
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Identifier: electricalinstru00unitrich (find matches)
Title: Electrical instruments and telephones of the U.S. Signal corps
Year: 1911 (1910s)
Authors: United States. Army. Signal Corps
Subjects: Military telegraph -- United States Military telephone -- United States
Publisher: Washington, Govt. print. off.
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

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Text Appearing Before Image:
ided into three compartments as shown in the photo-graphs beloAv. (Figs. 64 and 65.) The whole is contained in a leather case which just fits the box.The transmitter and receiver, with connecting cords terminating inan ebonite plug fitted with three terminals, are contained in cylindricalleather case attached by a strap to the instrument case. The Aveightof the instrument complete is 5^ pounds. The ebonite plug with metal terminals fits into a recess in the sideof the case as shown in photograph. The buzzer is used as a call when it is desired to use the insti-umentas a telephone set. For use on field lines with ground return, connect line to bindingpost D L and the ground connection to E (fig. 66). For use on grounded telegraph lines, connect line to binding post( Z., ground to E. The circuits may be classified as follows: Primaiy circuit Telpgraph. Secondary circuit Telegraph. Transmitter circuit Telephone. Secoudary circuit Telephone. 108 ELECTKICAL I^STKUME^^TS U. S. SIGNAL CORPS.
Text Appearing After Image:
ELECTRICAL INSTRUMENTS U. S. SIGNAL CORPS. 109

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Flickr tags
InfoField
  • bookid:electricalinstru00unitrich
  • bookyear:1911
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:United_States__Army__Signal_Corps
  • booksubject:Military_telegraph____United_States
  • booksubject:Military_telephone____United_States
  • bookpublisher:Washington__Govt__print__off_
  • bookcontributor:University_of_California_Libraries
  • booksponsor:MSN
  • bookleafnumber:111
  • bookcollection:cdl
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014

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