File:Electrical instruments and telephones of the U.S. Signal corps (1911) (14569945979).jpg

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Description
English:

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

View Book Page: Book Viewer
About This Book: Catalog Entry
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Text Appearing Before Image:
ht-grained pine or cy-press, and are 13 feet 11 inchesfrom tip to tip. The diameter ofthe pole at the butt is 2 inches, taper-ing to 1., inches where it enters thehead. The butt of each pole is pro-A-ided with a blunt point % incheslong. The top is shaped to fit in ELECTRICAL INSTRUMENTS U. S. SIGNAL CORPS. 293 a galvanized-iron head 3 inches in length. The hitter is threadedto receive a correspondingly threaded galvanized-iron rod, uponwhich is fitted a molded mica insulator. Two dilferent devicesare used for holding the wire upon the insulators. The first is abent galvanized-iron wire appliance called from its shape a pig-tailinsulator. The second is a U-shaped device similarly mounted,called a clamp insulator. The clamp insulator is employed onabout every fifth pole of a lance line, to prevent a longitudinal move-ment of the wire, while the pig-tail insulator is used upon the otherpoles. The lance pole weighs about 7 pounds and the galvanized-ironhead with insulator about 3 pounds.
Text Appearing After Image:
Fi(!. LO:..— lUizzcr eoniKetor, type A. Bvsser connectors.—Model ^1; This form of connector is made ofnickeled steel, and should be used for clipping on the buzzer wireand the 11-strand field wire. Extra studs should be kept on hand forrepairs. These studs screw into the connector and may be removedif necessary. The flexible cord should not be knotted up or twisted,as this tends to break it. A model A connector is shown in figure 203. Model B: This connector is made of brass, with fiber block andsmall steel needle teeth for making contact, and is used with the fieldAvire, field artillery type (double conductor). To use, lay the wire inthe conductor, clamp it, and connect the telephone cord to the bindingpost on either side of the connector. A model B connector is shownin figure 199(^). 294 ELECTRICATi INSTRUMENTS U. S. SIGNAL CORPS. Insfectors pocket l-H.—This kil contains the followinii eqniiMiient,fig. 199 (a) : 1 combined screw-driver and skinninj; knife witli safety sprinj;.

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https://www.flickr.com/photos/internetarchivebookimages/14569945979/

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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:296
  • bookcollection:cdl
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014

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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14569945979. It was reviewed on 18 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

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