File:Electrical instruments and telephones of the U.S. Signal corps (1911) (14753346281).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

View Book Page: Book Viewer
About This Book: Catalog Entry
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Text Appearing Before Image:
led for fire-control installations and thepost-telephone systems of coast artilleiv posts. A semiannual report is required, showing the condition of the cellsat time of the report, number of times charged and discharged, thevoltages of cells, specific gravity, amperage of last charge, and testsof electrolvte. ELECTEICAL INSTRUMENTS U. S. SIGNAL CORPS. 57 Form 2G3 is provided for submitting this report. A storage-battery record book is provided in every fire-controlswitchboard room for recording the readings necessary for the opera-tion and maintenance of the batteries. Data showing daily specificgravity and temperature readings. Aveekly end-cell voltage readings,and information regarding the pilot cell and any special work doneon each cell. shoAvn by weekly insjx^ction. and the specific gravity andvoltage for each cell immediately after each charge. No records or reports are required from interior posts, but it isrecommended that for each storai>e-batterv installation a set of rec-
Text Appearing After Image:
Fic. 10.— Duro Viattery used for field service. ords be maintained, showing the information which the instructionsin this chapter have indicated are necessary for proper maintenanceand operation. DURO PORTABLE STORAGE BATTERIES, FOR USE WITH WIRELESS PACKSETS, U. S. SIGNAL CORPS. For use with field Avireless pack sets the Signal Corps is noAvfurnishing the Duro portable storage battery. These batteriescome in sets of four cells each, of 20 and GO ampere capacity, rated on 58 ELECTRICAL INSTRUMENTS U. S. SIGNAL CORPS. 1 ampere discharge rate. The jars for these cells are made of hardrubber, so constructed as to meet the requirements of a portable bat-tery. The four cells comprising the battery are encased in a case ofsolid cold rolled and tinned copper, which is lead-lined around thetop to a point 2^ inches beloM the same, and has a steel bottom.Between the jars and the case is an insulating wall of semi-soft waxto act as a protecting cushion. A carrying handle of strong 3-plyrubber

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  • 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:60
  • bookcollection:cdl
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014

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