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Identifier: practicaltelepho00pool (find matches)
Title: The practical telephone handbook and guide to the telephonic exchange
Year: 1906 (1900s)
Authors: Poole, Joseph
Subjects: Telephone
Publisher: New York, Macmillan Co.
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Boston Library Consortium Member Libraries

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Fig. 454.—Metal Case C.B. Radial-Arm Instrument(Brtiish Insulated & Helsby Cables) THE BRITISH INSULATED CO.S EXCHANGES 485 merit it has been arranged that the transmitter can be slidbackward and forward to an. extent of about 1J inches so asto accommodate to the face length of any individual. Trunk Exchanges.—The trunk exchange at Carter Lane,London, is described in Chapter XIX. Modifications, however,have been made in this exchange and the improvements have
Text Appearing After Image:
Fig. 455.—Metal Table Instrument. C.B. Adjustable Transmitter (British Insulated & Relsby Cables) also been adopted in the provincial trunk exchanges installedby the British Insulated Co. in the various towns alreadymentioned. The sections of the board are 3-panel ones similarto those shown in Fig. 268, each separated from the next bysingle panels on which are fitted ticket racks, switches, relayand spare receivers for the trunk-line operators, as shown inFig. 456, which shows parts of two 3-panel sections divided by 486 PRACTICAL TELEPHONE HANDBOOK the special panel. In front of the latter is fitted the equipmentfor a telegraph call wire which will be explained later.

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InfoField
  • bookid:practicaltelepho00pool
  • bookyear:1906
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Poole__Joseph
  • booksubject:Telephone
  • bookpublisher:New_York__Macmillan_Co_
  • bookcontributor:Northeastern_University__Snell_Library
  • booksponsor:Boston_Library_Consortium_Member_Libraries
  • bookleafnumber:514
  • bookcollection:northeastern
  • bookcollection:blc
  • bookcollection:americana
Flickr posted date
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27 July 2014

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