File:Operation of trains and station work and telegraphy (1914) (14760778052).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (3,600 × 1,908 pixels, file size: 591 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English:

Identifier: operationoftrain00prio (find matches)
Title: Operation of trains and station work and telegraphy
Year: 1914 (1910s)
Authors: Prior, Frederick John, 1858- comp
Subjects: Railroads Trainmen
Publisher: Chicago, F. J. Drake
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
d the perpendicular bars have no connection,space enough is allowed for a sheet of writing paper toplay freely between them. GROUND WIRE. Every office is supplied with a ground wire whichconsists of a wire attached to a rod driven several feetin the ground, or to a gas or water pipe, the twro latterbeing preferable. The rod of iron should be filed orscraped bright and clean for several inches, and insulatedcopper wire spliced to: five or six feet of bare copperwire wrapped evenly around the brightened part of therod, then tightly secured and soldered. Only theterminal ground wires are in use upon a line; their useat the intermediate offices is only for testing purposesand in case of interruption of the line to notify thetesting operator and receive his instructions. The in-termediate stations upon inserting a ground wire divideit into two independent circuits; there must be a mainline battery at each terminus in order that the two cir-cuits may work on either side of it. 34 TELEGRAPHY
Text Appearing After Image:
SWITCH BOARD CONNECTIONS. A A A A i i i i Ground. £ -O.-O. Inst. No. 1 £ -o. Inst. No. 2 Inst. No. i on Line No. I.Inst. No. 2 on Line No. 2. -i i i i Ground- £ .o. -o. Inst. No. 1 £ -O. -o. Inst. No. 2 No. i cut out with inst. pins.No. 2 cut out at the bottom.35 l-«-J 36 TELEGRAPHY !1 Ground. £ -O.-O. Inst. No. 1 £ Inst. No. 2 O O Inst. Xo. l on No. i W. to No. 2 E.Ground on Xo. I E. and Xo. 2 W Ground. £ Inst. No. 1 £ Inst. No. 2 A A A A i i i . 4 1 ) o ( > # 1 > Inst. No. i on Xo. i E. to Xo. 2 W., Ground on No. I W.Inst. No. 2 on NTo. 2 E. to Ground. TELEGRAPHY 37 Ground. * Inst. No. 1 £ lust. No. 2 * a o o o o .o.-o.-o. No. i W. to No. 2 E., Xo. i E. to Xo. 2 W.Insts. on both circuits. Ground. £ Inst. No. 1 £ Inst. No. 2 a 1 > ( l c 0 ca > 0 i ) > ( 4 i .0 -o-o-o-oo Spare O Both Insts. on Line No. I. No. 2 open at the bottom. 3» TELEGRAPHY -1-. n CD Inst. No. 1 w CZD Inst. No. 2 —0 o o o o u o o n :;; • Inst. No. i

Note About Images

Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Date
Source

https://www.flickr.com/photos/internetarchivebookimages/14760778052/

Author Prior, Frederick John, 1858- comp
Permission
(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Flickr tags
InfoField
  • bookid:operationoftrain00prio
  • bookyear:1914
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Prior__Frederick_John__1858__comp
  • booksubject:Railroads
  • booksubject:Trainmen
  • bookpublisher:Chicago__F__J__Drake
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:553
  • bookcollection:library_of_congress
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014



Licensing

[edit]
This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as:
  1. The copyright is in the public domain because it has expired;
  2. The copyright was injected into the public domain for other reasons, such as failure to adhere to required formalities or conditions;
  3. The institution owns the copyright but is not interested in exercising control; or
  4. The institution has legal rights sufficient to authorize others to use the work without restrictions.

More information can be found at https://flickr.com/commons/usage/.

Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information.
This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14760778052. It was reviewed on 16 October 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

16 October 2015

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:01, 16 October 2015Thumbnail for version as of 14:01, 16 October 20153,600 × 1,908 (591 KB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
12:48, 16 October 2015Thumbnail for version as of 12:48, 16 October 20151,908 × 3,604 (596 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': operationoftrain00prio ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Foperationoftrain00prio%2F fin...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Operation_of_trains_and_station_work_and_telegraphy_(1914)_(14760778052).jpg&oldid=883352046"