File:Cross tie forms and rail fastenings with special reference to treated timbers (1904) (14758586944).jpg

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English:

Identifier: crosstieformsrai50vons (find matches)
Title: Cross tie forms and rail fastenings with special reference to treated timbers
Year: 1904 (1900s)
Authors: Von Schrenk, Hermann, 1873-1953
Subjects: Railroads Ties Wood Preservation
Publisher: Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Forestry
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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Text Appearing Before Image:
Fig. 42.—Ordinary method of inserting screw-spikes by means of a key operated by two men. line. When a tie is ready to be laid, the screw-spike is dipped in tar oil(of which each section crew has a bucket on its car) or tar oil is pouredinto the hole, and it is placed in the hole, the larger opening at the top PULLING STRENGTH OF COMMON AND SCREW SPIKES. 51 of this hole allowing the screw to drop into it so as to stand practicallyvertical. The key is then applied and the screw is turned in by twomen, as shown in fig. 42. Great care is taken in making the tinal turn
Text Appearing After Image:
Fig. 43.—Manner Jn which the screw-spikes are used. of the screw not to turn it too far, which would destroy the threadmade in the wood. When it becomes necessary to unscrew any of thespikes, either for the purpose of moving the tie along to secure its proper spacing after severalyears service or for the pur-pose of inserting a tie-plate,one or two turns are made soas to allow the rail to springup, and when the tie has beenmoved, or the plate inserted,the screw is once more firmlybedded. The manner of in-serting screws alternately,first one and then two per tie,is shown in fig. 43, and also infig. 41, h. The two screws onthe inside always correspondto one on the outside and viceversa, and if there are twoscrews on the inside of onerail there will be one screw on the inside of the other rail on the same tie.This may be seen in fig. 43, showing a French track with the ballast

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https://www.flickr.com/photos/internetarchivebookimages/14758586944/

Author Internet Archive Book Images
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(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.
Volume
InfoField
no.50
Flickr tags
InfoField
  • bookid:crosstieformsrai50vons
  • bookyear:1904
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Von_Schrenk__Hermann__1873_1953
  • booksubject:Railroads_Ties
  • booksubject:Wood_Preservation
  • bookpublisher:Washington__D_C____U_S__Dept__of_Agriculture__Bureau_of_Forestry
  • bookcontributor:U_S__Department_of_Agriculture__National_Agricultural_Library
  • booksponsor:U_S__Department_of_Agriculture__National_Agricultural_Library
  • bookleafnumber:62
  • bookcollection:usda-bulletinforestservice
  • bookcollection:usdanationalagriculturallibrary
  • bookcollection:fedlink
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014



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