File:An apparatus for measuring the relative wear of sole leathers and the results obtained with leather from the different parts of a hide. (1919) (14777077081).jpg

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English:

Identifier: apparatusforme1919147hart (find matches)
Title: An apparatus for measuring the relative wear of sole leathers and the results obtained with leather from the different parts of a hide.
Year: 1919 (1910s)
Authors: Hart, R.W. Bowker, R.C.
Subjects:
Publisher: National Bureau of Standards
Contributing Library: NIST Research Library
Digitizing Sponsor: NIST Research Library

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Text Appearing Before Image:
Fig 4.—Direct reading gravitometer diagrams B, C, and D the results of each individual run may bedistinctly seen as one continuous curve, and the general tendencyin regard to the wear as stated above is shown in each case. Indiagram A, all the points in the other three diagrams are plotted,which gives a broken curve, showing that tests of practically thesame material made at different times did not check. This failureof the machine to check itself caused the changes previouslydiscussed to be made. Test No. 2.—A scoured oak bend was used in this series of tests.The samples in this case were 10 by 5 cm. in size, and when placed
Text Appearing After Image:
137325°—la. (To face page 6.) FlG. 5.—Results of test No. 1 (ordinates indicate loss in wearing tests) Wear Resistance of Sole Leather 7 on the wheel were made to an apparent even thickness by backingthe thinner ones with sheets of metal so that the outer circumfer-ence of the wheel, after all the test pieces were in place, presenteda smooth surface. Twelve pieces were tested at one time. Thesame general scheme of placing the samples on the machine forthis test was carried out as in Test No. i. The results of the tests are given in Fig. 6 and show that thebest wearing portions of the bend are along the backbone edge and

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https://www.flickr.com/photos/internetarchivebookimages/14777077081/

Author Internet Archive Book Images
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Volume
InfoField
1919
Flickr tags
InfoField
  • bookid:apparatusforme1919147hart
  • bookyear:1919
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Hart__R_W_
  • bookauthor:_Bowker__R_C_
  • bookpublisher:National_Bureau_of_Standards
  • bookcontributor:NIST_Research_Library
  • booksponsor:NIST_Research_Library
  • bookleafnumber:16
  • bookcollection:NBSTechnologicPapers
  • bookcollection:NISTresearchlibrary
  • bookcollection:fedlink
  • bookcollection:americana
Flickr posted date
InfoField
29 July 2014
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