File:Bulletin - United States National Museum (1956) (14781545311).jpg

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Identifier: bulletinunitedst2101956unit (find matches)
Title: Bulletin - United States National Museum
Year: 1877 (1870s)
Authors: United States National Museum Smithsonian Institution United States. Dept. of the Interior
Subjects: Science
Publisher: Washington : Smithsonian Institution Press, (etc.) for sale by the Supt. of Docs., U.S. Govt Print. Off.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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four-wheeled car. A hole was bored upthrough the car into the barrel and into it a piece of two-inch tinpipe was fastened, projecting below the platform of the car. It nowbecame necessary to devise some plan to get the water from thetank to the pump and into the boiler around the turns under thecars, and as a series of rigid sections of pipe was not practicable,young Dripps procured four sections of hose two feet long, whichhe had made out of shoe leather by a Bordentown shoemaker.These were attached to the pipes and securely fastened by bandsof waxed thread. The hogshead was filled with water, a supply ofwood for fuel was obtained, and the engine and tender were readyfor work. The distance between the two main axles on the locomo-tive is just 5 feet, and the gauge is 56V2 inches. The overalllength of the locomotive, including the pilot, is 25 feet; of thetender, 12 feet. Watkins has given the cylinder bore as 9 inches, a figurealso used by C. F. Dendy Marshall in his Two Essays in 40
Text Appearing After Image:
Figure 30. — Another pre-1 900 view of John Bull, which was built in England by Stephenson in 1831. Early Locomotive History, and by J. G. H. Warren in hisA Century of Locomotive Building, both excellent pub-lications. In fact, however, the cylinder bore of the John Bullwas recently measured and found to be 11 inches. The strokeof 20 inches as cited by all is correct. Many changes, some minor and some major, were incor-porated in the John Bull during the next few years. The mostnoticeable was the addition of a 2-wheeled pilot, suggested in1832 by Robert L. Stevens to guide the locomotive aroundthe sharp curves common in the tracks of that era. In orderto attach the pilot to the front axle, the outside rods andcranks connecting the front and back axles had to be perma-nently removed, thus reducing the number of drivers fromfour to two. The John Bull has ever since been driven by onlythe two rear wheels (figure 30). The wheels of the pilot are29 inches in diameter. Another early perma

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https://www.flickr.com/photos/internetarchivebookimages/14781545311/

Author Internet Archive Book Images
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Volume
InfoField
1956
Flickr tags
InfoField
  • bookid:bulletinunitedst2101956unit
  • bookyear:1877
  • bookdecade:1870
  • bookcentury:1800
  • bookauthor:United_States_National_Museum
  • bookauthor:Smithsonian_Institution
  • bookauthor:United_States__Dept__of_the_Interior
  • booksubject:Science
  • bookpublisher:Washington___Smithsonian_Institution_Press___etc__
  • bookpublisher:_for_sale_by_the_Supt__of_Docs___U_S__Govt_Print__Off_
  • bookcontributor:Smithsonian_Institution_Libraries
  • booksponsor:Smithsonian
  • bookleafnumber:48
  • bookcollection:biodiversity
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Smithsonian_Libraries
Flickr posted date
InfoField
30 July 2014


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21 September 2015

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