File:The steam-engine and other heat-motors (1909) (14582489460).jpg

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Identifier: steamengineother01crei (find matches)
Title: The steam-engine and other heat-motors
Year: 1909 (1900s)
Authors: Creighton, William Henry Paul, 1859-
Subjects: Steam-engines Heat-engines
Publisher: New York, J. Wiley & sons (etc., etc.)
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Text Appearing Before Image:
nced valves. The valve is balanced by working it betweenparallel scraped plates (Fig. 183), so that the steam does not getto the back of the valve. In piston-valves (Fig. 182) the pressuredue to the steam is balanced, leaving the friction of the packingrings to be provided for. The travel of the valve is diminished by the use of doubleports or by the use of auxiliary passages in the valve. In theAllen or Trick valve (Fig. 183) the steam enters the cylinder notonly directly past the valve-edge, but also through a port-passagein the valve itself. Draw the Zeuner or Bilgram diagrams for the following examples. Ex. 119. Width of port, 5/8 in.; length of port, 12 in.; steam-lap,9/16 in.; exhaust-lap: head end —1/8 in., crank end 0 in.; L/R=6:eccentric-arm infinite; engine, 14X20; 210 revolutions, double-ported. Ex. 120. Width of port, 1 in.; length, 9 in.; steam-lap, 3/4 in.;steam-lead increases from 1/16 in. to 1/6 in. at maximum cut-off; * See Power, Nov., 1906. REVOLUTION CONTROL. 351
Text Appearing After Image:
352 THE STEAM-ENGINE AND OTHER HEAT-MOTORS. length of eccentric or swinging arm, 14 in.; its center is on the line ofcenters of shaft and crank-pin when the latter is on a dead-center. Ex. 121. Width of port, If in.; length, 8 in.; 9X10 engine;300 revolutions; steam-lap, 1 in.; exhaust-lap, 5/16 in.; throw ofeccentric varies from If\ to 1 in.; length of swinging arm, 6J in., andits center is 5/8 in. below the line of centers of the shaft and crank-pinwhen the latter is on its dead-center. Ex. 122. What change would be made if the valve took steam onits inside edges instead of the outside? Ex. 123. What changes would be made if the eccentric drove thevalve through a reverse-lever? Ex. 124. Could this reverse-lever be designed to give equality ofcut-off and equal lead at the important point of cut-off with equalsteam-laps? Link Motion.—The Stephenson link is in common use in thiscountry and in England, whilst on the Continent the Gooch link ispreferred. The former will be the only one

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https://www.flickr.com/photos/internetarchivebookimages/14582489460/

Author Creighton, William Henry Paul, 1859-
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Flickr tags
InfoField
  • bookid:steamengineother01crei
  • bookyear:1909
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Creighton__William_Henry_Paul__1859_
  • booksubject:Steam_engines
  • booksubject:Heat_engines
  • bookpublisher:New_York__J__Wiley___sons
  • bookpublisher:__etc___etc__
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:372
  • bookcollection:library_of_congress
  • bookcollection:americana
Flickr posted date
InfoField
28 July 2014



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