World Library  
Flag as Inappropriate
Email this Article

Bagnall-Price valve gear

Article Id: WHEBN0007987812
Reproduction Date:

Title: Bagnall-Price valve gear  
Author: World Heritage Encyclopedia
Language: English
Subject: Valve gear, Carrying wheel, Equalising beam, Kuhn slide, Articulated bogie
Collection: Bagnall Locomotives, Locomotive Valve Gear
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Bagnall-Price valve gear

Bagnall-Price valve gear is a type of steam engine valve gear developed at locomotive manufacturer W.G. Bagnall as an alternative to the more common Walschaerts valve gear. The gear was patented in 1903 by W.G. Bagnall and T. S. Price, the manager of the works.[1]

Layout

Schematic diagram showing the major components of the Bagnall-Price valve gear
Bagnall-Price valve gear on an 18 in gauge Bagnall product at the Kimberley diamond mine museum, South Africa

The valves are driven from an eccentric cam mounted on one of the driving axles and linkage from the crosshead. The driving axle cam drives a rocking shaft that is mounted inside a cylindrical sleeve (known as the rocking shaft bush) above the cylinder. A drop lever and connecting link from the crosshead oscillates the sleeve to control the lap and lead of the cylinder.[2]

Comparison to Walschaerts

W.G. Bagnall claimed that Bagnall-Price valve gear eliminated some of the complexity of Walschaerts gear, specifically the combination lever and return gear; this in turn meant the externally mounted gear had greater ground clearance which was an advantage in industrial locations where lineside obstructions could damage the gear of passing locomotives.[3]

References

  1. ^ "Bangall locomotive valve gears". Retrieved 27 January 2015. 
  2. ^ Baker, Allan C. (1966). "Bagnall Locomotive Valve Gear". The Industrial Railway Record 11: 264–270. 
  3. ^ "Side Tank Locomotive 3050". Retrieved 27 January 2015. 
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.