Holcroft Valve Gear

Holcroft Valve Gear

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Holcroft valve gear was a type of valve gear designed by Harold Holcroft and used on three-cylinder steam locomotives of the South Eastern and Chatham Railway. It bore many similarities to the Gresley conjugated valve gear used on the original LNER A1 design. It varied from the Gresley method of operation by using the combination lever assembly instead of the valve spindles to drive the middle cylinder of a three-cylinder design. This had operational advantages and resolved some of the problems associated with Gresley's design. When working for the GWR, Holcroft collaborated with Sir Nigel Gresley to invent and patent the Gresley conjugated valve gear for three-cylinder steam locomotives. The Gresley application of conjugated valve gear required further development to increase reliability and promote ease of maintenance.show more

Product details

  • Paperback | 76 pages
  • 152 x 229 x 5mm | 122g
  • Acu Publishing
  • United States
  • English
  • 6135743465
  • 9786135743463