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Stephenson Valve Gear for STEAM Engines and Locomotives - 1925 - reprint For Sale
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Stephenson Valve Gear for STEAM Engines and Locomotives - 1925 - reprint:
$11.98
Stephenson Valve Gear, ICS # 1665 A, originally published International Correspondence Schools, Scranton, Pennsylvania, 1925. Reprinted by Nation Builder Books, Mebane, NC, 2015. 5½ x 8½ photocopied booklet, 62 pages.Please note this is a new photoduplicated reproduction, not an original. The accompanying pictures were scanned from a reprint, not the original. As is usual with most correspondence course booklets by the International Correspondence Schools, this is richly illustrated with crisp line drawings. Contents include: - Definition of Valve Gear
- Principle on Which Gear Operates
- Arrangement of Simple Gear
- Position of Cranks
- Operation
- Addition of Stem Lap
- Reversing Arrangement
- Views of Valve Gear
- Arrangement of Parts
- Use of Transmission Bar
- General Operation
- Positions of Reverse Lever
- Movement Imparted by Reverse Lever
- Movement Imparted by Eccentrics
- Details of the Parts
- Action of Eccentric
- Eccentric Strap
- The Link
- Link Saddle
- Link Block
- Reverse Shaft
- Link Hanger
- Rocker and Rocker Box
- Oiling Points in Valve Gear
- Indirect and Direct Motion
- Valve-Rod and Valve-Stem Connection
- Position of Eccentrics
- Indirect Motion and Outside Admission
- Direct Motion and Outside Admission
- Indirect Motion and Inside Admission
- Direct Motion and Inside Admission
- Increase in Lead
- Crossed and Open Rods
- Valve Movement in Mid-Gear
- Reversing
- Effect on Valves
- Movement on Valves When Reversing
- Link Arc and Link Radius
- Breakdowns
- Slipped Eccentric
- Setting a Slipped Eccentric
- Broken Forward-Motion Eccentric, Strap, or Rod
- Broken Back-Motion Eccentric, Strap, or Rod
- Broken Link Hanger, Saddle Pin, or Lifting Arm
- Broken Link-Block Pin, or Lower Rocker Arm
- Broken Transmission Bar
- Broken Top Rocker Arm or Valve Rod
- Failure of Reverse Lever
- Reason for Variation in Cut-Off
- Single Shifting Eccentric
- Shifting Eccentric and Valve Gear Compared
- Change in Cut-Off
- Cut-Off Not Affected by Decreased Throw
- Angularity of Main Rod
- Difference Between Position of Piston on Forward and Backward Strokes
- Offset of Link-Saddle Pin
- Examination Questions
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