Railroading Glossary
The following glossary is arranged alphabetically with each term catalogued by first letter. Select a letter below to begin.
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Quarter-locked
Condition of a steam locomotive when it is stopped so that the drive rods are directly aligned with the piston, thereby preventing movement. The two sides of a steam locomotive are "quartered" (one-quarter rotation out of phase with each other) to prevent quarter-locking from occurring.
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