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Chain feed
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
Feeding mechanism by which the up-and-down movements of the drill stem are controlled by a link chain running on sprocket gears.
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Controlled, английский
- Управляемый; регулируемый
- Управляемый
- Подконтрольный (о предприятиях)
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Yellow dog, английский
Field name for a drill tripod or derrick lamp, consisting of a metal container with two spouts holding cotton wicks, on which the burning oil gives a very yellow light.
Feed gear, английский
Feed gears. the gearing or assemblage of three to four pairs of matched gears in a gear-feed swivel head of a diamond drill by means of which the drill string coupled to the feed screw is made to advance and penetrate the formation.
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