| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Head shaft | Mining | The shaft mounted at the delivery end of a chain conveyor, on which is mounted a sprocket that drives the drag chain. The shaft, in turn, is driven by means of a drive chain from the speed reducer of the power unit through a sprocket mounted on the shaft end. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
