- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
A device placed in the rail track to arrest a forward runaway tram. The front axle of a descending tram traveling at normal speed depresses the catch and allows it to drop back in time for the back axle to pass over. Should the tram be traveling at excessive speed, the tail end of the catch arrests the rear axle.
Industry:Mining
A device sensitive to humidity changes and arranged to actuate other equipments when a predetermined humidity is attained.
Industry:Mining
A device sensitive to humidity changes and arranged to actuate other equipments when a predetermined humidity is attained.
Industry:Mining
A device similar to a casing elevator, used to raise and lower outside-coupled pipe in a borehole.
Industry:Mining
A device similar to a guide frame for shaker conveyors, but with provision for insertion of the puller rod. A connecting frame can be inserted between any two standard trough sections to serve as a substitute for a connecting trough on single-arm electric or air devices.
Industry:Mining
A device similar to a water swivel but designed to conduct air under compression into a rotating drill stem when air instead of a liquid is used as an agent to flush drill cuttings out of a borehole. Compare: water swivel.
Industry:Mining
A device that automatically couples cars when they bump together.
Industry:Mining
A device that brings water sprays into action when heating occurs on roadway belt conveyors. The local heat fuses an element holding taut wires. On release by fusion, the wires allow spray valves to open and the water cools the affected area.
Industry:Mining
A device that can be set to cause an emergency brake application when a cage or skip travels beyond a predetermined point into a danger zone.
Industry:Mining
A device that can be set to prevent the operation of a mine hoist at speeds greater than predetermined values and usually causes an emergency brake application when the predetermined speed is exceeded.
Industry:Mining
