A device to control the load and prevent spillage on a gathering conveyor
receiving coal or mineral from several loading points or subsidiary
conveyors. The device is a simplified weightometer and is installed on the
main belt a short distance before the intermediate loading point. When the
main belt is fully loaded, the scale registers this fact and causes a
break in the electrical circuit of the intermediate conveyor, which is
stopped. Immediately after that, the flood loading on the main conveyor is
finished, and the load controller operates and starts up the subsidiary
conveyor. Nelson
See:car runner; car dropper.
A graded filter placed at the foot of an earth dam or other construction,
stabilizing the foot of the structure by virtue of its weight and
permeability. Hammond
A drilled borehole in which explosive materials are loaded without priming
the hole or including an initiator.
A grinding wheel that has a glazed or clogged surface from particles of
the material being ground. Crispin
a. A mechanical shovel or other machine for loading coal, ore, mineral, or
rock. Syn:mechanical loader
scraper loader; shaker-shovel loader; shovel loader; cutter loader;
gathering arm loader. Nelson
b. The worker who loads coal, either by hand or by operating a loading
machine, at the working face after the coal has been shot down; also keeps
the working place in order. Syn:loader operator
See also:hand loader
c. In anthracite and bituminous coal mining, a laborer who shovels coal or
rock, blasted from the working face in a mine, into cars or onto a
conveyor belt from which cars are loaded at some point removed from the
working place. May be designated as car loader; conveyor loader. Also
called coal loader.
d. In metal and nonmetal mining, one who shovels ore or rock, caved or
blasted from the working face in a mine, into cars or onto a conveyor belt
from which cars are loaded at some point removed from the working place.
DOT
e. See also:gun-perforator loader; tractor shovel.
Syn:loader engineer; loader runner; loader operator..
a. In bituminous coal mining, a foreperson who supervises a crew of
loaders loading coal onto a conveyor or into cars at working places in a
mine. Also called loading boss; loading-unit boss. DOT
b. In anthracite coal mining, a foreperson who supervises the loading of
railroad cars with prepared coal. DOT
See:loader; boxcar loader.
A gate road equipped with a gate conveyor or a gate-end loader; the gate
to which the face conveyors deliver their coal. Nelson
Eng. A man who regulates the sending out of the full cars from a longwall
stall, or gate. Fay
See:loader
See:boxcar loader; loader.
A line plotted from the results of a tensile test on metal, the loads
being shown as ordinates and the elongations of the gage length as
abscissae, thus relating the extension of the material under test to the
applied load. See also:stress-strain curve
a. The ratio of the average compressor load during a certain period of
time to the maximum rated load of the compressor. Lewis
b. The ratio of the collapse load to the working load on a structure or
section. Taylor
c. In electric power engineering, the ratio of average electrical load to
peak electrical load, usually calculated over a 1-h period. Lyman
d. Average load carried by an engine, machine, or plant, expressed as a
percentage of its maximum capacity. Nichols, 1
e. Ratio of average output during a period to maximum output during the
period. Sometimes the ratio of output to maximum capacity.
Strock, 2
A plication of an underlying stratum, believed to result from unequal
pressure and settling of overlying material. AGI
A measuring device used to indicate the load or weight suspended on a
drill hoisting line or cable. Long
In ion exchange, sorption onto resins of metallic ions from a pregnant
solution in loading cycle. Pryor, 3
a. In coal preparation, an overhanging steel chute for loading coal into
rail wagons or lorries; usually capable of vertical movement as loading
proceeds to minimize breakage. Nelson
b. An adjustable conveyor used for lowering coal into cars with little
breakage. Widely used for handling domestic sizes of bituminous coal.
Mitchell
c. A hinged portion of a conveyor that is designed to receive materials at
a fixed level and to discharge them at varying levels; usually employed
for loading coal into wagons. BS, 5
See:conveyor man
See:loader boss
a. A three-sided tray for loading or for transfer of material from one
transport unit to another. See also:chute
b. A gravity chute used to convey coal from the pocket or the screen to
the railroad car. Mitchell
c. Used to direct material onto a conveyor.