Horse whim
A horse whim winds a rope around a drum as animals walk around a circular track. It supplied lifting power for mine shafts and other work before...
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Mining & Material Handling · 25 entries
A horse whim winds a rope around a drum as animals walk around a circular track. It supplied lifting power for mine shafts and other work before...
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A horse mill converts the circular walking motion of an animal into rotary power. Shafts and gears could drive grinding stones, threshing equipme...
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A winding engine raises and lowers cages or skips in a mine shaft. Rope drums, brakes and control gear regulate the movement of workers, equipmen...
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A headframe carries the sheaves that guide hoisting ropes above a mine shaft. Its structure supports the winding system and became a prominent fe...
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A minecart carries ore, coal or waste through underground workings on rails. Small wheels and a narrow body allowed heavy material to be moved th...
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The Davy lamp surrounds its flame with wire gauze that limits the transmission of flame to surrounding gas. It was developed for coal mines, alth...
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A mine ventilation fan drives air through underground workings to dilute contaminants and supply fresh air. Large fan installations became essent...
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A powered rock drill repeatedly strikes or rotates a cutting tool against stone. Compressed-air and other power systems accelerated drilling for...
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A jackhammer drives a chisel with rapid repeated impacts. Pneumatic and later electric or hydraulic versions made it possible to break rock and p...
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A coal breaker crushes and sorts coal into useful sizes while separating unwanted material. Its machinery and picking arrangements were part of t...
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A rock crusher reduces large pieces of stone or ore by compression, impact or other mechanical action. Jaw and gyratory designs form important st...
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A stamp mill repeatedly lifts and drops heavy stamps to crush ore. Water or engine power drives the camshaft, allowing material to be broken down...
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A ball mill rotates a drum containing grinding balls and material to be processed. Impacts and abrasion reduce particle size for mineral processi...
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A mineral jig separates particles in a pulsating water flow according to their movement and density. Repeated lifting and settling concentrate he...
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A flotation cell mixes finely ground ore with water, air and reagents. Selected mineral particles attach to bubbles and rise into a froth that ca...
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A bucket elevator carries bulk material upward in buckets attached to a moving belt or chain. At the top, the buckets discharge into a chute befo...
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A belt conveyor carries material on a continuous moving belt supported by rollers or a sliding surface. Drives, tensioning devices and transfer p...
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A screw conveyor moves loose material along a trough or tube with a rotating helical flight. The mechanism can meter powders or grain as well as...
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A drag-chain conveyor pulls material along an enclosed trough with chains and attached flights. It is suited to moving bulk solids where containm...
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An aerial tramway carries suspended cabins or loads on ropes between supports. Station machinery provides traction and tension, allowing transpor...
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A ropeway conveyor moves a succession of suspended material carriers along an overhead cable route. It has been used to carry minerals and other...
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A forklift raises and carries loads on projecting forks fitted to a lifting mast. Hydraulic lifting and a counterbalanced chassis made it a centr...
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A pallet jack lifts a pallet a short distance so it can be moved on small wheels. Manual versions use a hydraulic pump in the handle assembly, pr...
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A gantry crane supports its lifting bridge on legs that span the working area. Wheels or rails allow the structure to move while the hoist travel...
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A container crane transfers standardized shipping containers between a vessel and the quay. A long waterside boom and travelling spreader coordin...
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