to set the tableis one of 2^ inches in b% feet, with a running speedof 350 revolutions per minute. It will be seen thatthe machine combines the riffle boards of the ground-sluice and the side-shaking of Frue vanner concentra-tor. It is claimed that at the most not more thanone-tenth of a horse… … TYPICAL GOLD-SAVING MACHINE FOB BEACH MINING AT CAFE NOME. At the top of the frame is a hopper into which thesand and gravel are shoveled, and from the hopper aworm feeds the material, at a constant rate, to theupper end of a shaking frame, where water washes itdown. The shaking frame consists of…
Apparatus · Steel · Patents · Armor · Open hearth · Feet · Years ago · San juan · Scientific American · Bethlehem steel · East river · Proposed form · Cape nome · Armor plate · Paris exposition
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