. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 737. COAL-WASHINGJIG. Coal and slate arewashed through a vibratingbox or jig, and separatedby their difference in grav-ity. The coal is carriedover in a short chute tothe coal elevator and theslate is discharged throughan adjustable trap to theslate hopper below, from
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 737. COAL-WASHINGJIG. Coal and slate arewashed through a vibratingbox or jig, and separatedby their difference in grav-ity. The coal is carriedover in a short chute tothe coal elevator and theslate is discharged throughan adjustable trap to theslate hopper below, fromwhich it is carried away byan elevator belt. A small vertical engineoperates the jig. 284 MINING DEVICES AND 738. PROPELLER PUMP AGITATOR. A series of propellers on a shaft revolving ina tube draws the solid and fluid material inat the bottom and discharges it in a showerat the top. For agitating oils and ores, as inthe cyanide process for gold separating. In other designs a single propeller isplaced at the bottom with the shaft in astep and driven by belt and pulley on theshaft above the tank. 739. COAL-HANDLING PLANT.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
