. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . r isrequired for operation. Reciprocating Flight Conveyors Reciprocating flight conveyors consist of a frame usuallybuilt of steel, which is made to move back and forth, andunderneath which are hung hinged flights or pushers, which,when they move forward, push the material in troughs,and when they move back, lift up and ride over the mate-rial. The frame is equipped with rollers or wheels, spacedat comparatively long interval
. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . r isrequired for operation. Reciprocating Flight Conveyors Reciprocating flight conveyors consist of a frame usuallybuilt of steel, which is made to move back and forth, andunderneath which are hung hinged flights or pushers, which,when they move forward, push the material in troughs,and when they move back, lift up and ride over the mate-rial. The frame is equipped with rollers or wheels, spacedat comparatively long intervals, these wheels travelingon tracks on each side of the trough. These conveyorshave been used principally for handling sand, especiallymolding sand in foundries. Their suitability for this sort 430 CONVEYORS AND ELEVATORS FOR LOOSE MATERIAL of work is due principalh- to the few wearing parts, the mostly on a bed of the material itself, instead of slidingrollers and the hinges of the flights being about the only on the trough. The discharge of the material is accom-parts besides the driving machinery wliich receive much plished by gates in the bottoms of the Reciprocating Flight Conveyor—Forward Movement Reciprocating Flight Conveyor—Return Movement wear, since sufficient clearance can be left between the The reciprocating movement is imparted to these con- flights and the trough so that the material slides along veyors by eccentric rods, or cranks and connecting rods. Current Conveyors Under current conveyors might properly be classed pneu- and systems for pumping liquids. Hydraulic conveyorsmatic conveyors, steam jet conveyors, hydraulic conxeyors have been used to a limited , mainly for conveying ti ^^ -^ i^At^^^L-^H^BflA I i:. .^n l^^l L _ g| ? ll^w^ far -,^Vs- n P^.|
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjecthoistingmachinery
