. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . d. When they are outside and it isdesired to house them in, either a wooden structure is usedor one with a wood or steel framework covered with cor- rugated iron. The footwalk for access to the conveyor issometimes built inside the housing and sometimes outsidethe housing, and doors provided for convenient access tothe conveyor. Reciprocating Conveyors Conveyors of this class include two types: reciprocatingtrough conveyors,
. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . d. When they are outside and it isdesired to house them in, either a wooden structure is usedor one with a wood or steel framework covered with cor- rugated iron. The footwalk for access to the conveyor issometimes built inside the housing and sometimes outsidethe housing, and doors provided for convenient access tothe conveyor. Reciprocating Conveyors Conveyors of this class include two types: reciprocatingtrough conveyors, sometimes called grasshopper con-veyors, and reciprocating flight conveyors. Reciprocating Trough Conveyors This type of conveyor takes its name of grasshopperconveyor from the hopping or jumping movement im-parted to the material being conveyed by the movement ofthe conveying trough up and forward. The conveyor con-sists principally of a trough, usually of steel and of theproper depth and width for the capacity required and thematerial to be handled. In one type the trough is supported on flexible arms atclose intervals, these arms being inclined to a certain ex-. Reciprocating Trough Conveyor. tent so that the trough moves up as well as forward when avibrating motion is imparted to it by an eccentric andan eccentric rod. The throw is small and the speed fairlyhigh. The eccentric rod is fitted with springs where it isconnected to the trough to absorb the shock. The drivingshaft is equipped with fly wheels which makes the opera-tion more uniform. In another type the trough is supportedby or suspended from laminated spring legs. In either type the material may be screened in transitand delivery may be made at the end of the run or atany point through gates in the bottom of the trough. Theseconveyors may be used for handling sand, cement or mostany loose material. They are particularly adapted forhandling materials which are more or less sticky, especiallyraw sugar. In fact it is
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjecthoistingmachinery
