The Mechanical Handling and Storing of Material

CONVEYORS B.~APPLIANCES WITH A STATIONARY TROUGH IN WHICH THE MATERIAL IS CONVEYED BY MEANS OF A RE- CIPROCATING PUSHING DEVICE CHAPTER'VI PUSH-TROUGH CONVEYORS The construction of these appliances is similar to the push-plate conveyor, the principal difference being that instead of an endless chain of push-plates revolving over the trough, a rod or frame is substituted, which carries hinged push-plates. This rod or frame has a 1.1 Fig. 91. Push-Trough Conveyor with Outlet, reciprocating movement, so that the plates act like push-plates in the forward movement, while they disengage, and, being hinged, slide over the top of the material at the back- ward stroke. Fig. 91 shows such a con- veyor of the most usual design. The trough is generally made similar to that of the push-plate, i.e., with two E irons, and a plate at the bottom riveted to the under flange of the two E irons. The reciprocating rod or frame is carried at intervals by pairs of rollers, which revolve on the upper flange of the E iron trough. The two usual methods of in Pigs. 92 and 93. The oscillation is given to the rod or frame with its hinged blades by a crank and connecting rod, as shown in Fig. 91, which represents the pipe construction. An outlet manipulated by a chain- wheel, rack, and pinion is also indicated upon the drawing. The dotted circles represent the electro-motor and countershaft. Figs. 92 and 93. Methods of Hinging the Push-Plates. hinging the spades or push-plates are shown