hopper. to receive the earth, whatever be the angle at which the two engines revolve in opposite directions, it is only neces- Loading the Cars.—When a pivoting excavator is em- sary to throw the turning mechanism into gear with one or work is being done, and to carry it to the rear where the… … axle is supported by a cast iron piece mounted on a Fig. 4.—DETAILS OF UPPER TUMBLER AND BUCKET second step and connected CHAIN. with the bucket frame. It always remains parallel with the panying engravings our read- be emptied to the rear, it is very difficult to dispose of the bucket chain wheel,…
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