. The street railway review . THE DKOMED.^RY2—Loaded 1—Ready 3—Dumping. thoroughly. In the operation of mixing the charge is not pitchedabout but the materials are simply carried up a little way by theclimbing side of the cylinder to curl over and slide down in thinsheets toward the front, with the effect that the stones appear tohave been rubbed into a perfectly mixed mortar. Each load isabout Yz cu. yd. On reaching the dumping place the driver movesa small lever that can be operated from either side and an un-latching bar thereby released dumps the mixer as shown in and 4. In the proc
. The street railway review . THE DKOMED.^RY2—Loaded 1—Ready 3—Dumping. thoroughly. In the operation of mixing the charge is not pitchedabout but the materials are simply carried up a little way by theclimbing side of the cylinder to curl over and slide down in thinsheets toward the front, with the effect that the stones appear tohave been rubbed into a perfectly mixed mortar. Each load isabout Yz cu. yd. On reaching the dumping place the driver movesa small lever that can be operated from either side and an un-latching bar thereby released dumps the mixer as shown in and 4. In the process of dumping, the drum is automaticallythrown out of gear at the very end of the movement so that themixer delivers the load and moves on out of the way withoutstopping. It should be noted that the dumping is not done throughthe trap door but that the cylinder splits open, the door remainingclosed as in Fig. 3. After dumping the drum is easily closed bya pull backwards on cleats or grab-handles conveniently locatedas
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
