Several types of tailgate spreaders are in use today.trucks. Hoppers have various widths and capacities.The simplest is the vane spreader (fig. 16-29).They usually contain augers to distribute the aggregateThere are tailgate spreaders that consist of a hopperthe full width of the box. They have controls to regulatefeed gates, feed roll, augers, and the truck hitch. Allwith a feed roller, activated by small wheels driven bytailgate and mechanical spreaders that are pushed by acontact with the truck wheels (fig. 16-30).truck have the disadvantage that the truck must beMechanical spreaders are hoppers on wheels thatoperated in reverse with consequent loss of steeringare hooked onto and are propelled by backing aggregatecontrol and reduction in speed.Figure 16-29.—Vane spreader.Figure 16-30.-Hopper type of tailgate spreader.16-26
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