Description: Patent for an improved dredging apparatus "and it consists in combining with the well known bucket chain form of excavator a suction pipe provided with a hopper and a crushing or breaking device so that the material being deposited in the hopper by the continuously moving buckets will be carried under the action of gravity to the breaking or crushing device and thence through a suction pipe and pump and delivery pipe to the place of deposit" (lines 9-18).
Date: February 14, 1893
Creator: Douglas, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department