Maritime History of the Great Lakes

Marine Review (Cleveland, OH), 2 Apr 1908, p. 50

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"st." GENERATOR DIRECT-CONNECTED TO AMERICAN BLOWER ENGINE. line the Forbes engine is exclusively used, being a high-speed, automatic, double- acting engine of plug-valve type, with sight-feed lubrication, uniform speed be- ing assured by use of the Rites governor. The main office and works of the C. & C. Electric Co. are at Garwood, N. J., the New York office being at 149 Broad- way. BUCKET OPERATING DREDGE. The dredges shown in the accom- panying illustrations are two of the many wiypes. ot dredges in use. wherever extensive harbor construction .or riyer improve- ment operations. are being carried out. The double dredge has been de- signed and built for .canal. construc- tion, and is equipped with two buckets, two booms and two .vacuum. pumps. The capacity of this machine is from 8,000 to 10,000 cubic yards per day 'of 10 hours, depending upon the mate- rial and depth of cutting, the buckets and booms having independent hoist- ing and swinging engines enabling bucket-operating | other gwaste place, at any point up to 3,000 ft. Machines of this description, and smaller capacity, are' used for re. claiming' swamp lands, river dredging, etc., one machine, owned by the Nor. folk Dredging Co. having recently been engaged in deepening channels, digging canals, filling in beh'nd bulk. heads and general dredging purposes, in addition to filling cars. The dredge shown in our other jj. lustration is owned by Messrs. John and Joseph McSpir't, of Jersey City, and has beeh' used principally in re- moving blasted rock from under water, At New - Brunswick, N, J, rocks weighing between 'six and seven tons were handled by this machine without injury to the bucket. It op- erates a 1% cubic yard orange peel bucket, and during the excavations at New Brunswick varied in capacity from 300 to 500 cubic yards per day OD 10 "hours. REMOVING BLASTED ROCK FROM UNDER WATER. them to be used together or separate- ly, as may be desired. The dredged material is discharged into hoppers lo- cated in dnd on both "sides of the scow, from whence it is taken up by the vacuum pumps and discharged through pipes to the spoil tank or ' ' DOUBLE DREDGE UN CANAL CONSTRUCTION. The uses to which the bucket-oper- ating dredge can be put are innum- erable. In the west, where the rise and fall of the rivers and sloping banks make conditions differ greatly from the east, these dredges have been found: the most practical devices for handling coal, the 'coal being trans- ferred by the machine to a hopper, which in turn loads cars that carry the coal to the storage. For western and southern river dredging it has been found necessary, in many cases, to design special shallow draught dredges, as a deep draught dredge would be practically useless. For handling sand or gravel, coal or rocks, the bucket-operating dredge has no equal. The Hayward Co. New York, have equipped the dredges illustrated, being manufacturers of dredging and excavating machinery. Their well- known orange-peel and clam she!l buckets are especially adapted for ae Binge and dredging operations.

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