panying engraving illustrates a simple arrangement of machinery which has been adopted by the Lords ofthe Admiralty for use in Her Majestys Dockyard, at Chatham,England. Its use is for making excavations under water inthe construction of sea walls or harbor works, and for re-moving accumulations… … In our engraving, A is acasing containing a revolving disk,which is faced with steel, and has a steel screw, B, affixed tothe end of the revolving shaft. This screw loosens, stirs up,and agitates the materials, as shown by the bank of mud orearth, C. A vertical discharge pipe, E, up which the…
Patents · Machine · Water · Iron · Railroad · Sewing machine · Manufacture · Square feet · Patent office · Scientific American · Address munn · East river · Steam engine · Dated june · Letters patent · Full particulars
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