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96 THE Marine ReEvVIEw Dredge Deck Engine for Handling Dump Scows i Wire lines are used with this machine, instead of ; Manila, and we have the testimony of those using 'them, that they will SAVE THEIR COST IN ONE SEASON. Built in two sizes. (The cut shows small size. ) We also build STEAM SCOW WINDERS for rais- ing the hopper doors by power, WILL WIND UPA TENHOPPER SCOW IN TEN MINUTES. Write for circulars and particulars. SUPERIOR IRON WORKS, Superior, Wis. Armstrong Pipe Cutting and Threading The Machines are Portable-- ° ° Sizes up to 4" can be carried to the work. For American Construction | hand or power interchangeably--even the 6" size 3 a ely may be turned by an Company eS i apprentice unassisted. Die t Catalogues free. "i ' 7 THE ARMSTRONG DOCK ® HARBOR WORK Ne ae WRECKING 1527 Rockefeller Bldg. ON BCs Fb PILE DRIVING CLEVELAND : AY) 2 s , BRIDGES AND OHIO ies Fei osbore conus CONCRETE CONSTRUCTION Canal Street. The Marine Iron Company BAY CITY, MICH., U. S. A. BUILDERS OF MACHINERY FOR ALL PURPOSES. Dredging Machinery, Centrifugal Pumps Hoisting Engines, Marine Engines. Boom and Crane Castings, Propeller Wheels, etc. We shall be pleased to quote prices upon application. Sent on Trial portable deve pem || Ortable Power Drills DESIGNED FOR BY ; 7 sizes, %", 6", 4", %", Kr, 1K" R EVERY SERVICE 2" ities. Chuck close coy ner drilling. Speed can be STOW FLEXIBLE SHAFT CO. Haale) for Teele ee saste Dati PHILADELPHIA, PA. Screw-feed and "Old Man" for jarger sizes, Practical Marine Engineering By PROF. W. F. DURANT For Marine Engineers and Students, with aids for applicants Also full line of Tool-post Grinders up to 2 H.P. for marine engineers' license. Direct or Alternating current. PRICE $6.00 THE HISEY-WOLF MACHINE CO., - - Cincinnati, 0. FOR SALE BY THE MARINE REVIE W, Cleveland