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July, 1918 THE MARINE REVIEW : 117 , Foundation Co. - Class O-C-E Air Compressor Chicago Pneumatic Simplate Valve Air Compressors Direct Motor Driven, also Steam and Belt Driven represent the most advanced design in duplex, high speed, inclosed frame, self- oiling machines of their type. Smoothness and_Noiselessness of operation are two of their prin- cipal features. Their volumetric and mechanical efficiencies are the maximum. All Chicago Pneumatic Air Compressors are equipped with Sim- plate valves which have made high speeds safely practicable, and which are practically indestructible. Send for Bulletin 34-M. Chicago Pneumatic Tool Co. 1097 Fisher Bldg. 52 Vanderbilt Ave. CHICAGO NEW YORK Branches Everywhere / IN USE BY Cramp Ship Yards New York Shipbuilding Fore River Shipbuilding Newport Ship Yards American Shipbuilding Co. File, Set and Joint All Band Saws in One Operation Over 6,000 in Use. 8 Models of Filers at Prices from $50.00 to $130.00. The only machines made that do it. Over 200 shipped U. S. Govt. in France. The Wardwell Mfg. Co. Specialty Manufacturers Combination Filing and Setting Machines. Circular Saw Filers and Grinders. Band Saw Grinders, Stretchers, etc. 114 Hamilton Ave. Cleveland, Ohio Standard Shipbuilding Co. Merchant Shipbuilding Co. York River Shipbuilding Bethlehem Shipbuilding Corp. Bath Iron Works U.S. Navy Yards U. S. Naval Academy Arundel Shipbuilding Co. Jahncke Shipbuilding Co. Lone Star Shipbuilding Co. N. Y. Yacht & Engine Co. Pacific Am. Fisheries The Thatcher “MASCOT” Model 27 The ‘‘MASCOT”’ Ship Range has been installed on four out of five of the Government’s Submarine Chasers. It is of sturdy construction, burns either coal or wood, and is unexcelled for cooking and baking. The No. 27, illustrated, has water back which supplies forty gallons of hot water per hour. Made in suitable sizes for all boats. Send for ‘‘Mascot’’ Booklet THATCHER FURNACE Co. SINCE 1850 Makers of GOOD House Heaters and Kitchen Ranges NEW YORK CHICAGO 134-140 : 131-135 West Lake Street West 35th Street SHIP BOILER We are 90 S. Severa years old this year nce Mig. Co. Glassport, Pa. (Suburb of Pittsburgh) Please mention THE Marine Review when writing to Advertisers