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VOL. 36. ~ CLEVELAND, NOVEMBER 7, 1907. NEW YORK No. 19 PUMP DREDGE FOR SAVANNAH RIVER. Bids were recently opened by Maj. J. C. Sanford, government engineer, Philadelphia, for the construction of a steel hull 16 in. pump dredge for Savannah river. The contract was Boiler Boiler 624 58 00 64 52 50 48 46 SECTION A=B 44 42° 40 38 The propelling machinery will con- sist of one reversible double-cylinder engine, with cylinders 12 in. diameter by 16-in. stroke, and will be installed in the stern of the dredge. The pro- peller will be 4 ft. in diameter, and of 3 or 4 it pitch, The pumping en- PLAN VIEW -- S 86 84 92 80 28 26 24 22 .20 18 16 LONGITUDINAL SECTION * 'of cooling surface. culating water. of solid drawn brass and 5% in. in diameter. They will have 900 sq. ft. A. direct-driven centrifugal=pump will supply the c:r- There will be one twin-cylinder, double-acting air pump, with steam cylinders 10 in. diameter, LONGITUDINAL SECTION AND PLAN VIEW OF DREDGE FOR SAVANNAH HARBOR, awarded to the Ellicott Machine Co., Baltimore, Md., upon its bid of $117,700. The géneral dimensions of the dredge will be: Length over all, 126 ft.; molded' beam, 36 ft.; molded depth, 8 ft. will have two longitudinal and five transverse bulkheads. The transverse bulkhead will be in line with and form the after end of the well, The hull will be of steel, and. forward © gine will be a vertical, direct-acting, compound engine, with cylinders 14% and 32 in. diameter by 16-in. stroke, to run at a normal speed, of from 190 to 200 revolutions per minute. The crank pits of the pumping engine will be enclosed, forming receptacles for oil, A piston valve will be fitted to the high-pressure cylinder, and a double- ported slide valve to the low pressure. The condenser shell will be of steel with cast iron heads, the tubes to be and water cylinders 16 in. diameter by 12-in. stroke. , The feed pump will be duplex, with cylinders 4 and 8 in. diameter, by 8-in. stroke. The fire pump will have cylinders of 8 and_12 in. diameter by 12-in. stroke. The water service pump will be similar in design to the others, with cylinders 4 and 6 in. diameter by @jn. stroke. The boiler installation will consist of two locomotive type boilers, each to have about 1,000 sq. ft. of heating