File:American engineer and railroad journal (1893) (14757089134).jpg

Identifier: americanengineer68newy (find matches)
Title: American engineer and railroad journal
Year: 1893 (1890s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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built by F. W.Wheeler & Co., of West Bay City. Mich , for a steel tugnamed in honor of her ownei, W. ff. WUmot, of New Orleans,La. The general dimensions of the vessel are as follows : Length over all 110 ft. 6 in. Length between perpendiculars 99 6 Beam, molded 23 0 Depth, molded 12 6 Draft of water 11 0 The propelling machinery consists of an inverted, direct-acting, surface-condensing, triple-expansion engine, with cyl-inders 16 in., 24 in., and 40 in. diameter, and a stroke of 38 in..driving a right-handed screw propeller 9 ft. 6 in. in diameter,with a mean pitch of 12 ft. 6 in. The cylinders are placedwith the high pressure in the middle, the intermediate for-ward, and the low pressure aft, this being the sequence ofcylinders generally adopted by the majority of engine-builderson the lakes. Each cylinder is fitted with relief valves, top and bottom,and the low-pressure cylinder is provided with a 24-in. start-ing valve. All steam-ports and passages are calculated for a D ■
Text Appearing After Image:
Vol. LXVIII, No. 7.) AND RAILROAD JOURNAL. 317 piston speed of 60O ft. per minute, with a flow of steam of9,000 ft. per minute for steam passages and 6,000 ft. per min-ute for exhaust. The ports in the high-pressure cylinder are1; in. deep and 13 in. wide. The intermediate-pressure cylin-der has two H in. X 19 in. ports, and the low pressure cylin-der has two 1; in. X 36 in. wide ports. The main steam-pipeis of copper 5 in. inside diameter, the intermediate receiverpipe is 8 in., and the low-pressure receiver-pipe is 10^ in. indiameter, the exhaust pipe leading to condenser being 12 in.in diameter. The throttle-valve is of the balanced type, andfitted with a suitable relief-valve, so as to work free and easy.The high-pressure cylinder is provided with valve chest linersof hard, close-grained cast ironwith diagonalbridges and ports14 iti. deep. Thepiston-valve is sol-id. 7* in. diameter,and fitted perfect-lv steam-tight inliners ; lap on topis 1; in. and i) in.on bottom ; no in-side la

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