. American engineer and railroad journal . B. 4 in. 387—254 in. 273—254 in. 21 ft. 15 ft. 6 in. 4,768 sq. ft. 2,478 sq. ft. 236 sq. ft. 215 sq. ft. 5,004 sq. ft. 2,693 sq. ft. 544 sq. ft. 273 sq. ft. sq. ft. 433 sq. ft. 1,617 sq. ft. 6 ft. 8 in. sq. ft. sq. ft. 4S2 AMERICAN ENGINEER AND RAILROAD JOURNAL. torn of the smoke arch. The shells of the drums are thus al-lowed to come in contact with hot gases, but the gases aroundthese surfaces have little or no velocity. The passage of gases through the tubes of the superheater-drums so breaks up the cinders carried by the gases that
. American engineer and railroad journal . B. 4 in. 387—254 in. 273—254 in. 21 ft. 15 ft. 6 in. 4,768 sq. ft. 2,478 sq. ft. 236 sq. ft. 215 sq. ft. 5,004 sq. ft. 2,693 sq. ft. 544 sq. ft. 273 sq. ft. sq. ft. 433 sq. ft. 1,617 sq. ft. 6 ft. 8 in. sq. ft. sq. ft. 4S2 AMERICAN ENGINEER AND RAILROAD JOURNAL. torn of the smoke arch. The shells of the drums are thus al-lowed to come in contact with hot gases, but the gases aroundthese surfaces have little or no velocity. The passage of gases through the tubes of the superheater-drums so breaks up the cinders carried by the gases that theusual form of front end netting is unnecessary. The arrange-ment incident to the application nf this type of superheater isa radical departure in the drafting of American locomotives, asit does away with the diaphragm and netting, the draft beingvery direct and also pulling on the fire much more evenly, thusobtaining more complete combustion and more efficient evapo-ration. Steam is conducted from the dry pipe to the forward drum,. JACOBS SUPERHEATER FDR SIMPLE LOCOMOTIVE. where it is circulated around the tubes. When the superheateris applied to a simple engine, the steam is conducted from theforward to the rear drum, where it is again circulated aroundthe hot tubes, and it is then carried to the steam chests. Baffleplates of thin sheet iron direct the circulation of steam in bothdrums. When applied to a compound engine, steam is conducted fromthe forward drum to the high pressure cylinders. Exhaust fromthe high pressure cylinders is directed to the rear drum wherethe steam is again superheated before being passed on to thelow pressure cylinders. The accompanying line engraving illus-trates the superheater and its connections applied to the bal-anced compound locomotives of the Atlantic type describedabove. It is reported that the first Jacobs superheater placed in ser-vice has been in continuous operation for 13 months with ab-solutely no repairs to the superheater. O
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
