GB190819139A - Improvements in or applicable to Steam-generators of the Locomotive Type. - Google Patents

Abstract

19,139. Trevethick, F. H. Sept. 11. [Cognate applications No. 20,454, A.D. 1908, dated Sept. 29, and No. 5664, A.D. 1909, dated March 9.] Locomotives.-Feed-water is heated or steam is superheated in tubular vessels containing smoketubes and so arranged in the smoke-box of a locomotive boiler that the smoke-tubes conduct the waste gases to the uptake g from the front of the smokebox. Vessels b<1>, Figs. 1 and 2, containing single smoke-tubes b and serving as feed-heaters may be arranged on one side of the smoke-box, and vessels c containing a number of small smoke-tubes c' and serving as superheaters may be arranged on the other side. The vessels are mounted in annular plates d, d<1>. The space between the rear plate d' and the boiler tube-plate is closed by a plate d<1> forming a chamber d<5>, which conducts the gases to the front of the smoke-box. The passage of the gases about and through the heaters is regulated by a damper d<3> on the annular plate d<1> and by adjustable conical plugs e at the rear ends of the smoke-tubes b. In modifications, one or more vessels f, Fig. 4, each divided into three or more compartments by plates h<1> and traversed by fire-tubes f<2> are arranged in the upper part of a smoke-box. The vessels may be used either as feed-heaters or as superheaters.