Factory and industrial management . 6. Great Webb-de Glehn Systems. Separated cylinders. Divided engines. 1881. Three-cylinder di-vided compoundlocomotive, Ex-periment. F. London &North - WesternRy., without siderods. 1886. ( Beginning.)Four - cylinderdivided compoundlocomotive, , without siderods. A. G. deGlehn. FrenchNord Ry. 1891. Dividedcompound locomo-tives, Nos. 2121-2122, built for siderods. Messrs. duBousquet & deGlehn, FrenchNord Ry. 1900. Adopted for Sax-on State Railwaysand since aban-doned. T901. Adopted for Ba-varian State Rail-
Factory and industrial management . 6. Great Webb-de Glehn Systems. Separated cylinders. Divided engines. 1881. Three-cylinder di-vided compoundlocomotive, Ex-periment. F. London &North - WesternRy., without siderods. 1886. ( Beginning.)Four - cylinderdivided compoundlocomotive, , without siderods. A. G. deGlehn. FrenchNord Ry. 1891. Dividedcompound locomo-tives, Nos. 2121-2122, built for siderods. Messrs. duBousquet & deGlehn, FrenchNord Ry. 1900. Adopted for Sax-on State Railwaysand since aban-doned. T901. Adopted for Ba-varian State Rail-ways and sinceabandoned. — 1906. Great NorthernVulcan London & SouthWest. Non-com-pounds. 1907. Great West. Ry. 1908. -|- Non-compounds. —Fig. 27. Examples marked thus -j- have only one set of valve mechanisms and a rocker transmis-sion for the f-econd set of valves similar in arrangement to that introduced by Mr. Webbfor his fcur-cylinder balanced engines. 366 THE ENGINEERING FIG. I. BROTAN WATER-TUBE FIREBOX. Since 1902 the most notable change has been the general adoptionof the simple four-cylinder arrangement now common in CentralEurope and in America—as indicated in the first column. The mixedsystem indicated in the second column has been revived upon the EUROPEAN LOCOMOTIVE WORK. 367 French Paris-Lyons Railways and adopted for certain types on theBelgian State Railways. The du Bousquet arrangement of the deGlehn compound is adhered to at present by the larger number ofFrench railways, Swiss Railways, and a certain number of de Glehnlocomotives continue work in Prussia and Belgium. As shown in thethird column a compromise of the Webb and de Glehn arrangementsfor single-expansion four-cylinder locomotives is being adopted by atleast two English railways. The three different cylinder arrangements now being followed aretherefore derived from models long existing—that is, the Sandiford,the Henry and the Webb. The chief improveme
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