Page:Model Steam Locomotives by Greenly Henry.pdf/32

Locomotive Types type provides. In the former class the extra coupled wheel is placed between the bogie and the driving wheel, and to reduce the rigid wheel base the trailing coupling rod may be shortened if small wheels are used. In the inside cylinder class the front end is unchanged, three pairs of coupled axles being used instead of two. In both classes gi shallow grate is an essential feature, particularly in the case of express engines with large driving wheels. The

Fig. 30.-—Model of the 0—4—2 L.B.S.C.R. Locomotive “ Gladstone **

Fig, 31.—Model of a Standard British 0—6—0 Goods Locomotive. 23