94 Book of Locomotives 



have been built at Horwich, and resemble 

 the output of those works in many details, 

 such as boiler, etc., Sir Henry Fowler is 

 really responsible for them. The new 

 engines have two cylinders, fixed at an 

 angle, with dimensions 21x26 inches, 

 driving wheels 5! feet in diameter. The 

 valve gear seems unduly complicated, and 

 is an adaption of the popular Walschaerts 

 motion. 



The boiler is of the telescopic, two 

 plate type, carrying a working pressure 

 of 1 80 Ib. A superheater is fitted, and a 

 capacious Belpaire fire-box, 9 feet in length, 

 is a prominent feature, the grate area being 

 27! square feet. The total heating surface, 

 including that of the superheater, is 1,828 

 square feet. The engine weighs 66 tons, of 

 which all but n are available for adhesion. 

 The tender is of the Midland type, of the 

 self -trimming variety, and it carries 5 tons 

 of coal and 3,500 gallons of water. Its 

 weight loaded is just over 42 tons. At 85 

 per cent of the boiler pressure, the tractive 

 effort is 25,800 Ibs. 



