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HYDRAULICS AND ITS APPLICATIONS 



ART. 207. HYDRAULIC CAPSTANS, 



Fig. 392, A, B, and c, shows a type of hydraulic capstan driven by a 

 three-cylinder Brotherhood engine. 1 The supply and discharge pipes are 

 led to the engine through trunnions T T, about which, on releasing the 

 catch C, the whole machine, capstan and engine, may be rotated, thus 

 bringing the engine upwards for inspection or repairs without breaking any 



FIG. 392 A. 



joints. The water supply is regulated by means of the treadle K which 

 operates the admission valve. With a capstan head 1 foot 6 inches in 

 diameter the hauling speed of such a machine is about 180 feet per minute. 

 Where the capstan is intended for very heavy work the engine may be 

 connected to the capstan head by speed-reducing gear wheels, and Fig. 393 

 shows such a machine designed for two speeds exerting a pull of 7 tons 



1 By courtesy of the Hydraulic Engineering Co., Ltd., Chester. 



