PRINCIPLES OF CONSTRUCTION. 



103 



than the first in oider to keep the cable taut. Power from the 

 tame machine is transmitted by endless messengers to other dra w- 

 oflF gears placed in convenient positions at the side of the tank, 

 and over it to lift the cable and deliver it therein. At the rate 



the cable comes in from the machines (four or five fathoms 

 per minute) one man in the tank can attend to the coiling, 

 and whitewash the cable at the same time to prevent the turns 

 sticking. Fig. 49 gives a general idea of the arrangement of 



