254 



SUBMARINE CABLE LAYING AND REPAIRING. 



and 22 on the latter shafc with 16; also engine E' , by similar 

 gear on the other side, can independently drive drum D' at 

 either fast or slow speeds. Both drums can be coupled together 



Spar Deck / 



Main Deck 



Fig. 148. 



Fig. 149.— Wilson and Tafe's Double Gear. 



through the intermediate shaft by putting (22) in gear with 

 16 and 23 with 18. One engine, say E, can run both drums 

 together at slow speed by gearing the crank shaft to the inter- 



