THE CABLE SHIP ON REPAIRS. 259 



In the latest sets of gear fitted by Messrs. Johnson & Phillips 

 to the "Patrol," "Restorer," "Pacific," "Okinawa Maru," 

 " Ogasawara Maru," and other cable ships the engines are 

 placed fore and aft of the gear, thus permitting the drums to 

 be brought closer together than when the engines are placed 

 side by side. The machine practically comprises two complete 

 and independent sets of gear, both of which may be used either 

 for picking up or paying out. 



The engine crank-shafts are at right angles to the respective 

 first-motion shafts and drive thereon through double-helical 

 bevel gear. The pinions on the crank-shafts can be put in or 

 out of gear, so that either engine can be used or both together. 

 The drums also may be driven in opposite directions, one pick- 

 ing up and the other paying out, by reversing one engine, or 

 they may be coupled together when paying out on one drum 

 so as to have the use of both brakes. The engines are double- 

 cylinder verticals, 8 in. by 8 in. stroke, each capable of developing 

 110 B.H.p. at 150 lbs. steam pressure. With both engines in 

 action therefore the gear is well able to lift a load at the bows 

 of 25 tons at a speed of one nautical mile per hour. When 

 picking up in deep water with a strain at all approaching this 

 load, both engines are put in gear to drive one drum. In 

 ordinary work one engine is sufficient for picking up or paying 

 out, the other engine being a stand-by, so providing against the 

 possibility of a total breakdown at any time while at work. 



Two reductions are provided to each set of gear, a fast and 

 intermediate on one set and a slow and intermediate on the 

 other. At the fast speed (four nautical miles per hour) the 

 gear is capable of raising a load of 6;| tons at the bows. 



Each drum is provided with two " knives " for fleeting the 

 cable, either of which can be used (the other being thrown 

 back off the drum) to suit an inside or outside lead as the case 

 may be. The drums overhang the frame on each side and 

 are internally geared and driven by pinions. Thus the strain 

 which comes on the external face of the drum in picking up is 

 counteracted by the driving pinion acting on the internal face 

 at approximately the same radius, and consequently no strain 

 is transmitted through the arms. There is, of course, very little 

 clearance between the brake drum and framework, in order to 

 keep the pull as near the frame as possible, and for the same 

 reason the internal teeth are on the edge nearest the frame. 



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