164 A TREATISE ON DREDGES AND DREDGING 



rail that carries the weight. This turntable is operated with much 

 less power than those of the usual type where the friction is 

 sliding. The wheels can be removed without unshipping the turn- 

 table. 



The operating room is arranged so that the captain can control 

 all the movements of the dredge without moving from his position. 

 He can also control the forward gypsies, but those aft, operated 

 by a separate engine, are manipulated by the crew. 



The dredge is equipped with an electric lighting plant, current 

 for which is generated by a 7J-K.W. General Electric generator 

 direct connected to a small vertical engine. The wiring is carried in 



FIG. 47. Dipper Dredge " Majestic." 



loricated conduit as in government naval works. A special system 

 of piping with hose connections is provided for fire protection, the 

 bilge and tank pump being arranged so that it can pump salt water 

 for this purpose. 



The "Independent" was designed by Mr. W. H. Arnold, chief 

 engineer of the Bush Terminal Co., the engineers of the Lidgerwood 

 Mfg. Co. co-operating in the detail designing of some features. 



This description of the dredge " Majestic/' Fig. 47, slightly con- 

 densed from a paper published in the Engineering News, February 

 7, 1907, will serve to illustrate a dipper dredge of large capacity: 



The dredge "Majestic " built for use on the improvement of the 

 West Neebish channel in the St. Mary's River, Michigan, has a num- 



