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374 THE MARINE REVIEW FIG. 6—PORTION OF CARGO HOLD descent lamps. Separate circuits are provided for different parts of the ship. The deck is lighted by 32-candlepower lamps carried on poles amidships be- tween hatches. The hold is lighted by two 32-candlepower lamps at each hatch. A 15-inch searchlight is provided on top of the pilot house. Three staterooms are provided for passengers. One is fitted with twin brass beds, while double berths are provided in the others. These cabins are finished in white enamel, the furniture being mahogany. Carpet of a mulberry shade is fastened to the steel deck by means of screws. Quarters for the officers and crew are finished in oak with oak fur- niture. The private dining room aft is finished in quartered oak. A_ hospital room is fitted on the main deck aft, W. F. Wuite being the first ship on the Great Lakes to be equipped with facili- ties for taking care of sick or injured members of the crew. The rooms for the firemen and deck hands are finished in ‘steel throughout. How Cargo is Unloaded The arrangement of the cargo hold is shown clearly in Fig. 6. The steep, sloping sides of the hoppers permit the unrestricted movement of the cargo on the conveyor belts. There are 82 slide gates in the bottom of the hoppers, which cover the openings through which the cargo is fed on to the belts. These gates are mounted on ball bearings and -are moved by racks and pinions. Anad- justable lip is provided on the front of the gate, which is controlled by a lever. The pinion shafts are’ actuated by ratchet and pawl devices, as shown in Fig. 2. These devices are operated by reciprocating pipes driven by crank and connecting rods from the shaft of the hold conveyor drives. The two _ hold conveyor belts are 40-inch rubber. They run fore and aft and are arranged one on each side of the center line. These belts deliver the material to a bucket elevator, in which it is elevated from Conveyor, Drive October, 1915 the hold to about 30 feet above the deck and discharged on to the conveyor carried on the pivoted swinging boom, shown in Fig. 5. This boom is 150 feet long and permits the cargo to be discharged at a point 120 feet from the center line of the vessel. The hold conveyors, boom conveyor and elevator are driven by two vertical, single acting Westinghouse engines of 350 horsepower each. They are equipped with rope drive as shown in Fig. 3. The gate moving ~ mechanism is driven from a shaft which drives the two hold conveyors. The boom lifting mechanism is driven from the driving shaft of the boom conveyor. — The ball bearing sliding gates, are each equipped with individual moving mechanism. The latter, in addition to the racks, pinions, pawls and _ hand wheels, includes two lengths of pipe which run the length of the hoppers. These pipes operate the ratchet device together with the supporting rollers and pinions, through two driving mechan- isms which consist of crossheads, con- necting rods, cranks, gears and clutches. This apparatus gives the pipes a recipro- cating motion from the shaft which drives the hold conveyors. The two hold conveyors are 401 feet long. The belts run on_ troughing idlers, spaced 3 feet apart, return idlers being provided which are spaced 10 feet y 7 His 40" Conveyor ATE ae { ¢ Be/t Conveyor 4 re Counter Shatt 2 1 | |, 60" Boom Conveyor 7 2-40" Conveyors3 SE Tank Top y 40 “Conveyor Chute ¥-Shaped —T Pan Conveyor 40" Tandem Conveyor Drive Section on Center-Line of Ship FIG, 7—SKETCH PLAN OF CONVEYING APPARATUS