The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

March, 1914 THE MARINE REVIEW FIG. 3--THE HONOLULU CRANE supplied by means of a triple cylinder Diesel engine, made by- the Busch- Sulzer Bros. Diesel Engine Co., St. Louis, direct connected to a 100 k. w., 220-volt, direct current generator. Each of the cylinders is 18 in. in diameter and the engine has a stroke of 24-in. and is rated: at 225 h. p. In addition to this source of power there is also installed on the pontoon an .Edison storage battery having a capacity of 600 k. w. hours, which may be used in case of emergency. There are two separate sets of mech- anism for operating the 75-ton hooks and these mechanisms are so. ar- ranged that they may be clutched to- gether when using the two trolleys for the maximum load of 150 tons. Each 75-ton winding drum is geared to a 60 h. p. motor, and arranged to hoist its load of 75 tons at the rate of 8 ft. per minute. Change speed gears are also introduced into this mechanism so that the empty hook .can be hoisted. at the rate of .100 ft. per minute. This mechanism is lo- cated. in one of the machinery com- FIG. 5--VIEW OF.CRANE FOR BOSTON NAVY YARD 'gears are also 105 FIG. 4--DIESEL. ENGINE BUSCH-SULZER TYPE partments of the pontoon and in the same compartment is also located the machinery for traversing the 75-ton trolleys... Each. of the trolleys 1° provided with a separate winding drum which is operated by means of a 374%4-h. p. motor, and the arrange- ment of the separate mechanisms is such that they can be clutched together when using the two trolleys at. the same time for the maximum load. The gearing of the trolley mechanism is such that the trolleys under full load can be traversed across the bridge at 50 ft.. per minute. In this compartment are located the magnet- ic control boards for the motors. In the other machinery compart- ment with the engine generator set is located the machinery for the aux- iliary hoist and trolley. The auxiliary hoist drum is geared to a 60-h. p. motor of a duplicate type of those used for the main hoist. The gearing of this mechanism is such that a 15- ton load can be hoisted at the rate of 35 ft. per minute. Change speed introduced into this mechanism so that the empty hook may be hoisted at the rate of 100 ft. per minute. The auxiliary trolley travel drum is geared to a 37%4-h. p. motor. The gearing of this mechan- ism is such that the auxiliary trolley can be traversed across the bridge at _ a speed of 200 ft. per minute. The counterbalance pump is' also located in this machinery _compart- ment. This pump is of centrifugal