212 



THE WORLD'S ADVANCE 



even thousands ; and "S," that locomo- 

 tive is equipped with a superheater. 



The maximum tractive power of this 

 engine is 94,880 pounds, while its haul- 

 ing capacity at 10 miles per hour on a 

 level tangent track is 16,940 tons. In 

 marked contrast to this great machine is 

 the first locomotive to traverse a trans- 

 continental railroad. It was built for the 

 Central Pacific R. R. in the year 1863 

 and has a hauling capacity of 660 tons 

 under the conditions specified for the 

 Mallet locomotive. Additional data rela- 

 tive to the latter is presented in the fol- 

 lowing table: 



Total weight of engine 435,800 Ibs. 



Loaded weight of tender 189,200 Ibs. 



Capacity of tender, water 9*816 gal. 



Capacity of tender, fuel oil 36io gal. 



Total wheelbase of engine 57 ft. 7 ins. 



Total wheelbase of engine and tender. .90 ft. 4 ins. 



Diameter of driving wheels, outside 57 ins. 



Diameter of tender wheels 33 ins. 



Type of boiler Straight 



Working pressure per square inch... 200 Ibs. 



Outside diameter or boiler, first course 84 ins. 



Length of fire box, inside 126 ins. 



Width of fire box, inside 78.25 ins. 



Heating surface of superheater 839.0 sq. ft. 



Total equivalent heating surface . . 6876.0 sq. ft. 

 Grate area 68.4 sq. ft. 



The varied assortment of waterfalls 

 and artesian wells in the Palace of Ma- 

 chinery demonstrates the efficiency of the 

 many types of pumping and irrigation 

 apparatus on display. Chief among 

 these is an irrigation plant consisting 

 of an 80 h.p. Bessemer oil engine con- 

 nected by rope drive to a centrifugal 

 pump having a capacity of 5,000 gallons 

 of water per minute. The water is 

 forced through a 1 2-inch diameter wood- 

 stave pipe to a height of about thirty 



feet, from which it falls in a huge cata- 

 ract to a tank below. 



The largest color press ever built may 

 be seen in operation at the Palace of 

 Machinery. It is known as the Pan- 

 coast Universal Unit Press, and prints 

 a portion of the Sunday edition of the 

 "San Francisco Examiner/' This gigan- 

 tic machine is 48 feet long, 9 feet wide 

 and over 12 feet high. It has a net 

 weight of 130 tons and an 80 h.p. elec- 

 tric motor is required to operate the 

 mechanism. Every precaution against 

 accident has been taken by the applica- 

 tion of "Safety First" devices. The 

 gears are protected by iron guards, an 

 electric gong rings automatically just 

 previous to the starting of the machine; 

 contrivances are present which make it 

 impossible for a pressman to have his 

 hands caught between the cylinders, and 

 the entire operation of the press is con- 

 trolled by several electric push-buttons. 

 The construction is more rigid than here- 

 tofore attempted, and it is claimed that 

 the vibration has been so minimized that 

 a nickel can be balanced on the edge of 

 the top frame when the press is running 

 at full speed. The hourly capacity of 

 this press is 40,000 copies of a 48-page 

 paper, but the production varies with 

 the number of colors being employed and 

 the number of pages being printed. The 

 rolls of paper are 73 inches wide and 

 weigh 1,200 pounds each. Six rolls are 

 loaded on the machine at one time. The 

 Sunday edition of 250,000 copies of 80 

 pages each, requires more than 3,400 

 miles of paper of a width of one page. 



STEAMERS TO CARRY AERO- 

 PLANES TO ARCTIC REGIONS 



An aeroplane on each steamer which 

 plys to the Arctic regions will be the lat- 

 est use of this invention. The northern 

 route is frequently blocked by icebergs 

 and ice floes. Steamers lose much time 

 in searching for a channel and then 

 usually do not find the best one. The 

 plan adopted by a Norwegian steamship 



company and which will soon be put in 

 operation is to have an aeroplane on each 

 of their steamers, so that when ice is 

 sighted the aviator will ascend and fly 

 over the ice until he determines the best 

 channel. Then he will inform the cap- 

 tain by a signal system which route to 

 follow. This novel use of the aeroplane 

 will greatly reduce the time rate from the 

 Norwegian ports to the Russian destina- 

 tions on the Arctic Ocean. 



