Arizona republican., 1905-05-22

perfected within the present year. This system is already being installed on the great inter urban lines of Indiana ana Ohio, to provide a fast passenger and freight service between Indianapolis Columbus and Cincinnati. The Swedish government has ordered one of these motor locomotives for trial with the expectation of replacing the steam loc- Omotive now in use.
 A. c. Ellis, general manager Of the London Metropolitan Railway, was an interested visitor. He inspected the exhibit minutely, particularly the new unit switch control for the operation of railway trains and the single phase alternating current motor which be said was on one of his metropolitan cars operating on a trial track at Traf. ford Park, England.
 The Cooper Hewitt mercury vapor lamp and converter which constitutes two of the latest electrical develop ments made part of the exhibit. The lamp is Che most efficient artificial light known and it's striking character l istics are economy and diffusion for ! general illumination. The light is pro- cured through the incandescence of the vapor of mercury. It has been exten- sjvely applied to the illumination of AdAlAOd0 oAlOpSs plSISs IldClllile SDODS, etc. The Cooper Hewitt mercury vapor converter is used for converting alter mating current to direct current. This light was the spectacular feature of the exhibition. and added a special inter- i est in that photographs of many dis tinguished persons were taken by 1t. among them being Vice President | Fairbanks, Col. Thompson, Vfce-Ad- miral Lord Charles Beresford. Sir | Charles Owen, General Manager of the London Southwestern Railway. A. c. Ellis, general manager London Me i tropolitan Railway, President vree- land, of the New York Metropolitan railway, Hon. H. K Porter, of Pitts. burg. Admiral Schley, the Chinese minister, and Postmaster General | CortelyOu. The postmaster general ] was especially interested in the various | safety appliances applied to the rail- { way mail cars.
 From Washington the delegates vis- ! ited the great works of the Nesting ! ica, where every facility was af- i delegates inspected the home of the Manchester and New Castle of Amer ica, where every facility will be af- ] forded for the inspection of the appaI- atus under construction. These work 1 shops are reputed to be the most per- l feet ip the world for the manufacture
 of railway appliances and to their flaw Orable situation with respect L., fuel. raw materials, etc, as well as their
 exceptional advantages for manufac- 1 turing and shipping is ascribed the l phenomenal growth of these industries. At Wilmerding, near Pittsbulg, the delegates will inspect the home of the
 air brake, the capacity of which is
 one brake per minute, and which has supplied over a million and a halt
 brakes now in service throughout the
 world. At the electric works nearby
 will be seen every essential detaIl for the generation, transmission and utiIs
 ization of electric energy.
 On May 16th was exhibited q one
 hundred and fifty car test rack for the
 purpose of demonstrating the difference
 in operation of the improved type as
 compared with that of the standard
 quick action triple valve. These i'm
 proved valves reduce the time of ser
 vice application on a fifty car train
 practically one half.
 Tests were also made on a fifty
 car freight train, equipped with the
 improved type of triple valve, the fric-
 tion draft gear, the automatic brake
 slack adjuster. and the automatic cal ! coupler. These tests were made on
 the InterwOrks railway just outside the 1. factories. The friction draft gear pro-
 vides a yielding resistance of several times the maximum tractive power ol the largest locomotive. This great ca
 pacity to absorb shocks in train hand
 ling prevents the breaking of draf rigging and couplings and prelongs the
 life of the cars. The automatic cal , coupler couples the air hose between
 the cars at the when the car coupling is effected.
 The visit afforded an exceptiona opportunity for an inspection of 'tht
 principal railway appliances whicl represent over quarter of a centur! 1, of American invention and skill and thc
 Pittsburg trip proved an important event in the annals of the internatiOna
 railway congress.
 CHARLES c. RANDOLPH.