The Montgomery advertiser., 1905-05-21

unit switch control for the operation of railway trains and the single phase alternating current motor which he said was on one of his metropolitan care operating on a trial track at Trafford Park, England.
 The Cooper Hewitt mercury vapor lamp and converter which constitute two of the latest electrical develop ments made part of the exhibit. The lamp is the most efficient artificial light known and its striking character istics are economy and diffusion for general illumination. The light is pro- duced through the incandescence of the vapor of mercufy. It has been exten- sively applied to the illumination of railroad shops, piers, machine shops etc. The Cooper Hewitt mercury vapor converter is used for conveying alter hating current to direct current. This light was the specular feature of the exhibition, and added a special interest in that photographs of many distin- guished persons were taken by it. among them being Vive-President Fair banks, Col. Thompson, Vice Admiral Lord Charles Beresford. Sir Charles Ow- en, General Manager of the London Southwestern Railway, A. c. Ellis, Gen. eral Manager London Metropolitan rail way, President Vreeland, of the New York Metropolitan railway. Hon. H. K Porter, of Pittsburg, Admiral Schley the Chinese Minister, and Postmaster General Cortelyou. The Postmaster General was especially interested in the various safety appliances applied to the railway mail cars.
 From Washington the delegates will visit the great works of the Nesting house Company at Pittsburg, the Man chester and New Castle of America, where every facility will be afforded for the inspection of the apparatus un- der construction These workshops are reputed to be the most perfect in the world for the manufacture of railway appliances and to their favorable sItua- tion with respect to fuel, raw material, etc. as well as their exceptional ad- vantages for manufacturing and ship ping is ascribed the phenomenal growth of these industries At Wilmerding, near Pittsburg, the delegates will in- spect the home of the air brake, the capacity of which plant Is one brake per minute, and which has supplied over a million and a half air brakes now in service throughout the world. At the electric works nearby will be seen every essential detail of the gen. eration, transmission and utilization of electric energy.
 On May 16th was exhibited a one hundred and fifty car test track for the purpose of demonstrating the differ ence in operation of the improved type as compared with that on the stand ard quick action triple valve These improved valves reduce the time of service application on a fifty car train practically one half.
 Tests will also be made on a fifty car freight train, equipped with the im- proved type of triple valve, the fric- tion draft gear. the automatic brake, slack adjuster. and the automatic car coupler. These tests will be made on the Interworks Railway just outside the factories. The friction draft gear provides a yielding resistance of sev- eral times the maximum tractive pow CT of the largest locomotive. This great capacity to absorb shocks in train handling prevents the breaking of draft rigging and couplings and pro longs the life of the cars. The auto matic car coupler couples the air hose