DOUBLE WORK ENGINE.

Shannon News, 29 September 1925, Page 4

DOUBLE WORK ENGINE.

TO RUN TRAINS AT 120 MILES AN HOUR. ? A new locomotive engine of greatly increased tractive power, designed to run passenger trains at a speed of 120 miles an hour, has been invented by Mr. William C. Werry, a London engineer, whose steam engines have already been tested with success in marine’ craft. After many years of Experiment lielias brought to a successful issue the steam engine driven by cylinders fitted with two pistons working in opposite directions. The pistons begin their stroke together in the middle of the cylinder, and are forced outwards in opposite directions by the steam, each piston-rod driving its own crank. The locomotive is fitted with two cylinders fitted in the centre of the engine, each cylinder coupled with driving- wheels fore and aft, the two cylinders thus being equal in work to four ordinary cylinders. Equal forces being exerted in opposite directions they are perfectly balanced, and all oscillation of tlie engine when running at a very high speed is obviated, thus preventing all tendency to jump the rails. There are no couplings, as each driving wheel has its own motive power and a great saving in weight and wearing parts is thus effected. One of the principal firms of locomotive builders has prepared drawings for a large, fast passenger engine constructed on Mr. Werry’s lines, and when built it is to be tested in competition with existing locomotives.