chanical work of forcing in the feed water is no doubt well enough used but the whole amount of steam drawn from the boiler is out of all proportion to the work done. say four times as much as a non-expan sive direct-acting steam pump requires and the most 4 4. AN IMPROVED ELEVATOR ALARM. The accompanying cut shows an elevator alarm de vice for which letters patent were granted to Mr. John EINIG'S ELEVATOR ALARM. THE BOYNTON BICYCLE ENGINE. This novel machine suggesting a very radical change in railway construction arrived in New York last week from Portland Me. where it was built. It weighs twenty-two tons and came on a truck attached to the rear of a regular train. The total height of the machine is 15 feet 6 inches and it has a single driving wheel of 7 feet 9 inches diameter with double flanges to ride on a single rail. The cab is two stories high the upper story being occupied by the engineer and the lower story by the fireman. The engine has two cylinders 12 by 14 inches each and is designed to be operated with a boiler pressure of 150 pounds to the square inch. The passenger cars to be drawn by this engine are to be 4 feet wide and 14 feet high in two stories and such cars 40 feet long are designed to weigh five tons and carry 108 passengers each. The engine and train are to be kept on their single track by upper wooden guid ing beams supported fifteen feet above the track below by a bridge-like skeleton frame arching the roadway. The freight cars are to be of similar height and width and it is designed that the two rails of an ordinary track shall form a double track for bicycle trains with out altering the tracks used for the present cars and engines the guiding beams and skeleton frames being out of the way of trains made up of locomotives and cars as now built. It is designed by this form of construction to save greatly in weight and friction reducing the weight of the cars both passenger and freight relatively to the load carried and saving power lost
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