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ulp HE accompanying illustration shows a vertical cross section of a steam-driven marine-type gene- rating set, built by Engberg’s Electric & Mechanical Works, St. This unit is built in a range of sizes from 6 to 15 kilowatts, and the de- signer has made an effort to free both the engine and generator from unnecessary complication and to pro- vide easy and positive means of ad- justment and ready accessibility to all working parts. Removable side doors are provided on each side of the en- gine frame, allowing access to the crosshead, wrist pin and adjacent parts; the hand hole plates on the opposite sides of the engine frame give access to the lower end of the connecting rod. Theve engine is equipped with a balanced piston valve. The fly wheel is so designed as to retain the greater part of the weight up close to the main bearing of the engine frame, to some extent reliev- ing the breaking strain on the shaft. The governor, designed by the build- ers of the engine, is constructed to control the speed within 2 per cent from no load to full load. The en- gine is equipped with an automatic lubricating system. The generator is constructed according to modern elec- trical standards and the material for the field frame and pole pieces is CLG : FIG. 1—SECTIONAL VIEW OF MARINE-TYPE GENERATING SET Joseph, Mich.. In 1ent Used Marine Type Generating Set—Automatic Whistle Control loat ana WILLETT-BRUCE AUTOMATIC . WHISTLE CONTROL specially selected for the high magnetic permeability addition ‘of. the metal to the set shown 122 employed. in the accompanying illustrations, Engberg’s — Electric & Mechanical Works cope structs marine generating sets in sizes ranging from 1 to 3% kilowatts and also from 15 to 50 kilowatts. The company also manufactures search light projectors, switchboards and — other auxiliary apparatus. Whistle Control McNab Co., Bridgeport, Conn, steamship — specialties, has developed the Willet-Bruce auto- matic whistle control, the details of which are shown in the accompanying illustration. This device is operated electrically, but should the electrical plant on the ship be temporarily out of order, the ordinary lanyard gear may be used; in fact it can be used with the auto- matic gear, if desired. The McNab Co. also manufactures a direction and revolution indicator. This device enables the captain to see that his engine room orders have been instantly and correctly carried out. It indicates the number of revolutions ahead and also shows whether the screw is work- ing forward or backward. It is stated that 90 per cent of the vessels now under construction in the United States will be equipped with these indicators, which are built in four different styles. The manufacturer of FIG. 2—MARINE-TYPE STEAM-DRIVEN GENERATING SET |