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is built into the ELWELL-PARKER imple design, first requisite of strength, is every- where evident in Elwe]]-Parker Electric Trucks. You find it in a single worm gear, connecting motor direct to drive axle. You find it in a one-piece lift platform. Again in a lift unit of three mov- ing parts. Only four heavy formed plates make up the basic frame construction. Specific steels to suit the needs of specific parts give added strength. Molybdenum, for example, is em- ployed for drive shafts. Chrome vanadium for universal joints. Where the bulk of the load is carried. The Elwell-Parker trail axle is a masterpiece of refined design and rugged strength, Operating freely in a restricted space. ~ Unusual Phosphor bronze for worm wheels. Always, the best for each part. Important as quality of steels are Elwell-Parker’s methods of heat treating. Some parts are double heat treated. Others go through the fire three times. These methods, worked out through twenty-five year’s experience pro- vide extra strength where it is most needed. And without surplus weight to sap the source of power. Twenty-nine parts in the Elwell- Parker drive axle are drop forged. The unusual strength produced by such engineering is important for you to consider. It means lower operating cost, lower mainten- ance, a bigger annual saving, longer period of service and there- fore a bigger return on an electric truck investment. : Elwell-Parkers are made in 39 standard sizes and types to fit the particular requirements of our terminal. Write The Elwell- Parker Electric Company, 4200 St. Clair Avenue, Cleveland, Ohio. " Handling and Shipping On Skids” is a new booklet we will be glad to send interested executives. 16 pages. 75 photo- graphs. A complete pictorial review of skid handling operations. Brimming with ideas. Send for it. No obligation. LWELL-PARKE Designers and Builders of Electric Industrial Trucks, Tractors and Cranes for a Quarter Century. MARINE REview—February, 1931