^inches, a sw^itching speed of only 4.4 miles per hourwould produce this destructive pressure. In the table given showing foot pounds of energy,this information is given for three classes of cars, 60,000pound capacity, 80,000 pound capacity and 100,000 poundcapacity cars. 209 THE CARMANS HELPER… … Fig. 2—The 30,000 Pound Pendulum Hammer in a Draft GearTesting Laboratory. 210 THE DRAFT GEAR in the illustration, this structure carried a load of1,155,000 pounds at point of destruction. Fig. 2 shows
Railroad cars · Railroads
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![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-9-1@90.webp)