. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . of coal, etc., was thusshown to be not fully warranted, but alsomuch more moderate than he might havecorrectly made. The characteristic feature of novelty ofthe Winans coal hopper was, as stated inthe claim of the Winans Patent No. 5175,and shown in Figs. 1 and 2: Makingthe body of a car for the transportationof coal, etc., in the form of a frustum ofa cone, but, in actual practice, the upperportion of each of the sections whichformed the body, was in the form of afrustum of a cylinder, and w
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . of coal, etc., was thusshown to be not fully warranted, but alsomuch more moderate than he might havecorrectly made. The characteristic feature of novelty ofthe Winans coal hopper was, as stated inthe claim of the Winans Patent No. 5175,and shown in Figs. 1 and 2: Makingthe body of a car for the transportationof coal, etc., in the form of a frustum ofa cone, but, in actual practice, the upperportion of each of the sections whichformed the body, was in the form of afrustum of a cylinder, and was muchdeeper than the lower conical portion. Asshown in the patent, the cylindrical frus-tum top portion was of comparativelysmall depth, and the greatly deeper bot-tom portion was in the form of a frustumof a cone. Figs. 3, 4 and 5, which illustrate thelatest form in which the Winans coalhopper was built, are reproduced, on a re-duced scale, from a blue print, of the Balti-more & Ohio R. R. No. 2102, entitledCOAL HOPPER built by B. & O. R. , J. C. Davis, M. of M., Scale Wt FIG. 3 this patent, it appeared from the testi- = 1 ft., June, 1879, and the special fea- mony, that cars constructed by Mr. tures of the car, while not fully shown Winans. in accordance with the patent in the drawing, will be sufficiently clear specification, while weighing only 5,700 from a brief description. 104 RAILWAY AND LOCOMOTIVE ENGINEERING April, 1921 The underframe was composed of longi-tudinal and end wooden sills, and the coni-cal hopper bottoms of the three sheet ironsections of the body, projected down-wardly between the side sills, and werefurnished with drop doors. There beingno intermediate sills, free discharge of theload was permitted. The car would, atfirst sight, appear to have been carried
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