Method of making a pressure vessel for use in a paper making machine

902,641. Yankee dryer drums of papermaking machines. KIMBERLY-CLARK CORPORATION. Nov. 24, 1958 [Nov. 29, 1957], No. 37756/58. Class 96. The shell 4 of a Yankee dryer drum of a paper-making machine is formed of plates, e.g. rolled plates, of steel, aluminium, or bronze, welded together, and so shaped...

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Bibliographische Detailangaben
1. Verfasser:	JOHNSON CHARLES G. RUSSELL
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PERFORMING OPERATIONS PRODUCTION OF CELLULOSE PUNCHING METAL SOLDERING OR UNSOLDERING TEXTILES TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Zusammenfassung:	902,641. Yankee dryer drums of papermaking machines. KIMBERLY-CLARK CORPORATION. Nov. 24, 1958 [Nov. 29, 1957], No. 37756/58. Class 96. The shell 4 of a Yankee dryer drum of a paper-making machine is formed of plates, e.g. rolled plates, of steel, aluminium, or bronze, welded together, and so shaped that all weld seams lie at an angle with respect to the axis of the drum, e.g. greater than 5 degrees, 30 to 60 degrees being mentioned. The arrangement avoids chattering of a doctor blade 31, improves balance, gives uniformity of wear and internal stress and reduces distortion. The shell may be constructed by welding together pairs of similar trapezium-shaped plates 43, 44, Fig. 5, along their short sides 45 to form parallelogram-shaped plates 46 and then welding these together along their long sides 47. In a modification, Fig. 8, the shell is formed of rings 49 and wedge-shaped end-portions 50. A hood provided with hot air inlets and outlets may cover the upper part of the drum.