. Railway mechanical engineer . Arrangement of Moulds torValve Stem Packing. Plan of Base Plate. 4 Pipe Tap Details of Machine for Making Metallic Packing pneumatic cylinder for shearing the gates is bolted to machine can be operated either by steam or air but onaccount of the condensation from steam, air is preferable. Two cylinders are used to raise and lower plates C and Dby means of a four way valve which will allow air to passinto the head ends of both cylinders to close C and Dagainst A, or the opposite sides of the pistons to open platesC and D. When C and D are closed against A a

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. Railway mechanical engineer . Arrangement of Moulds torValve Stem Packing. Plan of Base Plate. 4 Pipe Tap Details of Machine for Making Metallic Packing pneumatic cylinder for shearing the gates is bolted to machine can be operated either by steam or air but onaccount of the condensation from steam, air is preferable. Two cylinders are used to raise and lower plates C and Dby means of a four way valve which will allow air to passinto the head ends of both cylinders to close C and Dagainst A, or the opposite sides of the pistons to open platesC and D. When C and D are closed against A and theplugs G and molds K are in proper place, the metal canbe poured through the gates in the plate C. After the metalsets, plate C shears the gates and air is admitted to the rod side of the pistons, thereby causing plates ( and l> to moveaway tnim I allowing the operator to remove the packingfrom the molds. In order mat the packing may be1mm Tins, the molds and plungers are set on springs V, which take up am variation in alignment between 1, Band C. This machine has been in continuous

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering