Piston and shaft assembly for an end-of-car cushioning unit

A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are rem...

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Bibliographische Detailangaben
Hauptverfasser:	TONN, HOWARD E, FAGIN, DONALD R, SIGLEY, CLEBERN W
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED OPERATIONS CYLINDERS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS PISTONS SEALINGS THERMAL INSULATION IN GENERAL TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS
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Beschreibung
Zusammenfassung:	A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are removed from the cushioning device. The old shaft is substantially removed from the piston. The piston's true center is found, and a bore is cut through it. The bore is threaded, and an angled chamfer is cut in one end of the bore. A new shaft is provided with a threaded portion, the threads being adapted to mate with the threads of the bore. The shaft also has an angled chamfer adapted to mate with the bore's chamfer. The new shaft is connected to the old piston so that the threads engage and the chamfers abut.