. American engineer . able to satisfy all conditions specifiedand gave great steadiness and flexibility on the trial track laiddown at the builders works to represent the worst conditionsthat would be met in service. ADJUSTING SAFETY VALVES* BY C. L. DICKERT. Assistant Master Mechanic, Central of Georgia, Macon, Ga. For the past eight years the testing and adjusting of safei;yvalves at the Macon shops of the Central of Georgia hrs beenmost successfully performed on the device shown in the ac-companying illustration. This consists of two old air brakecylinders; one 12 in., and the other 6 in. i
. American engineer . able to satisfy all conditions specifiedand gave great steadiness and flexibility on the trial track laiddown at the builders works to represent the worst conditionsthat would be met in service. ADJUSTING SAFETY VALVES* BY C. L. DICKERT. Assistant Master Mechanic, Central of Georgia, Macon, Ga. For the past eight years the testing and adjusting of safei;yvalves at the Macon shops of the Central of Georgia hrs beenmost successfully performed on the device shown in the ac-companying illustration. This consists of two old air brakecylinders; one 12 in., and the other 6 in. in diameter, the smallerbeing secured on top of the larger, and each fitted with a pistonhaving a common piston rod. On the top of the smaller cylin-der is a cap threaded for a 3>-4 in. safety valve. Bushings aremade to fit this cap and allow the application of other sizes ofvalves. A standard gage and also a connection to the shopair supply line is connected to the 2 in. passage in the rap. An /?e/eoie--«^&ar. Device for Testltig and Adjusting Safety Valves. air line is also carried to the l.)ottom of the larger arrangement of the piping and the location of the valvesfor admission and release are shown in the illustration. Allof this apparatus is fitted in a special bench which has a cabinetfor storing the fittings and parts. V the safety valve to be tseted and adjusted is secured inplace, a valve is opened which admits air above the piston of theupper cylinder. When the full pressure of the shop supply line,usually 100 lbs., is attained, the valve controlling this connectionis closed and air is admitted to the bottom of the large cylinder. *Mr. Dickert informs us that the idea of this machine was obtained anumber of years ago from some mechanical journal. As the name of thepaper has been forgotten, proper credit cannot be given, but in view of theValue of the device, which is evidently not generally known, it seems ad-visable to again give it publicity.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
