Improvements in Gauge Glass Fittings for Steam Boilers and the like
21,501. Vomhof, F., and Pries, R. Oct. 10. Water levels, indicating.-A head n of a gaugeglass is detachably connected to the boiler &c. through a cock b, and the valve i in the head is formed with an exchangeable steel valve seat and body. The cock b is adapted to receive a test-cock when the he...
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