third the chemical labora- culating-tubes. At the end of the circulating-tubes, a steel ladder, made in any desired length. In order to tory. In the basement is a physical laboratory, store- valve casing is located, comprising two chambers, room, etc., and there is a sub-basement suitable for which… … the steam ‘will not encounter a solid, closed valve, as in THE MARTIN RADIATOR VALVE. THE LADDER FOLDED &ND LAUNCHED. the customary construction, but will pass through the valve-casing and back to the boiler, thereby obviating the back pressure usually caused by cutting off the reinforce the loop,…
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