etween the gas service-pipe and the C. Register, of 1907 Chestnut street, Philadelphia, Pa. specific gravity than 0-960, and hence ‘contains jess than 10 vessel is interrupted, this test-cock being used to ascertain In this device there is a water tight longitudinal boxing, per cent of gas. ‘if the… … New Alcohol Cock. tom of the vessel and the space. manhole, and the wires will have been carried through the service-pipe, the-alcohol will flow from the vessel into the It must also be remembered that Schlumberger’s proposi- longitudinal box from one station or enlargement to- the service-pipe and…
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