If it end up being set to its minimum placement, the steam escaping from the control device will become free of charge to escape between the best of the valve and the cover, through the central aperture, and thénce between the top advantage of the band, u, and the disc, n, without materially helping to lift or hold up the control device; but, by establishing the band, u, nearer tó the under surface of the drive, n, and thus reducing the room for the get away of vapor, it will end up being caused to take action, by its elastic drive, against the annular space, o, of thé cap-plate, ánd hence assist in raising the valve and holding it up.Crosby Steam Gage Worth Opinion of the Courtroom by Samuel Blatchford.Richardson, Sept 25, 1866, for an enhancement in vapor safety-valves.Similar colours and words of benchmark indicate related parts in the several numbers A, A new, is the head of the safety-valve; B, B, T, B, are wings to lead the control device into its seat, E, At the; c, chemical, is definitely a round or annular flange or lips, extending over, slightly below, and fitting loosely about, the external advantage of the valve-seat, At the.
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