ve of the Knibbs type in which the pressure on C will cause A to lift and will allow the screw being placed in position and turned by a suitable opening of the valve is performed automatically by the water to pass from the discharge to the suction. When tool. In Fig. 2 the improvement is shown as… … section thereof by means of the tube, GG, and the regu- Fig. 4KNIBBS VALVE AS USED ON FIRE ENGINES lating valve, H, or any equivalent therefor.” TO-DAY. section being then correspondingly shaped. In either eo case, as the screw is forced inward the outer surfaces of Meteorology in’ Persia. on the…
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