...pressure in the steam cylinder. It is to be noted that all suction pumps receive their water by reason of the pressure of the atmosphere on the surface of the water in the supply tank or well. This atmospheric pressure is about 15 pounds to the square inch, and is sufficient...

...by the afterwash from the tank or flush valve. As the contents of a siphon-jet closet are ejected by the pressure of the atmosphere on the surface of the water in the bowl, it follows that a considerable volume of air from in and around the closet will be carried...

...longer column in (b) by superior gravity begins to run out and would produce a vacuum at the upper end. The pressure of the atmosphere on the surface of the water in the beaker, however, prevents this vacuum by forcing the water up the short leg. This in turn follows...

...to the atmosphere, and therefore, the pressure at B must be less than atmospheric. It follows that the pressure of the atmosphere on the surface of the water in E will cause a flow from E up D. Thomson•s jet pump. — This experiment illustrates the action of...

...C, and the condensed steam and water flow downward through the discharge pipe to the hot well below. The pressure of the atmosphere on the surface of the water in the hot well maintains a column of water in the discharge pipe, the Fig. 139. Jet Condenser. height...

...vacuum." We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump. For example, let us consider the ordinary suction...

...vacuum." We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump. For example, let us consider the ordinary suction...

...commonest type of which is the jack-pump, which works by the expansion of air inside a cylinder, and the pressure of the atmosphere on the surface of the water in the well. If a pipe be placed vertically with its lowered end 'mmersed in water, and the air is exhausted...

...vacuum." We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump. For example, let us consider the ordinary suction...

...is lessened and its pressure on the water-surface (see Chapter vi) decreased in proportion, so that the pressure of the atmosphere on the surface of the water in the outer vessel, which pressure remains practically unaltered throughout the experiment, is able to...