rge. so long as steam is supplied from the boiler. A small pet tions. Its capabilities will beBt be understood from a de- Small pumps of this form are constructed specially for the cock, shown near the top of the cylinder in Fig. 2, admits scription of its mode of action which we will now give from… … through the ucper disk. In the aoise was terrific, and could be operation of the pump thus heard for a distance of more THE PRALL AUTOMATIC STEAM VACUUM PUMP. constructed, when the cylinder than two miles. The noise was is filled with water, the pressure on the under side of the above the plate, F…
Patents · Consists · Gage · Iron · Narrow gage · Improved · Upper thread · Upper side · Scientific American · Young machinist · Steam boiler · Steam engine · Broad gage · Lightning rods · Solid emery
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