ving the floats, will now open in proportion to the rise of the float. The M. A., in the American Journal of Science. when entering the tank, of the pressure of the water column egress slide will close in the same measure and at the same IMPLEMENT FOE GRINDING VALVES. by means of a vacuum chamber… … ber, because previous to starting the machine a vacuum or a But the largest ones were symmetrical ovoids; each being firmly against the seats. A rocking motion of the stem partial vacuum must be formed in it, and afterwards main- surmounted, however, by a roughened crown, Fig. 2. The will then…
Patents · Munn · Cotton · Iron · Gun cotton · Machine · Sewing machine · North polar · Scientific American · Large number · Antedated december · Vacuum chamber · Practical treatise · Water level · Heating surface
Internet Archive · Public domain (published before 1931). Free to use for anything.
