Fig. 3, is a plan or horizontal view of the same, as it would appear when seen from above. In all which figures simi¬ lar letters refer to corresponding parts; a , a, is the bucket or piston of the pump, having two valves, b, h, opening upwards as usual ; c, c, are bent arms, for the purpose of… … “ The diaphragm, e, e , is a tube of leather or other suitable flexi¬ ble material, which is air and water tight. It is made from a disk of leather, rather larger in diameter than the interior of the pump barrel, in the centre of which a circular hole is to be cut, rather smaller than the interior…
Science -- Periodicals · Technology -- Periodicals · Patents -- United States -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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