bolted down on a square base , which has nine openings for ad - mitting the air into the cylinder , and Fig . i59 - — Bottom of Biowing Cylinder . one large opening for its exit . The a , Bottom . bb , Vaive openings . c,Discharge f orme r openings are fitted with flap P s ’ valves , made of an… … the piston rod , and has three open ings for the admission of the air , and five smaller openings placed inside of the branch cast on the cover for Fig . iöo . — Cover and Valve Boxes for Biowing the exit of the air . The former are Cylinder . fitted with valve boxes , which are A , Cover , b B ,…
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