Society of Glass Technology · [Sheffield] · leaf 536
on (C. H. Rankin, C. H. Blumenauer, and C. J. P. Pratt,all in West Virginia, U.S.A.) (Brit. Pat., November 6th, 1919, No.143794. Provisional No. 27379).—Relates to a cam-operatedvalve mechanism for controlling the compressed-air supply topneumatically-driven apparatus such as the glass-delivery… … sa ¥ it w i 21- Fig. 97.
Glass
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