short crank-case to be used, with a resultantiving of weight, without any undue sacrifice ofrength. The crank-case is of aluminum especiallyrengthencd by ribs. Both intake and exhaustlives are of large diameter and mechanically _ a&4
Aeronautics
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-1027-531.webp)
