Milling machine - Wasyl, Hucal
My invention relates, more particularly, t milling machines for use in the production o propeller blades and by which the actual propel 5 ler blades, or patterns to be used in the manu facture of cast propellers, may be machine made it being necessary heretofore, in the manufac ture of propeller blades, to first -produce, b: hand-shaping, a master pattern to be used ih the making …
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