. American engineer and railroad journal . The difficulty of holding the left main valve cylinder headfor boring has developed a chuck, which is fitted to the spindleof a lathe, that performs this service most satisfactorily at thoReadville shops. This chuck consists of a face plate secured to the lathe spin- ^,4.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering