with the diamond points may ened by any motion of the arm, F, or by the reciprocating screws, B, for leveling the machine. be divided into two classes ; those which produce their effect motion of the tool stock. A presser bar, 8, holds the machine in a fixed position by mounted on a suitable… … vention has been mostly with- tion, meutioned above as belong- held from the public since, from ing to this class of machines. the fact that a patent was sub- The effectiveness of the revolving cutters is something sur- sequently granted to a Swiss inventor, Mr. Golay, which The sleeve, D, is…
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