. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 760. BORING ELLIPTIC boring elliptic cylinders of considerable^ length the cylinder may move forward parallelwith the fixed boring bar on which a fixed spool,A, is set at the angle required by the elliptic pro-portions of the cylinder, and upon which a r

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. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 760. BORING ELLIPTIC boring elliptic cylinders of considerable^ length the cylinder may move forward parallelwith the fixed boring bar on which a fixed spool,A, is set at the angle required by the elliptic pro-portions of the cylinder, and upon which a ring,H, and tool holder revolve by a bevel gear andpinion, R, driven by the side shaft S. The tool, C,although cutting in a circular path, by its angulardirection produces an elliptic surface due to theangular plane of motion. 292 MILL AND FACTORY APrLlANCES AND TOOLS, ETC.

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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910