. 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. MOTION AND CONTROLLING DEVICES, ETC. 257. 680. PANTOGRAPHIC EN-GRAVING MACHINE. A cup or any article to be engravedis held in clamps in the centralpart of the machine and underthe cutting tool. The stile ortracer is at the long arm of thepantograph and follows the pat
. 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. MOTION AND CONTROLLING DEVICES, ETC. 257. 680. PANTOGRAPHIC EN-GRAVING MACHINE. A cup or any article to be engravedis held in clamps in the centralpart of the machine and underthe cutting tool. The stile ortracer is at the long arm of thepantograph and follows the pat-tern figures or letters, while theengraving cutter is pressed uponthe work by a lever. 681. GEOMETRICAL BORING AND ROUTING means of a set of cam gears within the square box and adjusting
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
