. 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. ble resistance W, and fromthence through a flexible cable to thecarbon holder 2 and the carbon pen-cil K. The operator manipulateshis holder 2, the metal to be fused,placed upon the table, being joineddirectly to the negative terminal ofthe battery. By inserting the p
. 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. ble resistance W, and fromthence through a flexible cable to thecarbon holder 2 and the carbon pen-cil K. The operator manipulateshis holder 2, the metal to be fused,placed upon the table, being joineddirectly to the negative terminal ofthe battery. By inserting the plugin the switch board U, the operator may obtain currents from 5 cells, twice 5, and so on to 10 times 5 Carbon holder, carbon pencil at work. ELECTRIC WELDING. The operator wears strong leather gloves, and his hand is further protectedby a metal screen fixed on the looks at his work through a darkglass, which protects both his eyesand face from the radiated light andheat better than ordinary dark spec-tacles would do. The lungs also mayneed protection from the vapors ofcopper, lead, and other metals oralloys. When possible, means shouldbe provided to carry off such vaporswith a blast of air. The constructionof the holder permits of a quick re-placement of the carbon pencil. See Fig. 425 for
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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910
