 | Alvin Wood Chase - 1860 - 228 pages
...the hardest, by heating to a cherry red, having it lie level in the fire, then with a pair of cold tongs put on a piece of brimstone, a little less in size than you wish the hole to be when drilled, and it softens entirely through the piece, then lay i$ by to... | |
 | Richard Moore - 1873 - 658 pages
...FOB DRILLING.— Heat to a cherry red, letting it lie level in the fire ; then with a pair of cold tongs put on a piece of brimstone, a little less in size than the hole will be when drilled, and it softens entirely through the piece ; let it lie in the fire until a little... | |
 | Alvin Wood Chase - 1876 - 948 pages
...Soften for Drilling.— Heat to a cherry red, having it lie level in the fire, then with a pair of cold tongs put on a piece of brimstone, a little less in size than you wish the hole to be when drilled, and it softens entirely through the piece; let it lie in the... | |
 | Leonard Elliott Brookes - 1906 - 664 pages
...ammoniac, stirring constantly. Softening Cast Iron. To s:"ften iron for drilling, heat to a cherry-red, having it lie level in the fire. Then with tongs,...iron entirely through. * Let it lie in the fire until cooled, when it is ready to drill. Suggestions how to Solder. Clean the parts thoroughly from all rust,... | |
 | Calvin Franklin Swingle, Frederick John Prior - 1906 - 676 pages
...ammoniac, stirring constantly. Softening Cast Iron. To soften iron for drilling, heat to a cherry-red, having it lie level in the fire. Then with tongs,...iron entirely through. Let it lie in the fire until cooled, when it is ready to drill. Suggestions how to Solder. Clean the parts thoroughly from all rust,... | |
 | Joseph H. Rose - 1906 - 340 pages
...cherry-red, having it lie level in the fire. Then with tongs, put on a piece of brimstone, a little less in 1 size than the hole is to be. This softens the iron entirely through. Let it lie in the fire until cooled, when it is ready to drill. To Tin Copper and Brass. Boil 3 pounds of cream of tartar, 4 pounds... | |
 | William Donaldson - 1918 - 260 pages
...ammoniac, stirring constantly. Softening Cast Iron. To soften iron for drilling, heat to a cherry-red, having it lie level in the fire. Then with tongs,...brimstone, a little less in size than the hole is to be. Tliis softens the iron entirely through. Let it lie in the fire until cooled, when it is ready to drill.... | |
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When this mixture has become cool, add one and three-eighths pints of water saturated with pulverized sal ammoniac, stirring constantly. Softening Cast Iron. To soften iron for drilling, heat to a cherry-red, having it lie level in the fire. Then with... 