ken pieces to suit different kinds of of carbonized iron as it comes from the ‘‘ converting” work. This drill may be house. Hard coke is used as fuel and as each “ fur- erected any where and is nace” or melting bole has its separate stack or very easily turned by one chimmey, a strong draft is… … of great importance, as in many cases they re- LYON’S SELF-FEEDING HAND DRILL. quire to drill almost through the plate; and as the | the Scientific American Patent Agency on the 21st/are ready to be drawn or ‘pulled out,” the work drill will regulate this it is admitted by all who, of J anuary,…
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