n, if a well issunk (asshown at J, of all. upward, after which the plunger expels it through by the side of the engraving of the machine), a flow- o- an exhaust valve near the top of the side pipe. CHRISTIAN’S DEVICE FOR OIL WELLS. ing well will be the result, for it penetrates to the By this… … made, when some of the liquid escaped, and splash- ton, and as all the parts affected by heat are covered ing on the hands and arms of the workmen, caused with fire-clay, it forms a durable machine. The en- them to quit their hold of the ladle, which imme- gine, which the engraving represents, has…
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