. Clearing land of stumps. Clearing of land; Explosives in agriculture. under the stumps at the rate of 500 or 600 a day, and at very much lower cost than the same work can be done by hand. The machine bores almost as fast in wood as in earth, and is particularly Power Boring serviceable when roots have to be penetrated in order to get the charges to the right spots. Machines can be bought complete in small sizes suited to land-clearing purposes, or can be bought in parts and assembled on home- made frames. Electric machines are most convenient. Steam and compressed air machines are next best.
. Clearing land of stumps. Clearing of land; Explosives in agriculture. under the stumps at the rate of 500 or 600 a day, and at very much lower cost than the same work can be done by hand. The machine bores almost as fast in wood as in earth, and is particularly Power Boring serviceable when roots have to be penetrated in order to get the charges to the right spots. Machines can be bought complete in small sizes suited to land-clearing purposes, or can be bought in parts and assembled on home- made frames. Electric machines are most convenient. Steam and compressed air machines are next best. Flexible shaft machines and direct-geared machines are least satisfactory. The flexible shafts break. The steam outfits freeze up and are troubled with burst pipes. All the outfits except steam ones can be run by gasoline To show sticks of explosives expanded, as permitted by splitting of stick wrappings, in big hole. An electric boring outfit consists of a small gasoline engine—say about 5 horse power—on a wagon belted or geared to a 3 kilowatt dynamo, and that equipped with two drill heads and 200 feet of electric cable. A supply of l}^- inch augers completes the outfit. Such an outfit costs about $500. You can use any gas engine. The dynamo will cost somewhat less than $250, and the drills about $80 each. It takes five men to run this outfit—two men on each drill and one man to drive and to handle the cables. This man should lift the cables carefully over stumps and prevent them from kinking and getting caught. The steam and compressed air and the direct drive machines will not be described, be- cause improvements continually are coming out. Watch the farm papers for advertisements, or write to any maker of explosives for names of manufacturers of these machines, if you are interested in them. 26. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these ill
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectexplosi, bookyear1917
