Compressed air . ly being practically inex-haustible and, it being possible to manufacturealcohol almost anywhere, there will be nonecessity for payment for long freight hauls. A NEW STONE DRESSINGMACHINE The Thomas H. Dallett Co., of Philadelphia,has latelv brought out a new large stone dress-ing machine of the sliding-arm type. The toolhas several novel features. By taking off twonuts at the top of the tool, the valve-box, valve,piston and barrel can be removed, and on be-ing replaced, there are no adjustments to be made, the parts being replaced in their orderand the nuts screwed down tight
Compressed air . ly being practically inex-haustible and, it being possible to manufacturealcohol almost anywhere, there will be nonecessity for payment for long freight hauls. A NEW STONE DRESSINGMACHINE The Thomas H. Dallett Co., of Philadelphia,has latelv brought out a new large stone dress-ing machine of the sliding-arm type. The toolhas several novel features. By taking off twonuts at the top of the tool, the valve-box, valve,piston and barrel can be removed, and on be-ing replaced, there are no adjustments to be made, the parts being replaced in their orderand the nuts screwed down tight. Economyin the use of air has received a great deal ofattention during the design and developmentof the tool, not only to render it long-lived, butalso to reduce the air consumption to the min-imum. At 80 lb. pressure the tool will consumeabout 50 cu. ft. of free air per minute, and atlower pressure a correspondingly less quan-tity. All parts of the tool are hardened andaccuratelv ground. The exhaust hose can be. attached to either side of the tool, blowing thedust from the working surface of the stone ineither direction, as the operator may desire. The upright consists of two parallel bars,with separating pieces between, the whole se-curely riveted together. On the lower end ofthis standard is cast a massive cylindricaljournal, becoming an integral part of it andforming as a whole a bifurcated rotatable up-right. The journal rotates in the bearingformed in the upright extension of the bearing is lubricated with grease and pro-tected from the cutting action of the stone-grit by a leather cap, which fits over the top-of the bearing. The bearing surface is 17 and 6^ in. in diameter. The horizontal arm carrying the tool is I-beam, with the sides faced with arm travels back and forth on rollersmounted in the carriage, which is movable upand down on the upright by means of thehand-wheel, drum and ratchet, as shown in thecut. The position of this h
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcompres, bookyear1896
