may be caused to project more or An ingenious Spark Arrester for locomotive smoke stack riage, E, which travels across the face of the stone on slides, or ordinary draft flues has been patented by M. Charles Mat- less by means of a regulating screw. BB’ are lubricating G. on the support, F. The… … DIAMOND TOOL NEW which is proportioned to that of the stone’s revolution. The the locomotive is in motion a vacuum is formed beneath the ventilator from the chamber, E, as shown by the arrows. diamond tool is actuated from the pulley, I, by the belt, T. plate increasing the draft, and the smoke and…
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