. American engineer . SecHon Through P/s^rtand Cif/inderz. K 17 Square—■>l Air Hammer for Light Smith Shop Work. blow can be easily regulated by this treadle. Pipes connect toboth ends of the cylinder. The piston is raised by the air pres-sure acting on the small annular space on the underside of thepiston. The pressure is always applied to this end of the pis-ton, while the main valve is open, but the resultant lifting forceis only sufficient to raise the piston and does not materially de-tract from the downward force of the hammer. The exhaust isaccomplished, as shown in the illustration,
. American engineer . SecHon Through P/s^rtand Cif/inderz. K 17 Square—■>l Air Hammer for Light Smith Shop Work. blow can be easily regulated by this treadle. Pipes connect toboth ends of the cylinder. The piston is raised by the air pres-sure acting on the small annular space on the underside of thepiston. The pressure is always applied to this end of the pis-ton, while the main valve is open, but the resultant lifting forceis only sufficient to raise the piston and does not materially de-tract from the downward force of the hammer. The exhaust isaccomplished, as shown in the illustration, through the 1 in. holein the piston and the f^ in. outlet. The bottom of the yoke isfastened to the base casting by four 1/% in. bolts, and the anvilblock is held to the yoke by a wedge. The cost of making thishammer is very small, and with it from 600 to 700 brake shoekeys can be made in ten hours. Credit should also be given toL. Lozo, locomotive foreman of the Grand Trunk Pacific atFitzhugh, Alberta, for the design of this machine. German Express
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
