. Appleton's dictionary of machines, mechanics, engine-work, and engineering. the top of the cylinder, so that the steam may blow out into th«s air wHeu the piston nses above theiredges. It may here be remarked that the efficacy of the blows of the hammer, and the security fromdamage to the parts of the machinery, are in thif case, as in that of the steam forge-hammer, materiallyaugmented by the recoil of the air or steam inclosed above the piston. M, the piston, formed of wrought-iron, and fitted with a single packing-ring. N the piston-rod, having a cylindrical boss or enlargement n, at its
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. the top of the cylinder, so that the steam may blow out into th«s air wHeu the piston nses above theiredges. It may here be remarked that the efficacy of the blows of the hammer, and the security fromdamage to the parts of the machinery, are in thif case, as in that of the steam forge-hammer, materiallyaugmented by the recoil of the air or steam inclosed above the piston. M, the piston, formed of wrought-iron, and fitted with a single packing-ring. N the piston-rod, having a cylindrical boss or enlargement n, at its lower extremity, for the purpose PILE-DRIVER. 479 of affording means for securing a slightly elastic connection, by hard-wood washers, between the piston-rod and hammer-block. O, the hammer-block, consisting of a rectangular mass of cast-iron, weighing 30 cwt, adapted to slidefreely but without much play, within the pile-case G G. It is furnished with suitable recesses for thesecuring of the hammer, piston-rod, &c, and for enabling it to rise clear of the cylinder stu
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
