Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Hacker. A cutting-tool for making an obli(pieincision in the pine-tree for leading the gtini turpen-tine towards the boc in which it is eollectey liuUocks. Hacket. (./vinen/.) A hatchet. Hack-file. {Locksmithinf/.) A Hack-hammer. A hammer terminating ateach end in an obtuse chisel-edge, kept in repair onthe grindstone. It is used as the pcc
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Hacker. A cutting-tool for making an obli(pieincision in the pine-tree for leading the gtini turpen-tine towards the boc in which it is eollectey liuUocks. Hacket. (./vinen/.) A hatchet. Hack-file. {Locksmithinf/.) A Hack-hammer. A hammer terminating ateach end in an obtuse chisel-edge, kept in repair onthe grindstone. It is used as the pccn of an ordinaryhammer, but is narrower, and therefore more localand energetic in its etfects. The hack-hammtr forreducing unequal protuberances on grindstones isshaped like an adze and has a short handle. Whenthe has worn unequally, it becomes ne-cessary to dress it, and the high places, being marked,are hacked by oblique and crossing checker lines,which it on the next grinding operation towear more at those points and thus restore equality. n r.
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