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 . in J>osition wliile being liored by a set screw having a handle. Hub-boring Ma-chine. The machine () bores the hub by thi rotation of the latter ra-ther than of the former. The boring-tool is mountedFig.

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Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering