Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 36
igs. 43 and 44, are in-tended to explain this. Fig. 43 might be turned into an oval ring; but it is more usual to cut suchirregular hollows into small square and round pieces, as explained. When thin rings or short tubes are required, they are frequently cut one out of the other in the lathe,in… … two cuts meet in the centre; very short pieces may be thus divided from the one end only. When therings are large and thin, it is desirable to plug them at one or both ends, with a thin piece of dry wood,turned as a plug to fill the diameter, and prevent the ivory from becoming oval in the course…
Mechanical engineering · Mechanics · Engineering
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