Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 501
to wear oval. This tendency has not been found to occasion much inconvenience in oscillatingengines. In engines with the ordinary parallel motion the stuffing-box has a tendency to wear oval,which may be perceived if attention be paid to the setting of the parallel motion. If the piston bemoved…
Mechanical engineering
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