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 596
roved and widelyadopted variety of packing in which separate springs are employed. The ease with which the springsmay be bent and reset to the proper compass prevents set screws from being required: the only seri-ously objectionable point seems to be the expense of fitting and grinding steam-tight… … 1550.
Mechanical engineering
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