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 595
of the piston. The inner ring is equal in depth to the two outside rings. When the rings are turned totit the cylinder and each other, they are hammered on the inside, to give them a tendency to springoutwards, and are then cut tlirough, to allow them to expand. The divisions of the rings are… … 1541.
Mechanical engineering
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