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 954
vfi> … recess, will aid the thread in forcing in the breech-pin, and, during the discharge, will aid the screw-thread in resisting the recoil. In this way the breech-pin is held firmly in its place during the dischargeof the piece—a very important combination indeed. The forward end of the breech-pin is a…
Mechanical engineering
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