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 956
the hammer moves forward to fire the charge; and yet, when the hammer is drawn back, to pre-sent an obstruction to the stud 6, and be thereby tipped into the position shown at Fig. 2223, whichmovement will unlock the breech. As long as the hammer remains at half-cock the breech will be freeto turn… … of drawing back the hammer to its furthest extent (the bolt being first relieved) will raise the hand-catch i, which, being brought in contact with a ratchet-tooth on the breech, will turn the breech roundin the direction of the arrow, Fig. 2222, to the extent of one tooth, and thus bring up a…
Mechanical engineering
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