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 953
then the breech-pin, dropping it in so that the tail of the button will come between the two pins on thetop of the breech-pin; then the pinion 2 with the dotted tooth in the last tooth of the breech-pin whenit is clear forward, on which there is also a dot; then put in the trigger-rack, placing it…
Mechanical engineering
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