Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 379
d state, a ram or plunger, accurately fitting the boreof the cylinder, is forced down by hydraulic pressure upon the semi-fluidmetal. This plunger is provided with a round hole throughout its entirelength, and as it is urged against the half solidified metal with enormouspressure, the lead yields,… … Section of Hydraulic Lift Graving Dock, emerges from the opening in the plunger, and these reels are then taken tothe bullet-shaping machine, which snips off length after length of the leadencord, and fashions it into bullets for the Martini-Henry rifle. The leadenpipes which are so much used for…
Inventions
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