Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 51
sion as the nativemetal. In mechanical applications, where the metal is not subject to greatheat, it is melted with phosphorus and cast into the shape desired, andthen ground or worked as the application may require. The firstapplication to which it was put was for the manufacture of the Mac-kinnon… … the thickness required. The metal is poured, as I have said, betweenthese plates, and the plates are brought suddenly together, on the planof a closed ingot with a hinge, so that as the metal cools it is subjectedto pressure which closes the pores and makes a very compact casting.The slabs for the…
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