Jasper County Democrat, Volume 2, Number 21, Rensselaer, Jasper County, 2 September 1899 — Perfect Castings of Copper. [ARTICLE]

Perfect Castings of Copper.

A Chicago chemist is. said to have at last perfected a method by which perfect castings of copper can be made. lie is alleged to have produced by his process castings free from sponginess and blow holes, with less than thirty-five hundredthsof one per cent, of impurities in the metal, without the use of either zinc or aluminum | alloys, and with 99 per cent, of conductivity for electrical purposes. A . chemical mixture, the composition of which is the discoverer’s secret, is added to the copper just before it is poured into the molds. This is said to take up the air in the heated metal and so prevent the formation of thorn gases which just at this point haw caused pure copper castings to be honeycombed with minute cells when it chilis. This problem of how te eliminate the honeycombing has bem. the basis of experimentation for yearn by both chemists and practical copper workers, and if a perfect result hao been achieved there is an enormous fortune in store for the inventor, who is Bertrand 8. Summers, now in the employ of a western electrical oomoom in Chicago.—N. Y. Timea J