Cabot himself went right to bed, without waiting to wash or anything, and dropped instantly to sleep the moment he touched his pile of bedding; yet, so intent was he on wasting no time in getting Cupia on the air that he was up early the next morning.
He found his laboratory force sadly demoralized, owing to the absence of Quivven and himself, but he quickly brought order out of chaos, and set the men to work on their first real construction job, to which all the other work had been mere preliminary steps.
Quivven kept to her rooms, but one of the other maids roguishly informed him: “The Golden One says she hates you.”
Now that his fire-bricks were ready, Myles Cabot laid out on paper the plans for his smelting plant, all the units of which were to be lined with fire-brick.
First he designed a furnace for roasting his ore. This furnace was to be in two sections, one above the other, the lower holding the charcoal fire, and the upper holding the ore. Later he planned to use the sulphur fumes of this roaster to make sulphuric acid, which in turn he would use to make sal ammoniac for his batteries. But at present he had not yet figured out this process in detail.
The smelting furnace, for smelting the roasted ore into copper-matter, was to consist of a chimney about two feet in diameter, sloping sharply outward for about two feet, and thence sloping gradually inward again for a height of about ten feet. Near the bottom were to be a number of small holes leading from an air passage.
This air passage and the vent for the hot flames from the top of the smelter were to run in parallel pipes made of hollow brick tile, to two chambers containing a checkerwork design of fire-brick. The two pipes were to be interchangeable; so that, when the exhaust had heated one of the checkerwork grids to a red heat, the pipes could be switched, and the incoming air would be warmed by passing through the heated grid. From gnooper hide and wood he could easily construct bellows to pump in the air for the blast.
Molten copper-matte and slag would be separately run off through two separate openings at different levels near the bottom of the blast furnace.
To further refine the matte, he designed a Bessemer converter, that is to say, a barrel-shaped box of layers of fire clay, the inner layer being very rich in quartz sand. This barrel, when filled with molten matte, would be laid on its side; and a hot blast introduced through holes near this side would convert the matte into pure copper in about two hours.