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Updated: May 27, 2025
Knight's expeditious process consists in dusting fine iron filings on the wet graphite surface of the wax mould, and then pouring upon it a solution of sulphate of copper.
Hardwick pressed an electric button, and his secretary came in from another room. "Would you ask Mr. Hempstead to step this way, if he is in his room?" In a few minutes Mr. Hempstead entered, bowed somewhat stiffly towards the lady, but froze up instantly when he heard that she was the person who had given the Board of Public Construction scandal to the Evening Graphite.
"Guess I'll go down an' get a glass of beer," Joe said, in the queer, monotonous tones that marked his week-end collapse. Martin seemed suddenly to wake up. He opened the kit bag and oiled his wheel, putting graphite on the chain and adjusting the bearings.
Acheson, in 1891, was trying to make artificial diamonds and produced instead the more useful carborundum, as well as the Acheson graphite, which at once found its place in industry. Another valuable product of the electric furnace was the calcium carbide first produced in 1892 by Thomas L. Wilson of Spray, North Carolina.
When we had gone some way up this, we came to a sort of landing, and there was a block of stone let into the wall polished Denny said it was Aberdeen graphite, with gold letters cut in it. It said 'Here lies the body of Mr Richard Ravenal Born 1720. Died 1779.
"Yes," said the young woman, seating herself; "I came up to tell you that I procured for the Graphite that interesting bit of information." "So I supposed. My colleague, Henry Alder, saw Hazel this afternoon at the offices of the Board.
At Ballarat, an old man, Eddie Yudovich, was the watchman and general caretaker of the electrical generation plant. Actually, his job was a completely unnecessary one, since the plant ran itself. In its very center, buried in a mine of graphite were the tubes of hafnium, from whose nuclear explosions flowed a river of electricity without the need of human thought or direction.
He suggested the cutting out of the mica pieces almost to the bottom, leaving the commutator bars separated by air-spaces. This scheme was objected to on the ground that particles of graphite would fill these air-spaces and cause a short-circuit.
From trials conducted by Ledebur, it appears that cast iron is rendered suitable for foundry purposes i.e., to fill the moulds well and to yield sharp and definite forms free of flaws, to be cut with a chisel, and turned on a lathe through a certain percentage of graphite, whose presence depends on that of carbon and silicium.
This answers a triple purpose; it coats the mould with graphite, wets it ready for the bath, and expels air bubbles from the letters. This process prevents entirely the circulation of blacklead in the air, which has heretofore been so objectionable in the process of electrotyping.
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