. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 90 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [March, off plates or slides wHli the governor, so that the steam may be cut off earlier or later by the action of the governor. This is etFected by an apparatus con- sistini; of a heaiistock sliding on a bed and attached by a link to the end of the eccentric rod, and by another link fastened on to a cam mounted on the headstock at one end and at the other end the hell crank lever before de- scribed. The headslock is connected by
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 90 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [March, off plates or slides wHli the governor, so that the steam may be cut off earlier or later by the action of the governor. This is etFected by an apparatus con- sistini; of a heaiistock sliding on a bed and attached by a link to the end of the eccentric rod, and by another link fastened on to a cam mounted on the headstock at one end and at the other end the hell crank lever before de- scribed. The headslock is connected by bevil wheel to the shaft of the fly wheel and the governor, the action of the latter moves the headstock backwards and forwards according as it expands or collapses, and the cam round its axis; this movement regulates the cutting off slides, and causes the speed of the engine to go quicker or slower as may be required. IMPROVEMENTS IN MAKING IRON' AND STEEL. Charles Low, of Robinson's Row, Kingsland, Middlesex, for " Improve- ments in the mahmi/ or manufacturing iron and ;âGranted May 25 ; Enrolled Nov. 25, 1844. These improvements relate to the manufacture of laalleable iron and steel by using a mixture of the following materials ground,â42 Ih. oxide of man- ganese, Sib. plumbago, 141b. wood charccjal, and 21b. saltpetre. This mixture is thrown into the blast furnace either with the iron stone or fuel, with each charge of ore as will produce 4801b. of metal. It can also in a fine state be introduced into the puddHng furnace, when the pig iron is in fusion, by throwing a few pounds upon the surface every few minutes, thoroughly incorporating it by stirring it in the metal, until the G61b. are used, or until the metal begins to thicken ; it is then balled and sent to the tilt hammer and rollers, and passed through the usual process for making malleable iron. The same mixture may he used in the manufacture of cast steel from malleable iron made by the
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