572
THE NEW ZEALAND GAZETTE.
[No. 21

suitable relation to the floor thereof, and an interior extension or recess in the side of the structure, constituting a crucible or converter having tuyères and blowing apparatus; the structure being so made and mounted as to be capable of being tilted or rocked axially to raise the converter, then at the bottom of the structure, to flow its contents into the open-hearth furnace, which by such rocking action becomes the bottom of the structure. (6.) A hollow structure, one portion of the interior of which constitutes the floor of an open-hearth furnace, open-hearth burners arranged at the ends of the structure in suitable relation to such floor, a projecting crucible or converter opening into the hollow structure and mounted thereon at one side of the floor of the open-hearth furnace, and an opening k in the wall of the structure on the other side of the structure; the structure being so mounted as to be capable of being rocked to discharge the contents of the converter upon the floor of the furnace. (7.) A hollow structure, one portion of the interior of which constitutes the floor of an open-hearth furnace, open-hearth burners arranged at the ends of the structure in suitable relation to such floor, a projecting crucible or converter opening into the hollow structure, and mounted thereon at one side of the floor of the open-hearth furnace, and an opening k in the wall of the structure on the other side of the structure, and one or more openings j in the wall of the structure between the converter and the first-named opening, the structure being so mounted as to be capable of being rocked to discharge the contents of the converter upon the floor of the furnace. (8.) A hollow structure provided at its ends with burners, and a portion of the interior of which forms the floor of an ordinary open-hearth furnace arranged in suitable relation to the burners, a converter mounted upon the structure, forming part thereof, and opening thereinto at one side of the said floor, and of less width than the length of the structure, and a raised ledge as d surrounding the mouth of the converter, the structure being so made and mounted as to be capable of being rocked to run the contents of the converter upon the floor of the open-hearth furnace. (9.) A hollow structure provided at its ends with burners, and a portion of the interior of which forms the floor of an ordinary open-hearth furnace arranged in suitable relation to the burners, a converter mounted upon the structure, forming part thereof, and opening thereinto at one side of the said floor, and of less width than the length of the structure, and a raised ledge as d surrounding the mouth of the converter, and having ducts or passages in it through which any fluid material escaping from the converter may return thereto, the structure being so made and mounted as to be capable of being rocked to run the contents of the converter upon the floor of the open-hearth furnace. (10.) The combination of a hollow structure, a portion of the interior of which forms the floor of an open-hearth furnace, and which is provided with proper burners at its ends in suitable relation to such floor, of a converter, attached to the side of the structure, opening thereinto, and provided with a system of tuyères and blowers of the general character described, and operating in the manner set forth, the structure being so made and mounted as to be capable of being rocked to discharge the contents of the converter upon the floor of the furnace. (11.) An open-hearth furnace and a converter comprising portions of the same structure, and whose interior surfaces are part of the interior space of said structure, of a system of tuyères and blowers, such as described, substantially as and for the purpose set forth. (12.) The described improvement in the art of manufacturing steel which consists in so associating an open-hearth furnace and a converter that the heat from the operation of either of them is conserved in the enclosed space common to both of them, and the available temperature of one operation utilised in the other, substantially as set forth. (13.) The described improvement in the art of manufacturing steel which consists in so associating an open-hearth furnace and a converter that the heat from the operation of the converter is conserved in the enclosed space common to both of them, heating the material to be added to the bath in the open-hearth operation while such material is disposed in said common space, and, after the completion of the operation in the converter, transferring the bath therein and the material so heated to the floor of the open-hearth furnace. 14.) The improvements in the process of manufacturing steel from pig-metal which consists in treating successively, in two distinct, separate, and independent operations, any kind of pig-metal, high or low in silicon, sulphur, phosphorus, and carbon, with or without the addition of ores, scrap, lime, or the like, according to circumstances, by the two methods known under the generic names of the converter and open-hearth processes, carrying on the operation in two vessels entirely distinct from and independent of each other as regards their mode of action and of working, though contained in the same apparatus, each vessel, in fact, working in the exact conditions of the class of apparatus to which it belongs, but at the same time so connected with the other,

and contained in the same apparatus or furnace, that the surplus heat of each of these distinct operations can be made available for specific purposes of carrying on the other. (15.) A rotary furnace of the character set forth, fitted with a converter specially for the decarburization and desiliconization of iron, the possibility of replacing this converter, the lining of which is worn out quicker than the lining of the furnace, without stopping the furnace; also the possibility of replacing the ends of the gas and air passages or burners f, g, without stopping the furnace. (16.) In a rotary furnace of the character set forth, the disposition shown in Fig. 10, which allows, when phosphoric iron is treated alone or with a small proportion of scrap, of the lime or other material being treated by the gases emitted during the decarburization, and the location of the lime, being such that when the furnace is tilted in position of Figs. 7 and 8 it does not fall on the middle of the bath, but towards each end, thus allowing the evacuation of a great portion of the siliceous slag before the floating lime gets mixed with all the slag and comes near to opening k, thus saving a quantity of lime, and accelerating the operation of dephosphorization. (17.) In a rotary furnace of the character described, the utilisation of a portion of the temperature developed during the decarburization of the iron for the heating of scrap, lime for dephosphorization, or other materials generally added to the charge, thus allowing, after decarburization, of the introduction into the charge of the materials previously heated in the furnace itself. (18.) In a rotary furnace of the character described, the disposition, form, and shape of the furnace, allowing to place the scrap, lime, and other materials in proximity to the crucible or converter where the decarburization is effected; these materials being charged in a heap, protecting the ends of the furnace where the passages f, g, come in, and preventing their obstruction with slag and metal in case of an abnormal operation of blowing.

(Specification, £1; drawings, £1 1s.)

No. 12431.—1st March, 1900.—KARL MILLER, of 291, Burdett Road, Bow, London, England, Metallurgical Chemist. An improved process for rendering ore friable.

Claims.—(1.) In a process for the disintegration of ores by chilling them when red-hot in a liquid bath, the employment of a chemical or chemicals in the said bath adapted to readily evolve free gases by or during contact of the red-hot ore therewith, to thoroughly permeate the said ore and widen fissures therein, and thus to render it easily friable, substantially as described. (2.) In a process for the disintegration of ores by chilling them when red-hot in a liquid bath, the composition of the said bath consisting of a solution of soda and caustic soda in about equal quantities to a density of 15° Beaumé, with about 1⅓ per cent. of peroxide of hydrogen or peroxide of sodium added thereto immediately before the introduction of the red-hot ore, substantially as described. (3.) In a process for the disintegration of ores by chilling them when red-hot in a liquid bath, the composition of the said bath, consisting of a solution of soda and caustic soda in about equal quantities to a density of 15° Beaumé, and about 5 per cent. of permanganate of potash added thereto immediately before the introduction of the red-hot ore, substantially as described.

(Specification, 2s. 9d.)

No. 12435.—3rd March, 1900.—MASSEY-HARRIS COMPANY, LIMITED, of 915, King Street West, Toronto, Ontario, Canada, Manufacturers (assignees of Lyman Melvin Jones, Charles McLeod, and Frederick Duncan Mercer, of 915, King Street West, Toronto aforesaid, Manufacturers). Improvements in self-binding harvesters.

Claims.—(1.) In a self-binding harvester, an outside divider hinged at a point intermediate of the length between the cutter-bar and back sill of the grain-table or platform, as and for the purpose specified. (2.) In a self-binding harvester, an outside divider hinged at a point intermediate of the length between the cutter-bar and back sill of the grain-table or platform, and a holding-brace secured to the divider, and means for securing the free end of the brace in position, as and for the purpose specified. (3.) In a self-binding harvester, an outside divider hinged at a point intermediate of the length between the cutter-bar and back sill of the grain-table or platform, a holding-brace secured to the divider, and a latch bolt for holding the free end of the holding-brace in position, as and for the purpose specified. (4.) The combination with the lower side-bar of the grain-table and the upper side-bar attached to or forming part of same, and suitably secured thereto at the front and the rear, of the divider comprising the board, the upright, and the converging-bars secured to the upright and at the apex of the divider to the board, and hinged at the rear to the upper