US399611A - Manufacture of iron - Google Patents

Manufacture of iron Download PDF


Publication number
US399611A US399611DA US399611A US 399611 A US399611 A US 399611A US 399611D A US399611D A US 399611DA US 399611 A US399611 A US 399611A
Grant status
Patent type
Prior art keywords
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Grant date




    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium





SPECIFICATION forming part of Letters Patent No. 399,611, dated March 12, 1889.

Application filed September 27, 1888. Serial No. 286,632. (No specimens.)

To all whmn it may concern.-

Be it known that I, ABRAHAM T. HAY, a citizen of the United States, residing at Burlington, in the county of Des Moines and State of Iowa, have invented certain new and useful Improvements in the Manufacture of Iron; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention is directed to the manufacture of iron, which is to be used under eond'itions which subject it to a considerable degree of heat.

\Vith changes of temperature the strength of iron varies; and it is the object of my invention, by regulating the composition of the iron, to secure a product which will be strong under all conditions, but particularly when raised in temperature, provided, of course, that a certain limit is not exceeded. Such an iron is especially desirable for fine boilerplates and axles. Certain metals, when combined in a very small quantity (sometimes a mere trace) with iron, and which change their polarity relative to the iron with a certain increase of temperature, have the effectof materially increasing the strength of the iron at such higher temperature. These metals I term pyro-electric, and among them may be enumerated nickel, cobalt, and copper.

My invention consists in a ferruginous alkaline sponge containing iron, an alkali, and one or more of the relatively pyro-elect-rical metals, and adapted. to be combined with the crude iron which is to be manufactured into the desired shapes.

In order to make my invention clearly understood I will proceed to describe, by way of example, a practical means for carrying the same into eifect.

By means of a suitable retort or furnace such, for example, as that described in my patent, No. 390,945, dated October 9, 188SI produce a ferruginous alkaline sponge containing iron, calcium, potassium, aluminium, and nickel.

To produce the sponge, I charge the fur nace with a suitable stock, such the following: Iron oxidesuch as Pilot Knob ore, of .llissouri-by weight, eighty-tl'iree (83) parts; limestone, nine parts; crude potash, one and one-tenth (1.1) part; aluminous substance, as commercial alumina, C(Hflll'ldlllll,

scrap brick or shale, or several of such substances, five and five-tenths (5.5) parts, and nickel, in an oxide, one and four-tenths (1.4:) part. This stock is fused with a suitable fuelsueh as coke and, having been drawn oil, forms the said semi-metallic sponge.

\Vith regard to the proportions of the substances employed in the production of the sponge, I would remark that the relative quantities given above need not be rigidly adhered to. On the contrary, for the best results and greatest economy, said proportions should be governed by the requirements arising from the composition of the crude-iron stock and from the particular uses to which the product is to be applied. I therefore do not confine myinvention to all of the particular substances and proportions given in the above example.

I prefer to use the sponge by adding a suitable proportion-say from one to three and one-half per cent. in broken pieces-to the iron in the puddling or knobbling furnace at the time when the iron is in a liquid state.

To still further increase the described quality of this iron product, I prefcr to add to the sponge a trace of cobalt, which may conveniently and will generally be done by using an oxide of nickel which is combined with a cobalt oxide. A trace of copper also has a material effect in imparting the said quality to the iron product, and I prefer to add this ele ment also to the sponge.

Iron per se is the same in all of the most celebrated as well as in the ordinary brands, the more valuable qualities of the former brands being due to the other metals with which the iron is combined or alloyed. By my invention I am enabled with the more ordinary and, as at present considered, less valuable brands to closely approach or equal the results obtained from the use of the most valuable and celebrated irons.

Having thus described my invention, what I claim is A ferruginous sponge containing iron, an alkali, and a metal isomorphous with iron and thermoelectric relative thereto, substantially as set forth.

In testimony whereof I affix my signature in the presence of two witnesses.




US399611A Manufacture of iron Expired - Lifetime US399611A (en)

Publications (1)

Publication Number Publication Date
US399611A true US399611A (en) 1889-03-12



Family Applications (1)

Application Number Title Priority Date Filing Date
US399611A Expired - Lifetime US399611A (en) Manufacture of iron

Country Status (1)

Country Link
US (1) US399611A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020131391A1 (en) * 1996-11-07 2002-09-19 Interdigital Technology Corporation Subscriber unit for compressing and transmitting high speed data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020131391A1 (en) * 1996-11-07 2002-09-19 Interdigital Technology Corporation Subscriber unit for compressing and transmitting high speed data

Similar Documents

Publication Publication Date Title
US1254987A (en) Alloy.
US2430419A (en) Welding rod
US1268533A (en) Aluminous abrasive.
US2580171A (en) Heat-resistant ferritic alloy
US1373038A (en) Process of producing metal substances
US2238382A (en) Formation of ferrous metal powders and formation of articles by sintering
US2445296A (en) Process of manufacturing resistance elements durable at high temperature and proof against chemical action
US2412373A (en) Electrical resistance elements durable at high temperatures and proof against chemical action, and process of making same
US1945297A (en) Aluminum alloy
US2337314A (en) Aluminothermic method and articles of manufacture
US2480475A (en) Refractory
US2418026A (en) Refractory fused forsterite
US2282124A (en) Production of iron from iron oxide
US2026683A (en) Treating ferriferous ores
US2726152A (en) Addition agent and method for treating cast iron
US3208885A (en) Apparatus for nitriding of metals
US2395029A (en) Method of reducing iron ores
US1979729A (en) Production of sponge iron
US3938987A (en) Process for preparing a smelter furnace charge composition
US2985532A (en) Electrical contacts
US2473019A (en) Production of ferrochromium
US3782930A (en) Graphite-containing ferrous-titanium carbide composition
US2523138A (en) Recovery of iron from its ores
US2871115A (en) Method of preparing self-fluxing synthetic iron scrap
US768551A (en) Manufacture of iron and steel and their alloys.