USRE6558E - Assxg-zxob - Google Patents

Description

HIAZLABLL:

UNITED STATES 'DF GEE-HALF IiNTEREfT PATENT OFFICE.

ro enonen W. Memes.

' IMPRQVEMENT 5N comeosiri'osmsrms Foe .cAs'Tme shows.

Specification forming part of Letters Patent 1 3,539, dated Dotober 7, 1873; reissue No 6,558, dated Joly 1575.; application died OctoherIiO, 1874.

To all whom it concern Be itknown that .l, (inc-non K. SMlTH, of Waterloo, in the county of Black Hawk and state of Iowa, have invented an Improved @require to wear bright and smooth in order to work easily and my invention consists in making this composition metal by uniting together, in one homogeneous massof uniform hardness and texture throughout, cast-iron ruin eat" or wrought iron; 'by'hr'st meningcast-iron'that is to be used in making the composition metal, and pouring it upon a mass of Lin melted steel or wrought-iron broken into small pieces, that is also to be used in makinglthe composition, and then remelting this conglomerate mass, and casting it in any suit able molds or forms for use.

In using-cast-iron and steel, or cast-iron and steeland wrought-iron, T melt or fuse the cast-iron by itself, and take the steel, or the steel and -wrought-iron, as the case may he, and placefthem in a suitable receptable or bundle, to pour upon them the melted castiron, the cast-iron running-among and surrounding the-pieces of cold metal, making-a conglomerate mass as the cast-iron is cooled. In order that the commingling of the melted iron with the unmelted wrought-iron or. steel, or both, may be more complete, I ordinarily use the cold metal in scraps or "broken in small pieces. This commingling of the'melted-castiron with the unmelted metal clearly chills the cast-iron, and has such an effect upon itand the unmelted metal that in remelting it 'all melts together, and constitutes a homogeneous compound or composition metal of uniform and even texture throughout. Its hardness or quality depends largely upon the comparativequantity of the difi'erent kinds of metal used in making the compound, and thecomparati-ve quantity of the diflerent kinds of metal used depends upon the quality of the compound I desire, to make, itbeing deter-,1

mined by the use Idesire to-make of the com-' pound metal. To prepare metal for making plows, &e., I prefer to take thirty pounds of steel and thirty pounds of wroi'rght-irou. to about thirty-six pounds of ordinary cast-iron.

The. wrought-iron and steel is gathered:

pounds of black oxide of'mang'anese in each hundred pounds of the compound, which; is placed among. the steel and ;iron scraps. In this way wrought-iron andsteel, or either of them, can .be melted in a'cupola with castiron, and when cast make a very fine-grained iron casting, exceedingly hard and durable, and capable of receiving a veryhighpolish. Heretofore it has not been practicable tomelt making my" composition-mieta1;"about *four and commingle these diiferent metals. in a cupola, as they melt at different degrees'ijf heat,'and could not'be made to cominingle and unite and form a homogeneous compound or mixture. I use the manganese to use up the excess of carbon, The composition made in proportions above described can be annealed,.so as to. be drilled and worked'und'er the hammer the same as ordinary-malleable iron. When used for plow-points they can be sharpened the same as when made of steel, and can be hardened by the same process. It is a well-known fact that'the soil initho different sections of the {country produce diflerent efl'ects upon the. implements and toolggused for plowing and cultivating. In some sec tions of the country. csstriron plows1';=will scour and wear bright and smooth; "hut in the western prairie-soil a cast-iron plow is virtuallya failure, and steel .which are very expensive, as they have to be p The'plows made and plows have been .3863} wrought into shape. cast from the composition as ebovedescribed have proved a success in every way, and can of my invention is not to save any filings,

, of the metal.

able to melt thefine particles of cast-iron with I take metal that is broken into distinctive pieces of :sufficient size to create a chill, andat the same e X f? V p.555

be furnished at a cost but little above the ordinary cast-iron plows.

I am aware that it is not new to save cast-iron turnings, borings, and filings which 'are produced in an ordinary machine-shop. They 'h ave been utilized by ponrin g upon them melted iron, and then the mass remelted. The object 8m. butto 'make a new kind of metal.

The object of'ponring molten cast-iron upon east-iron filings and borings or tnrnmgs was to effect in and by the blast or smelting t furnace the melting and utilization of small masses of waste iron produced in the reduc-' tion of cast-iron by tools. vThe object of my invention is to-produce a new metal by uniting, as above described, diiferent kinds of metal. Pouring cast-iron in a molten state upon cast-iron does not change the'character Jjhe only result sought-is to be cast-iron in a blast-furnace.

time leave sufficient space between"'the pieces,

when'packed together, to allow'the melted iron to flow in a considerable body between These pieces should not be less the pieces. than one-half an inch in thickness. The effect of pouring the molten cast-iron upon the mass of pieces of wrought-iron or steeLis to produce a complete and perfect commingling of the different kinds of metal when the conglomerate is remelted,as above specified. My new metal is of a uniform quality and character throughout.

I claim- 1. The process of making a metal by, first making a conglomerate by pouring melted cast-iron upon a pieces of unmelted iron or steel of snliicient size to make a chill, and then remelting the conglomerate, as specified.

2. A composition metal consisting of steel, wrought-iron, cast-iron, and black oiride of manganese, substantiallyas specified. V V GEORGE K. SMITH, Witnesses: r 1

' JNo. E. RANDALL,

J AMES' HOPKINS.

composition mass of