USRE11660E - Francis alpha cotiiias - Google Patents

Description

UNITED STATES PATENT. OFFICE.

ALLQY,

SPECIFICATION forming part of Reissues! Letters Patent No. 'i 1.660, dated April 19, 1898.

Driginal No, 588,094, dated Julylfi, 1897. Application for reissue filed January 11, 1898, Serial No. 666,375. Patented in France June 2,18%,150. 256,852; in Belgium June 30, 1896,1l'm122fi23; in England Jun 30,1896, No. 14,479; in Austria July 31, 1898, lie. iii/$4M; in Italy July 31, 1896, No. 42,221 in Lnzemburg July 31,1896,Nc. 2,582, and

in Spain July 31,18 96,N0-19,417.

T 0 (L whom it may concern;

' a citizen of the Republic of France, residing process of making the same;

considerable tensile strength. its resisting at 9 Rue Victor Hugo, Ivry hort, Seine, in the Republic of .l rance, haveinvented certain new and usc ul ln'iprovements in Alloys,'o'i' which the following is a full, clear, and erect specification. i

The invention has been patented in France, No. 256,852, dated June 2, 1896; in Belgium, No. 122,223,.dat'ed June 30, 1896; inAustria, N0. iii/8,442. dated July 31, 1896; in Italy, No. 453,221., dated July 31, 1896'; in Luxemburg, No. 2,582, dated July Si, 18%; in England, No. 14,479, dated June 30, 1896,, end in, Spain, No. 19,412", dated July 31, 1896, 4

The invention forming the subject oithis application relates to a new metallic alloy-and This alloy has force is as high as thirty-five kilograms per square millimeter of section.

It consists of a mixture ingiven proportions of copper, tin, zinc, and aluminium, to which I add chlorid of ammonia and phosphorusin the state oi salt,

The composition of thisalloy is as follows: copper, eighty grams; tin, one hundred and ninety grains; zinc, five hundred grams, aluminium, two hundred and thirty grams; total, one thousandgrams. i An alloy in these proportions and prepared in themnuner hereinafter described, with additions of chlorid of ammonia and phosphides, is especially suitable for casting light pieces of machinery which must have copsiderable resisting force. It enables one to ootai'u pieces of this kind completely finished on leaving the mold.

For manufacturing this alloy I proceed in the following manner: I begin byputting into a crucible the requisite quantities of copper and tin and I let them melt together. In this way I obtain a first alloy of copper and tin, to which, after cooling, I add the necessary quantity of zinc. Then-I let the whole mass melt together once more. 'When the mass is It can he sol tiered and Worked with the greatest ease completely molten, I let it cool down until it becomes pasty. Itheu add the requisite proportions of aluminium, which immediately heightens the temperature of the mass, and, finally, l heat the mass to a very high temperatnre. The substances are thereby coinbincd in the most complete manner'and I obtain it perfectly homogeneous alloy.

in order to facilitate-the combination of the various elements and reduce the oxids that will form at every melting, I add during the lust manipulation about a kilogram of chlcrid of ammonia per one thousand kilograms of alloy. I add also during the last manipulation a small quantity of phosphorus in order to give-to the alloy an, easier flow and greater fluidity. This phosphorus can be used in the-state of salt. These salts are phosphidcs of titanium, manganese, Wolfram, tungsten, due, which further increase the hardness of the alloy. When the alloy is com; into in got-molds,

pletely melted, it is cast whereinit is left to cool To make perfectlysdrc that the composilast melting or during the remelting of the ingot performed after the first casting andthe taking of the samples. The alloy obtained in the way describedabove is fusible at atemperature below 800 centi'grade. Ibis sufficient to heat it in kettles in the, open air, exactly like lead or tin, and neither furnaces nor crucibles are required.

mold s.

I claim- 1. The alloy described consisting of copper,

. '9 This alloy molds itself perfectly in metal,

parts, zinc eighty parts, tin one hundred and ninety five hundred parts and aluminium two hundred and thirty parts.

2. The process described,consistin g in'meltin g together copper and tin and cooling, addin g' thereto zinc and then reinelting', allowing the mass to cool to a pasty composition, then adding aluminium and finally heating the mass to a high temperature, substantially as described. In witness whereof I have hereunto set my hand in presence of two witnesses.

FRANCIS ALPHA COTIIIAS. Witnesses:

ANDRE MESTIGH,

VICTOR PEMMETZ.