US914633A - Steel. - Google Patents

Description

which I have NiTE STATES PATENT BEIGE.

HENRY D. BOOTH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE MIDVALE STEEL COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

STEEL.

110,914,633. Specification of Letters Patent. Patented March 9, 1909. Application flled June 20, 1908. Serial No. 489,477. To all whom it may concern." a Carbon 1433 per centum Be it known that I, HENRY D. BOOTH, a Phosphorus .057 citizen of the United States, residing at Phila Manganese 1.22 delphia, county of Philadelphia, and State of ilicon .259 Pennsylvania, have'invented a new and use- Sulfur .038 ful mprovement in Steel, of which the fol- Copper .72 lowing is a full, clear, and exact description. Vanadium .30

Heretofore it has been attempted to use copper in a steel mixture, for the purpose of Having now fully described my invention, increasing the physical properties of the steel. what I claim and desire to protect by Letters 40 However, the use of co er has been accom- :Patent is anied with considerab e troubles and de- 1. The method-of improving steel, which ects, such, for instance, as the tendency, if consists in addin thereto a small amount of sufficient copper be added to produce a notcopper and vana ium. able result, to have so large an amount of cop- 2. A steel containing a small amount of 1per as to produce red-shortness and also to copper and vanadium. ave some of the 00 per not properly alloyed 3. The method of improving steel, which and remainin in t e mixture in its origlnal consists in adding thereto from 1/2 to '1 1/2 condition. I ave discovered that iftoasteel I per cent. of 00 per and from 1/10 to 6/10 per rnlxture containing copper in quantity safely cent. of vanadium.

insufficient to produce red-shortness and to d its appreciable separation in the ultimatesteel,say from 1/2to1 1/2 ercent.,Iadda very small quantity of vana ium,-say from 0 per cent. I can produce an efiicient result without any of the deleterious efl'ects which would arise if I attempted to produce such result without the addition of I vanadium. As an exam le of the steel made, the fol owing is given: I;

4. A steel containin from 1/2 to 1 1/2 per cent. of copper and iromi/IO to 6/10 per cent. of vanadium.

In testimony of which invention, I have hereunto set' my hand this 17th day of June, 1908.

. HENRY D. BOOTH. Witnesses:

JOHN BROWN MOKEE, HENRY D. Boo'rH, Jr.

, at Philadelphia, on