BESSEMER, Sir HENRY ( 1813-98 ). An Eng lish inventor, who originated and successfully developed the process for making steel known by his name. He was born at Charlton, nea• Hitchin, England, and acquired his early educa tion in the schools of the neighborhood. His father, who was a French artist, owned a type foundry, and in this establishment the son re ceived his early mechanical training. He in herited from his father artistic talent, and was skillful at modeling, designing, and painting. He early turned his attention to mechanical in ventions, and his first successful scheme was a method of impressing on deeds and other docu ments the stamps of the internal revenue office, which at that time could be forged readily. Of such marked excellence was this invention that it was straightway appropriated by the revenue office, without compensation to the inventor, in spite of his strenuous efforts to secure jus tice. Later in life, when he had achieved success and honor, he brought this matter to the atten tion of the Government. and was knighted (1879) as a tardy recognition. of the value of his early invention. Bessemer's next work of importance was that of a new method of pro ducing bronze powder, or `gold' paint, which was successful from a commercial point of view, and supplied him with resources to carry on his metallurgical researches. He was greatly inter ested in the production and manipulation of alloys, doubtless on account of his father's busi ness as a type-founder, and though without a. scientific training, he was a careful, ingenious, and determined investigator. During the Crime an War, in common with many other inventors, he was engaged in experiments looking to the iinprovement of cannon, and designed an elon gated projectile so shaped and perforated as to revolve in its flight through the passage of air and powder-gases. For the discharge of such a projectile he found that the cannon of that period would not resist the strain, and accord ingly he determined to carry on experiments with a view to producing iron of greater strength. Working in Paris, with the encourage ment of the Emperor Napoleon, he produced an improved form of cast iron, and was then led to further refine the iron until steel was produced. Patents were taken out in connection with these ideas in 1855, and the experiments were con tinued, so that Bessemer soon (in his own words) "became convinced that if air could be brought in contact with a sufficiently extensive surface of molten crude iron, the latter would rapidly be converted into malleable iron." As a result of numerous experiments followed the `converter' (q.v.), which, along with the other apparatus, was installed in 1856 at his bronze factory in London, and steel ingots were pro duced which were successfully rolled into rails without hammering. After the process was developed, the Bessemer Steel Works in Sheffield were erected, and were soon producing a large output, as well as training competent workmen to carry on similar factories in other parts of the world. On August 13, 1856, Bessemer read
a paper at the Cheltenham meeting of the Brit ish Association, on Manufacture of Mal leable Iron and Steel Without Fuel," and in 1865, at the Birmingham meeting, he read an other important paper "On the Manufaeture of Cast Steel, its Progress and Employment as a Substitute for Wrought Iron." The growth of this process (See IRON AND STEEL, METALLURGY OF) was not only marked in itself, hut it had a wide-spread effect in greatly cheapening., the price of steel and making it available for railway and other engineering. work. In 1858 the steel made at Sheffield, the principal producing centre of England, was less than 50,000 tons, produced by the process. Since that time the output has marvelously increased, and in 1896 Great Britain produced 1,815.842 tons of Iles semer-steel ingots and the United States 3,019, 906, the yearly output of the world being con side•rably in excess of 10,060.000 tons. Bes semer's process has in forty years undergone few, if any, radical improvements.
In addition to his success in steel-working, which brought him renown and fortune, Bes semer had other inventions to his credit, among which were a method for compressing into a solid block the graphite used in the manufac ture of lead-pencils. which is still in use: a method for easting type. using a force-pmnp to drive the metal into the mould ; a system of rollers for embossing and printing paper; a ma chine for embossing velvet; and a ship with a stationary cabin. The latter, on which Bessemer spent much money, was. however. a complete failure. in 185!) Bessemer received his first honor, in the form of the Telford Medal of the Institute of Civil Engineers; in 1872 the Albert Medal of the Society of Arts; in 1871-73 he was president of the Hon and Steel Institute of Great Britain; and in 1879 he was made a fel low of the Royal Society. That a man who did so much for British industrial development did not receive higher honors from the home Government was a source of deep regret to Eng lish engineers, who alluded to the fact that, in the United States, where the Bessemer process was largely used, eight cities or towns bore his name. He was an honorary member of many foreign engineering and scientific societies, including the American Society of Mechanical Engineers, before whom, in December, 1896, he presented a paper on "The Origin of the Bessemer Proc ess," which was printed in the Transactions of that society (Vol. XVII., New York, 1896), and also published in Engineering Yews (Vol. XXXII., New York) ; Engineering (Vol. LXII,, London), and other scientific journals of that time., to which the reader is referred.