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Captioned "Steel", caricature of Bessemer by Leslie Ward in Vanity Fair, 6 November 1880 Bessemer was a prolific inventor and held at least 129 patents, spanning from 1838 to 1883. These included military ordnance, movable dies for embossed postage stamps, a screw extruder to extract sugar from sugar cane, and others in the fields of iron ...
Brodie's Steel Helmet, Type B: with the shell made from Hadfield (manganese) steel. Helmet, Steel, Mark I: introduced in Spring, 1916, a modified version of the Brodie helmet with a wholly redesigned liner and a mild steel rim to the shell. In 1917, a rubber ring or "doughnut" was added between the liner and the top of the shell, and in 1935 ...
Bessemer process. The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace. The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature ...
A kettle hat, also known as a war hat, was a type of combat helmet made of iron or steel in the shape of a brimmed hat. There were many design variations, with the common element being a wide brim that afforded extra protection to the wearer. It gained its common English language name from its resemblance to a metal cooking pot (the original ...
Steelmaking. Steelmaking is the process of producing steel from iron ore and/or scrap. In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur, and excess carbon (the most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon, and vanadium are added to produce ...
Pork pie hat. Shovel hat. Sidara – national Iraqi headgear. Shtreimel. Sombrero. Spodik. Keffiyah or sudra. Papal tiara – a hat traditionally worn by the Pope, which has been abandoned in recent decades, in favor of the mitre. Top hat, also stovepipe hat, chimney pot hat, lum hat, or (in collapsible form) gibus.
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