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Screwfix Direct Limited, trading as Screwfix, is a retailer of trade tools, accessories and hardware products based in the United Kingdom. [6] Founded in 1979 as the Woodscrew Supply Company, the company was acquired in July 1999 by Kingfisher plc , which also owns B&Q , and is listed on the London Stock Exchange .
Masonry trowels are traditionally made of forged carbon steel, but some newer versions are made of cast stainless steel, which has longer wear and is rust-free. These include: Bricklayer's trowel has an elongated triangular-shaped flat metal blade, used by masons for leveling, spreading, and shaping cement, plaster, and mortar.
In 1967, Moore Drop Forging was acquired by Eastern Stainless Steel Corporation, a manufacturer of stainless and specialty steel. Easco continued the Craftsman contract with Sears . By 1969, the parent company was known as Easco Corporation. [ 1 ]
Notching is a metal-cutting process used on sheet-metal or thin bar-stock, sometimes on angle sections or tube. A shearing or punching process is used in a press, so as to cut vertically down and perpendicular to the surface, working from the edge of a work-piece.
Manufactured by the Marshalltown Company of Marshalltown, Iowa, the trowel was first introduced in the 1890s. [1] A patent filed for its handle by the company on July 12, 1927 was granted on December 23, 1930. [2] The Marshalltown trowel is made of a single piece of metal. The 5-inch and 6-inch pointing trowels are most often used for archaeology.
A WHS trowel. The WHS pointing trowel is prized amongst archaeologists in the United Kingdom who find its strength useful in digging heavy deposits. In his 1946 book Field Archaeology, Richard J. C. Atkinson (best known for excavating Stonehenge), "unequivocally" recommended the use of a trowel for archaeology; during the postwar era, WHS and a competing brand from Bowden were predominant.
For standardized testing of fracture toughness by the Charpy impact method, specimen and notch dimensions are most often taken from American standard ASTM E23, or British standard BS EN ISO 148-1:2009. For all notch types, a key parameter in governing stress concentration and failure in notched materials is the notch tip curvature or radius. [1]
Szczerbiec is a 98 cm-long (39 in) ceremonial sword bearing rich Gothic ornamentation, dated to the mid-13th century. [8] [9] It is classified as a type XII sword with a type I pommel and a type 6 crossguard according to the Oakeshott typology, [6] although the blade may have changed its shape due to centuries of corrosion and intensive cleaning before every coronation.