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Progressive die use in the United States during the first half of the twentieth century appears to be limited primarily to large companies producing products in very high quantity, such as electric motor components. It does, however, mention “follow-on” tooling and “successive gang cutting,” which are described in a manner that suggests they could be early predecessors to the progressive die. Oberlin Smith’s treatise, The Press Working of Metals” (Wiley and Sons, 1896) provides a good likeness of the first die maker that we may ever find but it makes no mention of a progressive die. The earliest published record describing a “progressive die” that I could find is in J.L. DeVere of France for “Dies for Punching and Drawing Sheet Metal,” perhaps the first of its kind.Ī significant advancement in metal stamping operations was the emergence of the progressive stamping die. The first record of punches and dies used in a machine having guides (or ways) to ensure punch-to-die alignment, is the fifteenth century, when a German locksmith used them to manufacture hinges. The coin blank was placed between the two die halves and then the upper die was struck with a heavy hammer rendering a positive image on the blank. Even today people occasionally speak of coins being “struck.” But these artifacts do not show that the use of punches and dies was equally well known.Įventually coins were made using two (2) dies - a lower die depicting the coin in a negative form, and a similar upper die. (ref: J.L Lewis, Journal of Commerce, 1897). Old coins show that the art of die sinking - a process to create a specific size or shape cavity or opening for casting or forging - was known to the ancient Greeks at least back to 800 B.C. Objects made out of metals were necessary for industry, farming, jewelry making and defense purposes. As more and more items and tools began to be made out of metals, more people were needed who were skilled in the craft of metalworking.
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Metalworkers were considered very valuable members of early societies. This practice is commonly referred to as metalworking. Eventually, the art of extracting and smelting metals and forming them into usable objects evolved.
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After fire was discovered, humans soon learned that adding heat to certain rocks (ores) would free the metal from the rock. Prior to the discovery of metal, people used simple hand tools crafted from bone, rock and wood.