Ch. 11 HW Assignments 11-10

Ch. 11 HW Assignments 11-10 - Trevor Grabhorn 11-3-10...

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Trevor Grabhorn 11-3-10 Period 2 Ch. 11 Identifications John Deere's steel-tipped plow- was an American blacksmith and manufacturer who founded Deere & Company, one of the largest and leading agricultural and construction equipment manufacturers in the world. Born in Rutland, Vermont, Deere moved to Illinois and invented the first commercially successful steel plow in 1837. Cyrus McCormick's mechanical reaper- The first reapers cut the standing grain and, with a revolving reel, swept it onto a platform from which it was raked off into piles by a man walking alongside. It could harvest more grain than five men using the earlier cradles. The next innovation, patented in 1858, was a self-raking reaper with an endless canvas belt that delivered the cut grain to two men who riding on the end of the platform, bundled it. Meanwhile, Cyrus McCormick had moved to Chicago, built a reaper factory, and founded what eventually became the International Harvester Company. In 1872 he produced a reaper which automatically bound the bundles with wire. Samuel F. B. Morse- was an American contributor to the invention of a single-wire telegraph system based on European telegraphs, co-inventor of the Morse code, and an accomplished painter. American system of manufacturing- was a set of manufacturing methods that evolved in the 19th century. It involved semi-skilled labor using machine tools and jigs to make standardized, identical, interchangeable parts, manufactured to a tolerance, which could be assembled with a minimum of time and skill, requiring little to no fitting. The system is also known as armory practice because of the history of its development by the United States Department of War in the Springfield and Harpers Ferry armories (and their inside and outside gun-making contractors). The name "American system" came not from any aspect of the system that is unique to the American national character, but simply from the fact that for a time in the 19th century it was strongly associated with the American companies who first successfully implemented it, and how their methods contrasted (at that time) with those of British and continental European companies. Within a few decades, manufacturing technology had evolved further, and the ideas behind the "American" system were in use worldwide. Interchangeable parts- are parts that are for practical purposes identical. They are made to specifications that ensure that they are so nearly identical that they will fit into any device of the same type. One such part can freely replace another, without any custom fitting (such as filing). This interchangeability allows easy assembly of new devices, and easier repair of existing devices, while minimizing both the time and skill required of the person doing the assembly or repair. Catharine Beecher, a Treatise on Domestic Economy-
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This note was uploaded on 07/29/2011 for the course ECON 101 taught by Professor Smith during the Spring '10 term at Baltimore City.

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Ch. 11 HW Assignments 11-10 - Trevor Grabhorn 11-3-10...

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