Eli Whitney (1765-1825) 。 Eli Whitney was an American inventor best known for inventing the cotton gin.This was one of the key inventions of the Industrial Revolution and shaped the economy of the American South.(right:first cotton gin)
Eli Whitney (1765-1825) • Eli Whitney was an American inventor best known for inventing the cotton gin. This was one of the key inventions of the Industrial Revolution and shaped the economy of the American South. (right: first cotton gin)
John H.Hall (1781-1841) ·John H.Hall was an inventor and entrepreneur. He was the director of the Rifle Works at the Harpers Ferry Armory.Hall developed and improved his system of manufacture, and his system was soon deployed in the manufacture of newly invented mass consumption items,such as sewing machines,typewriters,and bicycles.(right:The Harpers Ferry Armory)
John H. Hall (1781–1841) • John H. Hall was an inventor and entrepreneur. He was the director of the Rifle Works at the Harpers Ferry Armory. Hall developed and improved his system of manufacture, and his system was soon deployed in the manufacture of newly invented mass consumption items, such as sewing machines, typewriters, and bicycles. (right: The Harpers Ferry Armory)
The Stevens Family and Transportation The father John Stevens and his sons made numerous contributions of the building of steamboats,and his two sons, Robert Livingston Stevens and Edwin Augustus,made long distance railroading.Their contributions were mainly concerned with the essential problem of railroad tracks,the size and speed of trains. Without such gradual development of the technology,the long distance, many carriage freight trains would not have been feasible
The Stevens Family and Transportation • The father John Stevens and his sons made numerous contributions of the building of steamboats, and his two sons, Robert Livingston Stevens and Edwin Augustus, made long distance railroading. Their contributions were mainly concerned with the essential problem of railroad tracks, the size and speed of trains. Without such gradual development of the technology, the long distance, many carriage freight trains would not have been feasible
Samuel F.B.Morse(1791-1872) Morse contributed to the invention of a single-wire telegraph system based on European telegraphs.He was a co-developer of the Morse code,and helped to develop the commercial use of telegraphy.(right: original Samuel Morse telegraph)
Samuel F. B. Morse (1791 –1872) • Morse contributed to the invention of a single-wire telegraph system based on European telegraphs. He was a co-developer of the Morse code, and helped to develop the commercial use of telegraphy. (right: original Samuel Morse telegraph)
Alexander Graham Bell (1847-1922) ·Alexander Graham Bell was an eminent scientist, inventor,engineer and innovator who is credited with inventing the first practical telephone. (right:Bell at the opening of the long- distance line from New York to Chicago in1892.)
Alexander Graham Bell (1847 –1922) • Alexander Graham Bell was an eminent scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone. (right: Bell at the opening of the longdistance line from New York to Chicago in 1892.)