Shawn's Timelime By shawn712 1590 Anton von Leeuenhoek invents the microscope 1642 William Seward Burroughts invents the adding machine 1794 Eli Whitney invents the cotton gin. 1839 Charles Goodyear invents vulcanized rubber. 1839 Samuel Morse invents the telegraph. 1852 Elisha Graves Otis invents the elevator break. 1858 Elijah McCoy invents the ironing board. 1887 Alexander Miles invents automatic elevator doors. 1903 Edwin Binney and Harold Smith invent Crayola Crayons. 1917 Whitcomb L. Judson invents the zipper1917 1927 John Logie Baird invents the television. 1928 Frank Henry Fleer invents bubble gum 1930 Richard Drew invents scotch tape. 1950 Madam C.J. Walker Invents African American Hair Care Products 1955 Jonas Salk invents a vaccine for polio.
