Edward Cowper (1790-1852) shown with a model of his four cylinder printing pres. Cowper patented a wallpaper-printing machine in 1816. Two years later he patented a proces for printing on to both sides of a piece of paper simultaneously. In 1827 he also invented, jointly with Augustus Applegarth, the four-cylinder pres for newsprint.
© Science Museum / Science & Society Picture Library