Chorded keyboard (a writing system for the blind) uses either 6 or 8 tactile 'points' from which all letters and numbers are formed. When Louis Braille invented it, it was produced with a needle holing successively all needed points in a cardboard sheet. In 1892, Frank Haven Hall, superintendent of the Illinois Institute for the Education of the Blind, created the Hall Braille Writer, which was like a typewriter with 6 keys, one for each dot in a braille cell. The Perkins Brailler, first manufactured in 1951, uses a 6-key chord keyboard (plus a spacebar) to produce braille output, and has been
William Bell Wait developed a printing press which used a breakthrough process which allowed for embossing on dual sides of a book page. He also formulated more economic and durable methods of book binding, reducing the long-term costs of printing. William B. Wait founded the following organizations: William B. Wait wrote the following books: William Bell Wait William Bell Wait (1839–1916) was a teacher in the New York Institute for the Education of the Blind who invented New York Point, a system of writing for the blind that was adopted widely in the United States before the Braille system was universally adopted there.