Frank haven hall biography samples

Frank Haven Hall (9 February 1841 – January 3, 1911)^[1] was an Americaninventor, author, academic administrator, and theoretical structuralist.^[2][3][4] He invented the first successful mechanical point writer and developed major functions of modern day typography with kerning^[5] and tracking.

His development of the Hall Braille Writer, in 1892, revolutionized Braille communication by dramatically speeding up the rate by which one could produce Braille characters.^[6] His research and development in the tactile writing system used by people who are blind or visually impaired, has been hailed as "the most innovative development of communications for the blind in the 19th century."^[7] His main research focused on specialized machines with differentiated keys, one for each dot in the Braille cell.^[8] He also created the stereo typewriter which produced copies faster and cheaper, derivative of inventions by Danish counterpart Rasmus Malling-Hansen, in