1992.15

Aluminum pocket slate

Aluminum slate; piano hinge with hand crimped curls on short side; four lines of 31 cells; four steel pins up. curved curout in end of upper frame; cells are same size as APH slates (.09 x .25"), but are closer together horizontally and vertically, 1/16" between columns, 3/32" between rows; stamped "MFG. BY/HARRISON & SEIFRED/CHICAGO, U.S.A."

H-1.5 W-7.75 D-0.25 inches

ca. 1900

Harrison and Seifreid

Chicago, IL

The Hall Braille Writer was originally manufactured in 1892 by the Munson Typewriter Company in Chicago, overseen by Superintendent T.B. Harrison and designer Samuel J. Seifreid. Harrison and Seifried soon left Munson and began manufacturing the braillewriter full time, along with the Hall Stereotyper, a line of braille and New York Point slates, and other machinery. When the partnership dissolved, Samuel Seifried continued the business until his death in 1912. Eventually the slate making equipment of H&S and its successor, Cooper Manufacturing, were purchased by APH in 1924.