As disability theorists such as Douglas Baynton, Jonathan Rée, Lennard J. Davis, Jennifer Esmail, and Jan Branson and Don Miller explain, in both America and England in the mid-nineteenth century, attitudes toward sign language shifted: whereas in…
A conversation tube is a non-electric, acoustic device designed to amplify sounds for deaf or hard-of-hearing individuals and is constructed of a flexible tube with a mouthpiece at one end and an ear piece at the other. The device dates to the…
In 1846, B.F. Palmer filed the first patent for an artificial leg in the United States. His product, characterized by its smoothly articulated knee, ankle, and toe joints, as well as its elegant and lifelike appearance, was an immediate success. It…