ABSTRACT
A firm established by Charles Brush to manufacture his piezoelectric cartridges. In 1937 the company produced the Soundmirror-a commercially available magnetic recorder using endless loop steel tape. During World War II Brush made wire recorders for the government; one type was a cassette wire recorder. The firm’s director was Semi Joseph Begun, a one-time researcher with Lorenz in Germany. In its current manifestation, as Brush Magnetic Heads Division of the Forgflo Corp, Sunbury, Pennsylvania, the company continues to make audio-video components, especially recording heads.
