This is - a very rare and almost incredible find. Very few people had this almost unknown musical typewriter Keaton Music. According to the news CBS CBS, "aware of the existence of 10 - 12 copies made.ยป
Typewriter Keaton Music was first patented in 1936 (14 keys) Robert H. Keaton from San Francisco, California. Another patent was issued in 1953 (33 key), which included the improvement of the machine. The machine prints on a piece of paper lying flat under the printing mechanism. There are several music typewriters Keaton, who is supposed to still remain in museums and private collections. The car in the picture was sold in the 1950s for about $ 225. Typewriter facilitated publishers, educators and musicians, creating a musical copies of records required in large quantities. Composers, however, prefer to compose music manually.
Source: ibigdan.livejournal.com