This appears to be the first version of the Sholes Visible typewriter so it may just have been a prototype. It was invented ca.1891 by Christopher Latham Sholes and made by the C. Latham Sholes Typewriter Mfg. Co. of Wisconsin. Note the placement of the ribbon spools under the exposed typebars.
Have some info about this typewriter? Have you found it? If yes, please email me at Antikey.Chop@gmail.com