UNfound:

The Cayzergues braille typewriter was invented by M.A. Cayzergues of France, ca.1911. With its double carriage, it was both a typewriter that could type regular text on one of the carriages while simultaneously typing in braille on the other. (machine à écrire)

Have some info about this typewriter? Have you found it? If yes, please email me at Antikey.Chop@gmail.com