Turns out, the machine Arthur Morton thought was Henry Mill’s typewriter is John Cooper’s 1856 invention (see previous post here). The image Morton provided The Phonetic Journal in 1899 appears to be nothing more than a crude rendering of Cooper’s patent image (U.S. 14,907):
Describing Cooper’s invention in The Writing Machine, Michael Adler wrote, “Cooper’s machine was most noteworthy for its sophisticated combination of cylindrical platen and feed roller, very like that in modern typewriters” (p. 99). Typewriter Topics (1924) described it as “being a large device” and period illustrations falsely portray it as massive:
Compared to the photograph at the top of this post (a specimen held by the Smithsonian), the illustration above grossly exaggerates its size (image source). According to the Smithsonian, its dimensions are 6 1/4 in x 9 in x 7 1/2 in; 15.875 cm x 22.86 cm x 19.05 cm, though patent models were typically smaller versions of the actual product.
A different specimen can be found at the Antikey Chop here.
How Morton concluded the Cooper machine was Mill’s is unclear. He may have been relying on a misinformed source.
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