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Royal Model KMM Typewriter - circa 1940 - $120 (Marcellus)
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The Royal Typewriter Company manufactured this Royal Magic Margin typewriter around 1940. The typewriter’s patented Magic Margin design allowed the typist to set both the left and right-hand margins with a simple push of a lever. With easy margin-switching, the Royal KMM could easily address envelopes, tabulate figures, and create tables.
The Royal Typewriter Company was founded in 1906 by Thomas Fortunes Ryan and Edward B. Hess, with Ryan providing the capital and Hess providing the inventiveness. Hess owned over 150 patents, many of which were assigned to the Royal Typewriter Company. Hess’s most noteworthy patents related to increasing the ease of typing, including an accelerating typebar, anti-friction roller escapement, Magic Margins, and selective touch control.
Date Made: 1940
Maker: Royal Typewriter Company
Line: Royal Typewriter Co., Inc.
Data Source: National Museum of American History
ID Number: ME.311904
Accession Number:156624
Catalog Number: 311904
Physical Description: metal (overall material)
Measurements: overall: 9 in x 10 in x 14 1/2 in; 22.86 cm x 25.4 cm x 36.83 cm