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Boston: Typewriter Serial Number Age List

Serial Number Table Last Edited: 08/1/16 01:17
NOTE: dates shown are JAN 1 unless noted, so the serial number shown is the *first* serial number produced the given year. Exceptions are serial numbers preceded by "up to"(where you can assume that the numbers reported in that subsection are DECEMBER 31, END OF YEAR NUMBERS) or rows where a month is given in the month column. If the serial number is shown as a range (xxxx-xxxx) it indicates that we know the entire range of serial numbers for the given year.

Models and s/n Y M D Remarks Ref.
  1886-1889 Patents:
US342302
Issued May 18, 1886
US396686
Filed Dec 5, 1887 • Issued Jan 22, 1889
US410266
Issued Sep 3, 1889
Patented in 1886 by Daniel Edgar Kempster of Boston, Mass., USA assisted by Willard Herbert Gilman.
In January 1889, improvements to Kempster's design were patented by Eugene Irvin Blount and James Henry Currier of Somerville, Mass., USA.
Finally, in September 1889, Kempster, Blount, Currier and Benjamin Dore, of Lynn, Massachusetts, jointly patented the produced version.
The so-called "one-finger typewriter" designed by Frederic Webster Howe in 1891 was directly based on the Boston.
This machine should not be confused with the much simpler Boston index typewriter sold in Europe by World.
90
1888 Index machine, select letters using a knob passing over an arc-shaped index. Printing by typewheel. Machine is nearly 2 feet wide, and looks deceptively small in photos. 1,5
Platen Diameter       unknown  
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