by
George Langford, Sc.D.
Updated December 9, 2016
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| Davis Level & Tool Company |
E.E. Rose and R.D. Johnson are the
inventors referenced to the two patents identified on this brace, but
there was another firm, Rose & Johnson, noted in the DAT to have
been in operation from 1886 to 1898. The DAT listing for the Rose &
Johnson firm mentions two patent dates for a brace or braces (U.S. Patent No. 342,727 and U.S. Patent No. 360,650). Those patents applied to ratchet brace(s)that were also made by the Davis Level & Tool Company. Sandy Moss has found a number of Davis Level & Tool Company braces which confirm these relationships. |
| Inventors | Representative Image (can be enlarged) | Example found by GB | Patents | Patent Dates
| Directory of American
Toolmakers: active years |
| E.E. Rose; R.D. Johnson |
 |
61 | 275,860 306,690 |
April 17, 1883 October 14, 1884 |
1875-1892 (Davis) 1886-1898 (Rose & Johnson) |