Patented and Distinctive Bit Braces & Augers, a Research Study
George Langford, Sc.D.
Updated December 9, 2016
return to georgesbasement
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.

Representative Image
(can be enlarged)
found by GB

Patent Dates
Directory of American
Toolmakers: active years

E.E. Rose; R.D. Johnson
Maker's marks
61 275,860
April 17, 1883
October 14, 1884
1875-1892 (Davis)
1886-1898 (Rose & Johnson)