| Hartford | |||||
| John M. Fairfield, Hartford, Conn., U.S.A. | |||||
| Later: John M. Fairfield, Cleveland, U.S.A. | |||||
| Models and s/n | Y | M | D | Remarks | Ref. |
| Model 1 | |||||
| 1895 | 6 key-rows, 75 keys, sold in Germany with the brandname "Cleveland" | 13 | |||
| Model 2 | |||||
| 1896 | Improved comb, for more precise typing | 13 | |||
| Model 3 | |||||
| 1905 | 44 keys, shift model | 13 |