Patents for Francis A. Pratt |
Patents 1 -
10
of 24
      |
Picture | Number | Date | Patentee | Title |
 | 29,939 | Sep. 04, 1860 | F.A. Pratt | Improvement in devices for stopping and changing motion |
 | 33,816 | Nov. 26, 1861 | F.A. Pratt | Improvement in stopping and changing motion |
 | 36,479 | Sep. 16, 1862 | F.A. Pratt | Tool-rest for turning-lathes |
 | 40,082 | Sep. 22, 1863 | F.A. Pratt | Improvement in attaching pumps to bungs of barrels |
 | 40,276 | Oct. 13, 1863 | F.A. Pratt | Improvement in apparatus for attaching pumps to bungs of barrels |
 | 60,418 | Dec. 11, 1866 | F.A. Pratt | Improvement in sewing-machines |
 | RE2,588 | Apr. 30, 1867 | F.A. Pratt | Improvement in device for stopping and changing motion |
 | D3,611 | Aug. 10, 1869 | F.A. Pratt | Design for an upright drill |
 | 93,903 | Aug. 17, 1869 | F.A. Pratt | Metal Planing |
 | 100,064 | Feb. 22, 1870 | F.A. Pratt | Improvement in friction-clutches |