| Patents for J. W. Coombs |
Patents 31 -
45
of 89
      |
| Number | Date | Patentee | Title | Type |
| 38,141 | Apr. 14, 1863 | J.A. Ayres | Improvement in Screws | screws |
| 38,922 | Jun. 16, 1863 | J.A. Talpey | Centering device for lathes | metal lathe accessories and attachments |
| 39,404 | Aug. 04, 1863 | H.H. Jennings | Surface Gage | surface gauges |
| 39,465 | Aug. 11, 1863 | D. Cheney, S.S. Cheney | Lathe for Turning Locomotive Crank Pins | metal lathes |
| 39,755 | Sep. 01, 1863 | A. Schwitter | Improvement in engine-turning machines | ornamental lathes |
| 40,098 | Sep. 29, 1863 | T. Foster | Hay Fork | hay or straw forks |
| 40,483 | Nov. 03, 1863 | S.C. Howes | Molding Plane with a Curved Throat | plane cutter adjustments |
| 40,674 | Nov. 24, 1863 | C. Chinnock | Improvement in Corkscrews | pocket and protected cork extractors |
| 41,262 | Jan. 12, 1864 | J. Olmstead | Upsetting Tires | tire upsetters |
| 41,571 | Feb. 09, 1864 | A.F. Cushman | Improvement in Box Planes or Scrapers | box scrapers |
| 41,797 | Mar. 01, 1864 | J.W. Van Deventer | Slitting Gage | marking gauges |
| 42,353 | Apr. 19, 1864 | H.C. Crowell | Improvement in shingle-machines | shingle machines |
| 42,691 | May 10, 1864 | A. Schwitter | Improvement in rose-engines | ornamental lathes |
| 44,225 | Sep. 13, 1864 | H.S. Shepardson | Improvement in Spirit-Levels | levels |
| 45,894 | Jan. 10, 1865 | F.O. Washburn | Improvement in Calipers | calipers |
