| All Patents in class 254/103 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
| | 5,374X | Feb. 16, 1829 | T. Evans | Jack screws for stowing goods in ships' holds |
| | 84,577 | Dec. 01, 1868 | J. Pickering | Apparatus for Raising Weights |
 | 452,991 | May 26, 1891 | A.L. Colburn | Spindle feed for drill press |
| | 878,522 | Feb. 11, 1908 | F.L. Gormley | Lifting Jack |
| | 924,692 | Jun. 15, 1909 | H.A. Schatz | Lifting Jack |
 | 1,052,921 | Feb. 11, 1913 | I.E. Hindman | Lifting-jack |
 | 1,054,413 | Feb. 25, 1913 | I.E. Hindman | Lifting-jack |
 | 1,089,703 | Mar. 10, 1914 | I.E. Hindman | Friction clutch for screw-jacks |
 | 1,228,210 | May 29, 1917 | I.E. Hindman | Screw-jack |
 | 1,234,334 | Jul. 24, 1917 | I.E. Hindman | Brake mechanism for lifting-jacks |
