| Patents for Pitts Agricultural Works |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 19,769 | Mar. 30, 1858 | J. Grant | Horse Power | animal powered apparatus |
| 21,495 | Sep. 14, 1858 | G. Hely | Horse Power | animal powered apparatus |
| 22,950 | Feb. 15, 1859 | G. Hely | Horse Power | animal powered apparatus |
| 35,062 | Apr. 22, 1862 | S. Perry | Tread horse-power | animal powered apparatus |
| 35,063 | Apr. 22, 1862 | S. Perry | Improvement in circuit horse-powers | animal powered apparatus |
| 39,324 | Jul. 21, 1863 | S. Perry | Improvement in horse-powers | animal powered apparatus |
| 39,325 | Jul. 21, 1863 | S. Perry | Improvement in horse-powers | animal powered apparatus |
| 69,243 | Sep. 24, 1867 | S. Perry | Improvement in chain-wheels for chain horse-power | animal powered apparatus |
| 122,488 | Jan. 02, 1872 | S. Perry | Improvement in horse-power jacks | animal powered apparatus |
| 210,747 | Dec. 10, 1878 | L. Bronson | Thrashing Machine | threshers and thrashers |
| 257,994 | May 16, 1882 | D. Farquhar, R.W. Aitken | Valve Gear for Steam Engines | steam engine valve gear |
| 288,753 | Nov. 20, 1883 | R.W. Aitken | Brake for Traction Engines | traction engine brakes |
| 303,785 | Aug. 19, 1884 | R.W. Aitken | Valve Gear for Engines | steam engine valve gear |
| 342,064 | May 18, 1886 | W. Butler | Straw Stacker | hay or straw stackers |
| 344,071 | Jun. 22, 1886 | R.W. Aitken | Steam Boiler | stationary boilers |
