| Patents for Providence Steam Engine Co. |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 4,202 | Sep. 19, 1845 | F.E. Sickels | Mode of connecting steam-cylinders with steam-chests |
 | 12,507 | Mar. 13, 1855 | N.T. Greene | Cut-off valve for steam-engines |
 | RE565 | Jun. 01, 1858 | F.E. Sickels | Improvement in the mode of connecting steam-cylinders with steam-chests |
 | 68,555 | Sep. 03, 1867 | O.C. Burdict | Improved machine for heading bolts |
 | 97,351 | Nov. 30, 1869 | O.C. Burdict | Improved bolt-heading machine |
| | 335,933 | Feb. 09, 1886 | H.J. Johnson | Mechanism for Regulating Steam-Engines |
 | 389,146 | Sep. 04, 1888 | N.T. Greene | Valve-gear for steam-engines |
 | 422,769 | Mar. 04, 1890 | N.T. Greene | Liberating valve-gear for engines |
 | 424,605 | Apr. 01, 1890 | N.T. Greene | Exhaust-valve for engines |
 | 425,219 | Apr. 08, 1890 | N.T. Greene | Exhaust-valve-gear for engines |
