As stated on the Tangye home page disclaimer, exact dating of early Tangye engines is hard but with a lot of careful research I believe the date range of plates used by Tangye were close to those stated below.
Note: the use of Plate numbers are not Tangye designation, only used for identification on these pages
 |
Approx 1891 - 1900 Plate 1 used on Pinkney Patents Petroleum Engines |
|---|---|
 |
Approx 1891 - 1900 Plate 2 used on Pinkney Patents Gas Engines |
 |
Approx 1900 - 1904 Plate 3 used after Pinkney Patents Engines into the type "P" Engines |
 |
Approx 1903 - ? Plate 5 used on Petrol Marine Engines |
 |
Approx 1904 - ? Plate 4 used After Type "P" Engines |