Lancaster mainsprings. Two styles, original patent and the later improved patent
Original patent. This is a "rough" spring, not completely shaped, fitted, drilled or tempered. The "hook" shape is what fits into the forend to facilitate cocking of the actions locks. This spring was found in a gunmakers parts bin. It doesn't look like much.....but it is rather complex.
The new model mainspring.. This one is obviously broken. Notice the different shape of the cocking portion of the spring. This design upgrade was part of a patent taken out by Thorn. #7242 of 1884. This spring was the left mainspring in my body action gun (1896)
SLE stock in letting. Extremely well executed, best quality.
SLE back action locks, again, extremely well executed. The shaping of the tumblers, etc is very high quality.
