S. Matthews provisional patent 3573 of 1878. It seems to be an adaptation of the underlever fastener commonly attributed to Jones. Earlier, F. Baker Patent 1735 of 1878 had a very similar design, with the major difference only in the lever shape. I see these mostly on Rigby guns, but also on several others like Horsley and Cashmore. Here is an example from a Cashmore Nitro.


Last edited by Daryl Hallquist; 02/23/12 06:53 PM.
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