I saw an article a long time ago about this design which had pictures detailing how it functioned, or it might have been a video - here's another in not so good of shape -
prototype-searle-semi-automatic-pistol-117861 ... or could this be the same one before it was 'restored' and given a better story? Some of the scratches on one side of the 'squeezer' look like they might be blued over. It also lists having the drawings.
