It was a great thread. I find pistols (particularly auto pistols) more interesting than long guns. So many designs showed up in the 1900 - 1940 time frame, and all of them were trying to avoid patent infringement on other guns - even, in this case, Browning couldn't use his own swinging link design owned by Colt, so he used a cam to tilt the barrel. In that case it was one less part, so a success. It was interesting looking at your collection. It's surprising that they worked so well with so many patents to get around.