In 1936, Lewis Nolan Nomar patented this device, which is basically a large 40-round magazine for the 1911 pistol. He envisioned a military use for the device in trench raiding, giving men a compact weapon with a large capacity. Unfortunately for him, the device was both remarkably (and unnecessarily) heavy and obsolete the day it was patented. Not only was trench warfare a thing of the past, but submachine guns could and would do the job of his device better than it could. Ultimately, I believe only two of these were made and was never formally tested by the US military. Nomar may have also experimented with adapting it to other handguns beyond the 1911, although I cannot find any firm evidence either way on that point.