An inventor of a patt tlf p test ed its efficacy a few days since, in the pr senceofa large crowd tC ti V, tl t girdled to his body, he jumped into the Oh not far from "Walnut street. Some of th gearing became displaced, and instead of th inventor's head remaining at the top ol th water, his position was reversed—the head down and feet up. It % as tl dith Ity tl assembled crowd saved the gentleman from drowning.