With synthetic corks and aluminum closures on the horizon, Fred O'Leary writes that time is on the side of technology, not tradition, and that corkscrews may be on the endangered list. They are pulled from us by the Great Extractor. Korn's patent 1883. A champagne pattern. The curved blade is a wire breaker.
Prongs turn the cork which then can be worked out.
Courtesy ibdennis Gun tool worm. 1999 Oregon Knife Collectors Association.