There are many corkscrew like instruments, tools and appliances which look like corkscrews for wine bottles but are really not for liberating the drinkable spirits.  These pages show a number of these with explanations of how they relate to the wine bottle opening types.

Thumb1.jpg (2735 bytes)  The Bovine Tap by Dr. Jens Arnbjerg and Dr. Joseph C. Paradi

If you have some “corkscrews” which come under this category, please e-mail me (see below on the navigation bar) the particulars and I will be happy to consider it for inclusion here.