HOLLWEG Carl Hollweg was granted an American patent in 1891 for a collapsing corkscrew, which protected the worm. These are commonly referred to as Hollweg-type and come in many sizes. They sometimes have advertising as in one of the examples below. Move mouse over any picture for further information and click picture for close-up view. ClicPic Photos copyright © 2005 Corkscrew Central. Do not use without permission. Click small picture to enlarge.        BACK