Here the definition of domestic Larousse of 1926 : Helicoid steel or iron stank generally finished by a handle or a ring.
The Archimedes screw
: This worm is a pointed steel shank on which one rolled up a more or less
cutting threading, fixed all along the shank by a welding with brass. One
meets especially this type of corkscrew in Germany or in the U.S. Certain
wine amateurs hardly appreciate them, because they tend to be inserted in
the cork and to drop some from the pieces in the wine.
The full worm: The full worm is a worm with a full central core and a more or less cutting threading. These worm can vary by the slope of the helicoid the step and the diameter.
The groove worm: The groove worm is a wire worm with round dug section.
square worm: The square worm is a wire worm with square section.
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