American Bennitt bell cap 'Magic' self pulling corkscrew, with turned wooden handle, stamped to the bell `Pat. May 15th 1883`, pointed centre worm, 9.8cm wide x 12cm highThis was the first American patent for a bell style corkscrew, when inserting into the cork the bell shaped dome above the screw hits the top of the bottle and force the cork to start pulling from the bottle. The dome is hollow and allows room for the cork. For aparable example, see Fred O`Leary, 'Corkscrews: 1000 Patented ways to open a bottle', Schiffer Publishing, 1997, p.65.