Wonderful reproduction of an antique gadget. Incredibly easy to use, it's also fun to watch in action.

1. Simply extend the worm/side handle fully to maximize the corkscrew's removal length.
2. Gently rotate the worm/top handle to initiate the corkscrew into the cork. 
3. Lower the device over the bottle raising the vertical rod/worm. With the frame's rim providing leverage, start turning the side handle to effortlessly lift the cork from the bottle. Such a neat item! 

The key is to ensure that you begin with the tool at its full length, allowing ample room to effortlessly extract the cork. No need for any excessive force. If it halts before the cork is adequately removed, it's likely due to not extending the worm fully to begin with.