Gramp's machine was called "Big George". It vibrated stuff at insane frequencies and amplitudes. At various times he claimed it

1) Made paper stronger

2) Aged wine

3) Could filter industrial smokestack pollution

But after many years working with engineers, I finally realized that gramps just wanted to make the loudest, highest frequency sound possible.

His patent (one of many, no he wasn't a troll, he built everything he patented) http://patent.ipexl.com/US/3708033.html