How to get this bell to work?

I picked up this bell today at my local junk store for 50 cents. I hooked up a 9 volt to it and it rang once. Is there a simple way to make it ring a lot when i flip the switch? Thanks

Picture of How to get this bell to work?

Adjust the contacts on the left side, so that when the magnet pulls in the arm, the contact breaks open.

And make sure the contact points are clean.
Re-design4 years ago
A 9 volt may not have enough power to run it. Many of these are 6 volt or 12 volt.