On this date in 1784 Joseph Bramah came to London and challenged folks to open his new invention which he called a "padlock." Without the key no one could pick the lock. Business thrived and soon padlocks were everywhere. But it took more than 200 years for someone to figure out what to do when one breaks off a key in a lock. If a key breaks off, try inserting a coping-saw blade into the lock, teeth-side down. Then hold it toward the top to push tumbler pins up, using the jagged teeth to grasp a high point on the key shank. Work gently to avoid damaging the lock, slowly drawing out the key tip. If this doesn't work, call in a pro, but most times it does. And that's the On The House tip for today.