I got some bolt cutters a few weeks back from a tool merchant's sale. Reduced from £55 to £20.

Looked like a handy tool to have for emergencies, and so I put them in garage. Tonight I had a problem with a house door where the lock mechanism jammed (washer broke)… and as last resort I wanted to use the bolt-cutters to take off the handle. Had to use sledehammer instead.

As per my last question: http://uk.answers.yahoo.com/question/index;_ylt=Aku__4mzyWdEyPBTvjRbBzcgBgx.?qid=20070502110440AAc4VfU

Problem is I don't know how to use the bolt cutters. They don't open when I widen the levering arms. I thought it was a safety plate but now I'm not so sure cause I've just done a quick search of bolt cutter images and most of them have this plate mechanism.
http://images.google.co.uk/images?hl=en&q=bolt+cutters&btnG=Search+Images&gbv=2

These are my bolt cutters.. please how do I get them to work?
Thanks.(not really going robbing)
http://www.geocities.com/billythekid55uk/boltcutters