Awhile ago I was given a Wichard knife that also has a marlinespike and shackler on it. Today I managed to get all three tools open at the same time

and can't seem to get any of them to close

If anyone has one of these knives or has used one at some point and might be able to shed some light on what I need to do it would be much appreciated.
Here's the knife:
http://us.binnacle.com/product_info....oducts_id=3603