1955 Buick Special Two Door: Horn Assembly

[MStuartk]

Greetings and thanks for past assistance and hopefully someone can assist me with my current issue.  I do have the shop manual now, but I still cannot figure out how to get the horn button to stay on the steering wheel.  It was on the wheel just fine and the horn worked as it was supposed to, until one day, it just popped off.  I think I retrieved all of the items that came off with it, and attached photos of them.  

 

Whatever manner it is placed on the wheel with the spring and other items, it will not remain clipped onto the steering wheel and the horn blows even when I do not push it.  I suspect that it has something to do with the little clips that is on each steering wheel spine.  Any assistance would be appreciated.