Toni,
Like others have said, the first is a jointer. The one pictured is missing the file that clamps into it. I have one just like this and do use it. When sharpening hand saws (not two man saws, but typical panel saws or back saws), the first task is to use the jointer to make sure all the teeth are the same height. This guides a file along the face of the blade, knocking down any "tall" teeth before you start sharpening with the small triangular file. It's not something that needs to be done each time you sharpen a saw, only when you've got a few rogue teeth to tame.
The other item, i've not seen before, but looks to me like a sharpening jig to make sure the filing angle is correct for both crosscut or rip saw sharpening. I do this freehand and have had good luck.
If you're planning on sharpening hand saws, i've found the jointer, a saw vise, and a saw set to be most useful. The saw vise clamps to a work bench and holds a 25 or 30 mm length of the blade with the teeth pointing up while you work on it. You can rig one up with some long wood scraps and a bench vise, but the saw vise is more convenient to use.
The saw set is a hand held tool that's essentially a specialty pliers. It has a small triangular jaw that pushes and bends one saw tooth slightly to the side. The other jaw is adjustable, allowing you to control the amount the tooth is bent over. You control the kerf of the blade. They're pretty common items on the used tool market. You shouldn't have any difficulty finding one at a reasonable price. The usual suspects made good versions - Stanley, EC Stearns, Millers Falls, etc.
Have fun with it. I'm a bit less comfortable with my handsaws than i am with my hand planes, though i do enjoy sharpening a nice old saw.
Paul Hubbman