My neighbor thinks the knife-making thing is pretty neat and gave me this stuff. Before I hear them up and hammer them into something sharp; what are these?

The longer thing says "52 M.H. Freeman pat'd <date> No 1". It's certainly some sort of tool with a tool-steel(?) back (different color steel and seems to have been run on bearings for some time). It also has some sort of cutter or crimping blade in it - obviously a replaceable piece of steel that is peened-in.

Edited August 9, 201510 yr by Gijotoole

Google patent search says that the lower item is half of a Moses H. Freeman self-feeding pipe cutter, and it may be of some value to a collector, even missing the pipe saddle. The hardened steel cutting insert is original.

The other tool is a gouge.  Probably for wood turning, judging from the thumbnail grind.  

Sans handle

Put a handle on the gouge, and post the pipe cutter on the vintage tool forums. Sell both, and buy some O-1 tool steel to make a knife with. O-1, and W-1 are pretty inexpensive, and widely available through machine shop suppliers like ENCO, J&L, MSC. ENCO seems to run a lot of specials for tools steel in their ads.

You make a vintage tool guy happy, and you get good known steel to make a knife, that's a win win.