Old Farm

[nsm1978]

Found these on an old farm after it was plowed. I'm guessing old farm equipment. Any ideas to what There are 3 separate pieces.

 

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[pa plateau hiker]

The 5th photo looks like a hardy.

 

[nsm1978]

The 5th photo looks like a hardy.

I felt kind of weird positing it lol

 

[BosnMate]

Number 4 looks like a broken guard off a sickle bar mowing machine.

First photo might be a spacer off a disc harrow, but the axle hole seems small, so don't really know, perhaps a scale counter weight.
The last picture looks like it might be a broken, very very rusty horse shoe.