what do jointers do?

I have a 2 furrow dearborn plow with scotch bottoms in good shape and it is mostly complete. I just replaced the shares and stripped the paint from the mouldboards. The only thing missing is the jointers, do I need them and what is their purpose? Also why is one coulter a cutaway and one is not and what's the difference? Any info on this plow and how to adjust it would be greatly appreciated I realize I just asked a lot.
I will be pulling this with my trusty TEA 20.

On the moldboard, I totally agree with the comment that they have to have all the parts and it and the tractor have to be setup properly.

Also, agree on the use only as a "sodbuster".

Other than the above problems, I never liked the bumpy mess they left behind. Next trip over that field with a cultivating harrow is a butt buster for sure.

Mark

You can also find original copies of the owners manuals on ebay on a regular basis.

If the plow is set up correctly and your Fergy is decent, that plow was made to be pulled by the Ford N tractors and the Fergusons.

Have fun---Tim

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As MF Poor said, they were intended for sod plowing only, to cut the landside top edge off the furrow and throw it down in front of the furrow to be covered. Yes they do have to be adjusted perfectly to do the job intended. Quite valuable in early fall plowing of sod. With the top edge off the furrow one didn't get that grass growth between the furrows after plowing. If your plowing sod very close to freeze up that will kill the grass, jointers are not very important.

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There are extensions off the rear top of the plow bottom.

There are little oblong clips that sit above the plow bottom about on the shank.

Then there are the very rare (around here anyhow) little mini bottoms that plow ahead of the plow molboard.

Think all of them get rolled into the same name locally.....

--->Paul

Coverboards (AKA trash boards) are what you're talking about that mount just above the moldboard/shin. They're a curved piece that throws weeds/stalks/trash into the furrow so the moldboard can put the turned dirt on top of it.

Moldboard extentions go on the very tail end of the moldboard. They're supposed to help roll sod over "green side down". From what I've seen of them, they're designed to abuse YOUR shins while the plow is sitting in the barn :o

As you mentioned, names for almost all farm implements and their parts take on regional names. Never heard a disc called a disc harrow until I got on this site. And around here, a "harrow" is pronounced HAR-EE (rhymes with car EE)

I come from the east coast of Canada, and we always spelled them jointers, I notice your using joiners, I understand your from KY.

Notched and/or fluted coulters can help cut through cornstalks or the like better/ keep turning through muddy conditions, smooth are likely cheaper and work well too. Bigger is better, by far, the diameter is the most important thing.

--->Paul