New to Me Moldboard

That moldboard has a funky "cover board",,,,,,, that little part that is raised above the level of the regular moldboard. The purpose of it is to take a little slice of the dirt as it comes up and to flip it over, early, which would cover trash a lot better. I have seen a lot of different styles, but that is a new one to  me!

Thanks, both of you. Clearly a little different from the plows I've seen around central Massachusetts! I'll have to go looking for numbers when time permits. 

That is a moldboard with a shin, some AC plow bottoms used shins some didn't. The leading edge of the moldboard tended to wear fast so a shin was easier to update than the whole moldboard. In my plow bottoms book I see the trash cover shin piece offered for 371, 372, 373, 374, and 375 plow bottoms. Different part number for the 375 from the rest. The 370 family bottoms are newer than a 50 plow frame, but since AC used the same plow frog mounting bolts and bolt positions for a very long time a 375 bottom could be mounted on the earlier frame. And the 375 bottom parts were made by several makers for a long time, might even still be made, I haven't looked lately.

Gerald J.

It is possible it morphed from the beginning. I believe that ordering an AC plow took three orders. One for the plow frame, one for the hitch, and one for the bottoms. That were assembled by the dealer or the farmer. I don't think there were package orders for a complete assembly with preselected bottoms for a particular plow frame. As far as i can tell (from not being in my plow frames parts book) the 50 was an earlier product than the 60, 70, and 80 but all where made out of mostly stock steel bars bent and bolted together with similar shapes. The distinctive feature of the 50 was the vertical plow shanks where 60, 70, and 80 were slanted. 60 frames like 50 frames were fixed width. 70 and 80 had more bolt holes and pieces so they could be assembled at least a couple different bottom widths. 60 and 70  original plow shanks were shear bolt mounts. 80 came with spring trips. In the plow parts book there are kits for installing spring trip shanks on 60 and 70 plow frames. So morphing and changes were part of the plans. With the 50 being earlier than the 60, 70, and 80 its probable that the available bottoms were fewer.

Gerald J.

Trash coverer shin Assy for 371,372,373 bottoms part #344474, used with brace part # 340965