New parts question

With bar in swing free mode, hitch it to a tung steered 4 wheel hay wagon and ask a city boy to back it up for you. hehe!

Not too many real uses on Ns if all your implements are 3-point.

and..... .
If you were doing soil preparation such as disking, harrowing etc
and dragging unmounted implements you want the drawbar to swing for ease in tight corners.
Some pull implements also reguired and off-set to the drawbar so you could lock it right or left of center.
Basically the swinging allows tighter corners before the implement rides up on the rear tire.

TooTall..... ..the swinging drawbar that you show is EARLY version with under PTO swinging pin and supported by ROLLING along the 11-hole drawbar. It works on 9N/2N's too. This picture shows the rolling drawbar "PINNED" by bolts so it don't swing too much.

Why do you need to swing? Pretty handy when pulling old horsedrawn implements. Old horsedrawn implements usually have adjustable harness bars called "eveners" so you can match unequal horsepower to pull straight ahead. (not all horses are equal) You can match a 10-hand donkey with 16-hand mule to pull plow straight; or a 14-hand saddlebred with 20-hand Percheron. Ah, the power of leverage.

The modern swinging drawbar (pictured) is for the under-the-diffy 8N ONLY. It has a removable "pin" in the rectangular diffy block so that you can slide or remove the cranked pullbar. You DO NOT use the 11-hole drawbar with this style of swinging drawbar..... ..Dell

Mr. 4 Degree's has "4" degree's and has stated that he is much smarter than us so on that note "He Must Be Right" (Although, I agree with you)