Thats one mean looking pic! lol shotgun exhaust on the D4 and serious looks on their faces! Mafia?? They mean business!! lol

Hi, ROME K/G.
I almost expected to the big guy holding a 'Chicago typewriter'. LOL

Cain't 'figger' that 'hozirontal' exhaust though.

Just my 0.02.

A few years ago I bought a D2 tailseat, and a D4 tailseat that spent their lives in an apricot orchard near San Jose,CA and they both had exhaust pipes like the one pictured, made of stainless steel... must have been a thing.

Exhaust --- some directed the exhaust out of the manifold over the track -- accomplished three things - eliminated limb catcher and blew all the dirt in your face, spoke volumes too!
others used flex pipe and directed it underneath, front or rear, either way had it's issues.
I would guess at least this directed some of the "bark and smoke" to the front, away from the operator. I do not see it as practical in an orchard with limbs low enough to catch the pipe.
Those limbs are "loaded" for bear when they turn loose from any obstacle, operator be ware! Many machines had "ramps" on the front side of the raised obstacles, trying to eliminate anything that would catch a limb.

My Italian friends might take offense to the organized crime comment, but that's okay. Some guys never cared for the exhaust manifold turned downward and blowing forward, as that was bad for smoke and more dust than having it directly over the hood; My 4U had quite a fancy side pipes set up along the fender and behind the seat. The stubby coming directly out of the hood was popular here, as loud as it was. JM

In our world Eastern WA.. The sacks were filled and passed to the Sack Sewer by the Sack Jigger. When I was 14 I jogged sacks on the doghouse of a IH51 in 40 ac of Triplet wheat .

A Combine is the machine that combines the function of the Header and the Threshing machine. Before combines we had Headers pushed by 4 or 6 (cant remember) horses or mules that cut the grain and using drapers and a suitable spout loaded the cut product in a follow aside Header Wagon.

Somewhere in this thread that car in front of the store is a 37 Ford. Behind its the snoot of a 46-47 Ford pickup or truck.
 

37 Ford car and behind it is a 46-47 Ford pickup or truck.