Monday, September 8, 2014

Farmall H and F-30s

When I wrote the article on tractor companies, I got frustrated trying to find tractor pictures that were not Copyrighted. So I'm making it a point to go to festivals that have an antique tractor display. I probably won't revisit farm machinery manufacturing for another year or so, thus I'm posting a sample of what I find as travelogs. This will make Copyleft pictures of tractors available to others, and it will help me find pictures when I need them myself.

(Update: Farmall was originally manufactured in Rock Island.)

The event report in the newspaper for the festival sponsored by the Conservation Foundation had one picture:

And the text explicitly mentioned "vintage tractors and trucks." Since I needed more pictures of Fordson tractors, I went. Unfortunately, this year there were just 3 tractors.

I always enjoy seeing a Farmall H because I raked hay and hauled hay wagons with one when I was a kid.
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And I'm now trying to get pictures of the back ends of tractors to track the introduction of PTO, 3-point hitch, and hydraulic hook ups. The 1939 Farmalls had just PTO. It would be under the shield that is under the "slow moving traffic" caution sign. I think that shield is part of the specification for the PTO standard. So safety is not a recent concern.

This tractor illustrates a swinging drawbar. For implements that are centered behind the tractor such as a hay wagon, the bar would be pinned in the middle. For implements that work to the side such as a hay mower, the bar would be pinned to the right for field work and pinned to the left for transport down the road. And when the tractor is pulling a drag after a field was plowed to smooth out the "ridges", it would be unpinned so that it could swing from side-to-side during turns. One had to be careful not to turn too sharply or the rear tire would catch the drag and pull it up and over the tire. That was considered a big boo-boo.


Farmall must have designed the H between 1937 and 1939, and I never realized how "modern" it was until I saw this 1937 tractor. Note the steering worm gear that is literally "up front and center." Also the transmission raises the drive train so that the axles are high. In a view of the rear of the other F-30 below you can see there is a gear casing that lowers the drive train down to wheel hight.

A tractor design would be manufactured for years before a new design would be developed. Here is a 1932 version of the F-30 model.


When I commented that the tractor did not have a PTO, the owner pointed out that it was under the tractor and that you had to use an extension to hook up a powered implement. So I took a closer look at the above picture and zoomed in on the PTO and increased the brightness. You can see the PTO shaft on right side of the gear case.


If you click the picture, you get a bigger version. Then you can also see the "ripples" on the gear casing left over from the sand mold that was used to cast the casing. Notice in the above rear view that the axle is not connected directly to the wheels. It is connected to a gear casing that provides another layer of gear reduction. In the following view of the right-side you can see that the fly wheel is driven by the same gear casing that powers the PTO.


I believe this horse-drawn sickle-bar mower is a permanent display at the farm. It took me a while to find a view of the gear case that did not have my shadow in it. The top of the gear casing has the words McCormick-Deering. The gear casing contains gears that drives a shaft going forward from the axel. Below is a closeup of the wheel at the end of the forward oriented shaft. It is hard to see in the grass, but a bar is connected to that wheel off center.

As the wheel goes around and around, the bar will go back and forth. The bar, in turn, drives the sickle back and forth.

This farm also had signs explaining the construction techniques for old barns. But I can't find any of the pictures I took of their reconstructed barn!

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