What is Draft Control ??? Yesterday

MaconRounds · Jun 21, 2018

What is "AUTOMATIC DRAFT CONTROL" as printed below in the early 1920's and 1930"s ?

Is it to control DEPTH ?
Is it to control TRACTION ?
Or is it both: as our modern tractors utilize.

Quote:
In 1936 the first production tractor incorporating the Ferguson System, (3-point hitch with AUTOMATIC DRAFT CONTROL), the Ferguson-Brown Type A and the first 3-point implements began production at David Brown’s facilities in Huddersfield, U.K. The Ferguson-Brown Type A led to the production of the Ford-Ferguson 9N in 1939 and subsequently the Ferguson TE and TO models.

In todays modern tractors, 1960 vintage and later, There are two control leavers. One for
TRACTION CONTROL and the other for DEPTH CONTROL.

What did The Ferguson Type A tractor utilize ?

Ultradog MN · Jun 21, 2018

You are confusing draft control and traction
control. Draft control was explained by Sean
in your post below.
One might consider draft control a sort of
traction control - but it wasn't. It could
also be considered a sort of horsepower
control - which it wasnt. It was not
automatic either.
If the plow is set so deep that the tires
started to spin the operator could adjust
the lift handle and lessen the draft.
The twin handles you mention did not come
out until 1976 on the smaller tractors.
There was no true "traction control" on any
Ford tractor that I know of except as stated
below, some of the 1965+ tractors had
differential lock. Differential lock was a
lever you clomped down on with your right
heel that locked the differential so both
rear wheels turned together. But diff lock
is wholly unrelated to the 3 point lift and
draft control.

paul · Jun 21, 2018

Draft control uses the big spring on the upper link of the tractor to automatically raise or lower the 3pt hitch as more or less load moves that
spring. It tries to keep a constant load (draft) on the tractor.

It has no relation to traction the way you are viewing things.

The goal is to keep the tractor moving across variable soils while plowing with a constant load (draft) on the tractor by varying the depth of the
plow.

With 2 point longer plows appearing, they came out with Dual Power system, which was the same but it was able to control both the three point
and the hydraulic cyclinder on the rear wheel of the plow.

None of this controlled the traction of the tractor, it just affected the draft placed upon the tractor.

Paul

Bob N.Y. · Jun 21, 2018

Here is a picture of the Ferguson Brown Type A. It is very similar to the Black Tractor which was Harry Ferguson's
prototype.

Sean in PA · Jun 21, 2018

On the models with two handles, they are generally for position control and draft control.

Position control is what it sounds like.You set an implement at a specific height position by moving the control handle to the corresponding position on the quadrant, and it should stay there as long as the system is working properly. It is usually used for implements that do not do ground engaging work, like to set the height of a rear mower or rear mounted snow blower, or even a roto-tiller, since the tractor's forward motion does not provide the force for the ground engagement.

Draft control controls the maximum amount of a draft force that you want the implement to encounter, and when the implement (usually a plow of some type) encounters an obstruction ike a root or a large rock or even a harder packed section of dirt, it will raise the arms until the draft sensor senses that the draft force has lowered sufficiently based on the position of the control handle.

Keith Williams · Jun 21, 2018

Paul,
The term used was LOAD MONITOR not Dual Power.

Load Monitor sensed the amount of torque being applied thru the drive train. Simply put, it monitored the load.
It could control the 3 point, a remote cylinder (special cylinder) or both together.
It could work with many types of heavy draft equipment.
I used it on a disk harrow with great success until the platform on my 7000 (7200 Row Crop) wore thru the line.
Keith

Bern · Jun 21, 2018

Traction control was used on Ford tractors with the advent of computers. First installed on the 40 series "PowerStar" tractors (e.g. 8340), a radar sensed true ground speed, while the computer compared that with wheel speed. If the wheels slipped above a level dialed in the by the operator, the 3-point would raise until the slippage fell below the "X" percent operator setting.

We deal with a lot of rain in my area, so going through wet holes every spring is a constant battle. The feature worked quite well actually - I spent many hours using it on a Genesis tractor. It worked best with a fully mounted plow, because raising the plow put more weight on the tires and helped you through the hole. Draft control does the exact opposite in mudholes.

MaconRounds · Jun 21, 2018

OK Great and THANK YOU all for clearing this up for me.

Now my real goal here is to find out THE FIRST FORD TRACTOR THAT HAD an ("AUTOMATIC") system to raise the hitch to increase traction.

It is a system That AUTOMATICALLY raising the hitch when the sensing mechanism (usually a big spring attached to a hydraulic valve) senses a reduced LOAD on the hitch due to the tractor tire spinning which reduces the pulling force.

Allis Chalmers called it "Traction Boost" which simply raises the hitch when the tractor looses traction. It uses a system described above. Allis first engineered and used it effectively on the 1948 WD.

I am wanting to know the FIRST FORD tractor that had something similar ?????

MaconRounds · Jun 21, 2018

It should be one of the Ford tractor made in the 1960's, I just don't know which model it is.....

Thanks again for you help .....

Destroked 450 · Jun 21, 2018

We had a WD Allis with traction boost, it worked similar to Fords draft control.
If the tractor ever spunout "came to a stop with a tire spinning" the lift system would not automatically raise the implement to help get the tractor moving again.

Sean in PA · Jun 21, 2018

(quoted from post at 12:48:06 06/21/18) OK Great and THANK YOU all for clearing this up for me.

Now my real goal here is to find out THE FIRST FORD TRACTOR THAT HAD an ("AUTOMATIC") system to raise the hitch to increase traction.

It is a system That AUTOMATICALLY raising the hitch when the sensing mechanism (usually a big spring attached to a hydraulic valve) senses a reduced LOAD on the hitch due to the tractor tire spinning which reduces the pulling force.

Allis Chalmers called it "Traction Boost" which simply raises the hitch when the tractor looses traction. It uses a system described above. Allis first engineered and used it effectively on the 1948 WD.

I am wanting to know the FIRST FORD tractor that had something similar ?????

There was never a Ford tractor that would raise the hitch based on sensing reduced load due to tires spinning. Draft control raises the hitch when there is too much draft (drag on the implement) but that requires that the wheels have good traction on their own for the system to sense the extra draft force.

From everything that I can find on Google searches, the Allis Traction Booster feature worked the same way as draft control on Ford tractors did. It didn't sense the tires spinning nor any reduced load. It raised the implement when it sensed an increased load.

What is Draft Control ??? Yesterday

MaconRounds

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Ultradog MN

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paul

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Bob N.Y.

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Sean in PA

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Keith Williams

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Bern

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MaconRounds

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MaconRounds

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Destroked 450

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Sean in PA

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