3 point weight transfer hitch

I don't really see any weight transfer hitches in use. They seem to be a good concept. The type of 3 point attachment that will tow your drawbar implement and through a geometric mechanical connection will attempt to lift it ever so slightly to put the weight on the tractor wheels. There are almost 2 pages (double column no less) devoted to one in my 656 Farmall operator's manual, but some of our other tractors' manuals don't even mention such an option. Thus far the only other place I've seen one was in an Allis Chalmers coffee-table book where it's pictured on the back of a 190.

Who offered the best design or most universal design?

Why aren't they popular?

Do they actually work? Do any work with toplink sensing?

I could see some potential damage or safety issues if you would pull the wrong draft control lever or have the wrong lever settings with the transfer hitch attached: i.e. lifting your implement tongue 30 inches in the air with one design or bending your regular drawbar with another.


thanks for input

karl f


9. attaches to implement tongue
11, 12, 13. attach to implement
all 3 links are attached to device
forward direction of travel is north east

We used weight transfer when plowing as far back as I can remember. Whether it was the AC "snap coupler" or generic three point hitch pulled semi mounted plow.
I remember seeing that same AC hitch in a picture, specifically for use with their disc harrow. I don't think it proved practical. The best thing to come along for pulling a disc on plowed ground was a set of dual wheels.

My 1964 1800 oliver has it on the 3 point. All my AC'S have it. It is far more active on the AC's. Will actually lift the front end off the ground.

picture was added in an edit, i'm still looking for one of the allis's design.

karl f

Sorry. Somehow I missed your picture. The AC hitch I was refering to was a flat plate that was pinned to the draft links of a 3 point hitch and applied upward pressure under the disc hitch.

Not popular?????????????? Anything I'd post would come across as conscending; I suppose if one farmed with all wheatland/standard/crawler tractors, there wouldn't be a lot of knowledge about the concept..........

Heavy draft load such as ploughing is done with
semi-mount equipment. So no place for it and no
advantage.
Anything with a pto and a drawbar is not feasible.
Three point hitch drawbars are wobbling widow
makers allowing towed loads such as wagons sway.
These draft transfer hitches have also assisted
equipment operators to kill themselves with flip
overs.
Extra cost.
Time and labour to remove and re-install.

Any one of those reasons are enough for manufacturers to scrap the weight transfer
hitch.M4WD works much better.

Your out of tune with tractor tech. ALL farm related tractors with 3pt. have weight transfer systems. Todays are controlled by potentiometers, rather than springs and mechanical linkages. These systems control sensitivity and draft to get the hitch to react in a suitable manor. The depth portion is set manually and most modern systems cycle at least 60 times a min. lifting and lowering the implement hooked to the lower draft arms. Doesn't need to be 3 point mounted. Go sit in a new tractor and you will see several knobs and toggles devoted to controlling the draft/depth/sensitivity, on it.

(quoted from post at 15:06:23 03/11/11) Your out of tune with tractor tech. ALL farm related tractors with 3pt. have weight transfer systems. Todays are controlled by potentiometers, rather than springs and mechanical linkages. These systems control sensitivity and draft to get the hitch to react in a suitable manor. The depth portion is set manually and most modern systems cycle at least 60 times a min. lifting and lowering the implement hooked to the lower draft arms. Doesn't need to be 3 point mounted. Go sit in a new tractor and you will see several knobs and toggles devoted to controlling the draft/depth/sensitivity, on it.

Click to expand...

Adirondack case guy:
I'm not completely in the dark on the post 1985 stuff, just not hands on experienced (lit with a cheap flashlight?). After all I'm posting on a site called Yesterday's tractors...
I know they have push button hitch/hydraulic controls, some videogame-like shifting, auto shift up/down based on load, and fancy one button headland program automation. I didn't make the leap that they could also control trailing implement draft (load).

Just to be clear, you are saying that a "new" tractor pulling an appropriate sized regular old design pull behind disk harrow (attached with one pin to the drawbar, and lifted with a single remote cylinder) can sense driveline load changes and lift/lower the disk's cylinder to maintain load and still cut deep? It would sure beat hitting the remote spool to get out of a tough spot where you're spinning wheels only to find you lifted it too high and barely grazed it.

karl f

(quoted from post at 14:50:09 03/11/11) Heavy draft load such as ploughing is done with
semi-mount equipment. So no place for it and no
advantage.
Anything with a pto and a drawbar is not feasible.
Three point hitch drawbars are wobbling widow
makers allowing towed loads such as wagons sway.
These draft transfer hitches have also assisted
equipment operators to kill themselves with flip
overs.
Extra cost.
Time and labour to remove and re-install.

Any one of those reasons are enough for manufacturers to scrap the weight transfer
hitch.M4WD works much better.

Click to expand...

buickanddeeere:
I was aware of some of the obvious "do not" actions for such a contraption. Aware of semi mount plows and pto--since pto is 90% rolling load and needs perfect geometry. Some other things you mentioned, I was wondering about, and a couple I forgot to consider (hassle to R&R and cost). Appreciate the comments.

karl f

good discussion so far, and about tractors...


out of the 2 systems I'm aware of, the ac seems simplest and safest. But I've been thinking that without a hydraulic link to the remote on the disk, either system is flawed because just weighting down the tractor/pushing the wheels into the ground without shallowing the disk would be a recipe for getting stuck unlike the draft control on a plow which also shallows while transferring weight. To make it work with 70s technology, you'd have to tap into the lift cylinder pressure and have an extra flow control valve or 2 to synch the operation. Guess the snap coupler system of the 50s might have the edge on the 3 point version, but was that much better with the pull type disk harrow?


karl f

There are 3 point weight transfer hitches floating around for older Fords and Fergusons, alot of people dont even know what they are.

Here is a picture of a Ferguson weight transfer hitch. You can't see the opposite arm very well though.

don't need a 3 point or draft control to increase traction with this patent:
see link
http://www.freepatentsonline.com/3037791.pdf

karl f

this image is the allis booster.


numbers corresponding to the illustration:

1. implement tongue pinned here

2. "plate:" lifts against implement tongue to boost traction

3. pins for the lower lift arms (must have lower link sensing)

7. attaches to tractor drawbar, which from what I read is unanchored when used with the attachment.

#5 is a wear plate, unsure where it goes. and forward is not illustrated with the greatest accuracy...



karl f

and the patent for the allis traction booster hitch
http://www.freepatentsonline.com/3420313.pdf

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