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10 hours ago, RWG686 said:

070605818582c617139f3d2e3842d5ad.jpg

Oooooooooh! :smiling:

Aveling & Porter steam road roller, 1867

UNITED KINGDOM - SEPTEMBER 14: Aveling & Porter steam road roller, 1867. Illustrated plate by Mallet, taken from 'Engineering', 4 October 1867, showing one of the first steam rollers built by the Rochester engineers and ironfounders, Aveling & Porter, for use in the city of Liverpool. Thomas Aveling built his first steam roller in 1865, and his firm went on to build more than all other manufacturers' combined output, during their production period.

Aveling & Porter steam road roller, 1867. Illustrated plate by... News  Photo - Getty Images    :wub:

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39 minutes ago, Gorby said:

Oooooooooh! :smiling:

Aveling & Porter steam road roller, 1867

UNITED KINGDOM - SEPTEMBER 14: Aveling & Porter steam road roller, 1867. Illustrated plate by Mallet, taken from 'Engineering', 4 October 1867, showing one of the first steam rollers built by the Rochester engineers and ironfounders, Aveling & Porter, for use in the city of Liverpool. Thomas Aveling built his first steam roller in 1865, and his firm went on to build more than all other manufacturers' combined output, during their production period.

Aveling & Porter steam road roller, 1867. Illustrated plate by... News  Photo - Getty Images    :wub:

I grew up in the days when steam rollers were still called steam rollers, but were in fact powered by diesel engines :1562769345_laugh(1):.

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2 hours ago, Dr Loopy said:

I find this one very intriguing. How does it work?* And what does it do? It looks a bit like part of the famous 'Ball Tank'. A bit.

The Douglas Self online museum (which is well worth a wander around if you have time) has this to say:

The monowheel tractor: approx 191?

Here the engine is inside the wheel, but not the driver.

This image was 'found on the net', and all attempts to find out anything about it, including a reverse image search, have failed. If anyone can assist I would be very grateful. Since its date is unknown it has been inserted here arbitrarily.

Drive to the wheel is via the two internally-toothed rings, and there is what looks like a power-takeoff (PTO) pulley this side, for driving other farm machinery. This actually looks like a rather practical idea.

It has been suggested to me that this is actually a diwheel, with the two wheels mounted right next to each other. That would explain why there are two internally-toothed rings rather than one. It would also explain how the thing was steered, by changing the relative speeds of the two wheels. The little wheel at the back seems to be just a stabiliser, and quite incapable of steering the machine.

 

A farming site says:

This Victor tractor sold briefly in 1919 bucked all traditional design and utilized a 6-foot-tall rim with a 2-speed transmission. The wheel had internal ring gears driven by roller pinions.

 

And then shows this beauty:

img_5061f8c930c13_26538-52f2114e61b849ae

This Ford Model B, sold in the mid-1910s, actually inspired the founding of the Nebraska Tractor Test because it was so poorly designed. It's one of several machines built during that era on which the engine was placed between the 2 large front wheels opposite a small single rear wheel.

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