Gravity activated self-leveling field landplane.

[bcp]

From:
Land Plane

Interesting idea. I wonder it a one-wheel bump would start the weight swinging causing the blade to rock.

Bruce

 

[oosik]

I guess that weight can swing left/right. Wonder why it was built that way... Seems that just adding weight would be sufficient.

 

[Egon]

Fraid I'm not able to figure how it works?? Wonder if there is adjustment for blade angle to crown road.

It would make a nice base for a grader with hydraulics.

Are those a couple of 56/57 Cadillac's in the background?

 

[fried1765]

Fraid I'm not able to figure how it works?? Wonder if there is adjustment for blade angle to crown road.

It would make a nice base for a grader with hydraulics.

Are those a couple of 56/57 Cadillac's in the background?

As shown: Best used to support a portable dock, or as a mooring!
Roll it into the water in the Spring; pull it out in the Fall.
Fresh water only!

 

[TMGT]

I think I see how it works, interesting approach to to level grading without having to have any operator input.

 

[bcp]

From what I think I see on the second photo, when the weight goes to the right, the vertical rod lifts the front arm of the axle, forcing the wheels down and blade up. Swinging to the left pushes down on the rod, lifting the wheels. This makes no sense to me yet. I don't see any way to tilt the blade in relation to the ground. Maybe it only moves one wheel up and down, but I don't see that in the photos provided.

Bruce

 

[oosik]

Looks to me like an object designed to give Einstein, Newton & Voltaire a headache.

 

[TMGT]

It looks like it rolls the frame/blade assembly side to side in relation to the axle

 

[olPete]

I wonder if the swinging weight just puts extra squish in the downhill tyre, to help make a crown instead of grading it out. I can't tell why the chains are there as it looks like the axle is welded solid???Send it over, I promise I'll figure it out and report back...
Looks like the axle is designed to flex a little hence the stubs/extra bearings, like a swaybar on a vehicle

 

[Ford850]

I see it now. The right wheel is on a hub dog legged to the rear of the axle and the left is on a hub dog legged forward. While driving forward on a grade that is low on your right, the weight swings right. When the weight swings to the right it pulls up on the vertical rod, which pulls up on the horizontal lever in the center of the axle. That turns the axle rearward, lowering the right dog leg and hub/wheel. That also raises the left dog leg and hub/wheel. That would force the left side of the blade lower and raise the right side. Pretty slick!