Balanced up and down weights shifting left and right

[nebollinger]

I have imagined and made numerous designs that pair a weight going up with one going down to minimize the work in and simultaneously shifting the CG left and right as they also rotate. Thereby creating a CG change for a minimal amount of work in. This works well for the first half of the rotation. One side gets heavier and the other lighter because the weight moves further or closer to the center. But then the opposite happens. The formerly heavier side gets lighter and lighter causing the intended rotation to stop and go into seesawing.

In the attached drawing small circles are weights that rotate CW in the top circle and CCW in the bottom circle making the up/dn CG shifting as the weights move further from the axle on the CW wheel and closer to the axle on the CCW wheel below. This will likely mess with your head unless you draw this out. My proposal is that if we had a transmission that changed the rotation at 180 degrees rotation this rotation could continue. The two wheels are geared or belted together so they are kept in sync.

paired.up.dn.pdf

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[nebollinger]

Correction. The small circles are weight positions with only 1 weight on each wheel. So starting off with the top weight at noon and the bottom weight at 6 the top wheel/weight turns CW dropping the weight down and shifting it to the right further from the axle and the bottom wheel turns CCW with the weight rising and moving closer to the axle. Thus you see the CG shifting right causing the rotation.

[nebollinger]

Attached is a better drawing where you can see the weights...Red goes CW and green goes CCW. I am thinking a ratchet arrangement between the wheels that slides to connect the belt to a wheel opposite opposite turning vs a wheel same rotation turning.

So the reset direction correction becomes a shift connection to turn the same or opposite directions. My previous embodiments failed at 180 degrees but this design has a simple correction for that problem.

paired.up.dn.pdf

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Norman

[nebollinger]

Drawing correction. The 2 wheels must be offset and pivoted at the black dot as in this drawing.
Norman

[SHADOW]

Bonjour Norman,
Est ce que ces deux roues sont montées sur un disque?

Hello Norman,
Are these two wheels mounted on a disc?

[nebollinger]

The two wheels rotate on an axle where they mesh so they are kept aligned to each other. They could be arms with weights on them but for visual understanding/comprehension I draw them as wheels. The small circles represent visual positions of the 2 weighs for understanding/comprehension.

So as the top wheel rotates CW its weight moves away from the axle and as the bottom wheel weigh moves closer to the axle causing an imbalance and rotation.
But at the same time no loss lifting of the falling weight is required because it has a rising weight netting out the weight lifted to zero.

But at 180 degrees the rotation is wrong because the top wheel is at the bottom and bottom wheel is at the top causing the weights to shift the CG left instead of right.

That can be fixed with a transmission arrangement reversing the rotation.

Norman

[nebollinger]

The principle


Inspired by this drawing...
mt drawings mt138 has 2 men moving oppositely up and down shifting their weight weights right and left...
https://web.archive.org/web/20100920141 ... le=MT_1-20


With one weight going up and the other simultaneously down while
shifting them "horizontal to gravity " so one side is heavier and the other
lighter allowing gravity to pull/rotate the heavy side down.

The two weights are connected together via gears or belts so that they
remain in their proper positions maintaining the light and heavy side
as the entire thing rotates.


The trick is the rotation/heavy side is wrong when it reaches 180 degrees.
And that requires ether one or two gears between the two wheels
So that one side is heavier and the other lighter.

paired.up.dn.pdf

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See the attachment for the drawing. Norman

[nebollinger]

To further grasp the idea I refer you to MT138 in which I see two people with a weight that goes up and down on a parallelogram seesaw. If these two lean back and forth the seesaw will cycle up and down as we all understand. But when one side is down in order to cycle back up two men and weights must be lifted. But with my balanced up/dn weights idea the two weights move and and down synchronized so that there is no work loss to repeat a cycle.
And ideally we would want rotation instead of reciprocation.

You can see that in the attached sequence zip file if you unzip it and then view the jpegs as a slideshow.

sequence.zip

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Norman

[nebollinger]

After several unsuccessful attempts and constructing this idea I got one assembled BUT
The 6 half inch washer weights are not enough to shift and drop an rotate.
I used 3 16 in. bicycle wheels with tubes but no tires.

I will have to make it much more robust to increase the weight for a more valid test.

Norman

[nebollinger]

After many experiments I have determined that the weights used were not enough to create the rotation required because with manual positioning at 1pm and only a horizontal bar pivoted , it drops and rotates to 8 pm.
So my point about more robust is correct and I will pursue that in the weeks ahead.

So the shifting/dropping concept is valid and will work if there is enough output to continue past the half cycle.

Norman