Wood And Materials Used
red oak, pine
radial arm saw, miter saw, table saw, band-saw, lathe, planer, drill press, belt sander
When I was a kid on our farm in Central Illinois, we had a vertical elevator we used to lift grain and then send it to our bins, or to trucks. This elevator had a long vertical belt with steel buckets bolted to the belt. The belt and buckets took the grain to the top, then it fell off and went down round pipes to its destination.
A couple years ago, I made my first wood chain, so I got the idea, why not use wood chain instead of a rubber belt to lift the carriers??
My idea was to design a wood marble carrier that would attach to the wood chain links:
I used Sketchup, so here is the whole model in Sketchup:
Since kids can crank at up to 100 RPM, and I needed the model to run at just 5 RPM, I used a wood worm gear for the necessary 20:1 speed reduction ratio.
It turned out designing the carrier was the most challenging part of this project!! Here is a loading sequence diagram for the carriers:
Lots of trials & tribulations on this project. You can see my woodworking web site for all the details using this link. I uploaded my model to the Sketchup Warehouse, and there is a link on my web site to the Sketchup model.
I made a YouTube video of this model in action. You can see the video using this link.
Now it is ready for the grand-children endurance tests !! They should have fun with this one.