Has a gasless push rotary mower (blades spinning horizontally, not vertically) not been invented or something? I am looking for a non-electric and non gas mower but all I can find are the reel mowers which cut vertically like scissors but fail to cut high grass and weeds.

 

A rotary style mower shouldn't have that problem since it would be the same idea as 99% of the gas mowers out there, but I can't seem to find one?

The ONLY one I have ever seen was built by an engineer friend of mine. This was years ago in college. I don't think anyone makes a retail version. I think they just aren't as efficient as the reel mowers. I'll see if I can dig up pics of that DIY mower.