Chain Saws and the Industrial Revolution in the Woods

Most log working out in the woods at least, was done by these human powered tools. But it's this absolutely gruelling physical labor that took time and was hard on the bodies of workers. Even though there were no modern chain saws in exactly the form we think of for felling in buckingwood until the twentieth century, there were some very weird and interesting inventions in the 18 hundreds trending in that direction. A cogwheel is like a big metal collar that fits around the trunk of a tree. And then inside this metal collar there is a cutting blade that is dragged around the outside of the tree in a circular motion,. Powered by a hand crank a. I couldn't find