A Lesson From Nature - Joe Cox and His Revolutionary Saw Chain

By the 40s, you had better designs and more compact internal combustion designs. But there were still problems with the cutting chain of these power saws. This was upended by changes in the saw chain design that can be traced back to this logger and engineer named Joe Cox. He made a breakthrough one day when he whacked a rotten stump with an axe,. revealing a cavity in wood that had been made by reviled insects.