Leonardo da Vinci...extraordinary individual

Machine for Digging Trenches

The bucket of this digger is operated via the instantaneous release of the balance weight. The large rocking half-wheel helps lift the excavating bucket and lower the balance weight. The operation is repeated until the bucket digs down into the ditch. Then the digger is hauled on for excavating a new stretch.

And another stellar web site on a special individual--Leonardo da Vinci

Leonardo