Many cooking tasks are commonly done with two hands. What do you do if that's not an option for you? Sichen Sun developed this mechanical cutting board in response to this need. It's called Better Cut.
First, Sun observed the food preparation activities of people who can use only one hand. Many of them had already improvised solutions from conventional cooking equipment. Forms of clamps were common. These held food in place. But they required a lot of resetting, clamping and unclamping.
Sun's Better Cut uses adjustable gears to hold down food and move it forward along the board for chopping. Pushing and pulling the handle moves the food through the gears, which serve as adjustable clamps.
-via Core77