Walter Hunt invented the safety pin in 1849. The safety pin is a simple but very useful tool. It is used to fasten things together safely without hurting the person.

Walter Hunt was an American mechanic and inventor. He wanted to create a fastener that would not easily open and hurt people. His invention solved this problem with a simple design that has a clasp to cover the sharp point.

Since then, the safety pin has been widely used in clothing, crafts, and many other areas. It is a great example of a small invention that has a big impact on everyday life.

The other names listed are incorrect or not related to the invention of the safety pin.

So, the correct answer is Walter Hunt.