Safety pin

A safety pin is a utensil to make two pieces of fabric together securely.
Originally, the safety pin invented by the Mycenaeans, probably in the period 3000-1200 BC. There they were known as Fibula and were exactly the same as used nowadays.

In 1849, the safety pin was re-invented by Walter Hunt. By entering into a bet with a friend for $ 15, he lost the rights to the patent. This friend sold the patent by later for $ 400 at the W. R. Grace and Company.

A safety pin is made of sturdy but flexible metal. By pressing, the parallel sides, the open pin. The security consists in that the tip of the needle safely concealed in the cap. They were once widely used to attach diapers today more as a temporary solution to broken clothes or decorations such as a fastener for corsages.

Here a macro of the top of the safety pin.