pin, his best-known invention. He sold his patent of it for $400 () to W R Grace and Company, to pay a draftsman he owed $15 to (). J.R. Chapin pressured Hunt to pay off what was due to him for the drafting work he had done on previous inventions that needed patent drawings for application submissions. Hunt came up the safety pin ("C") in 1849 through experimentation with high tension wire. His invention was an improvement on the current way clothing items were attached together before because of a protective clasp ("D") at the end and a coiled wire design ("B") with a spring tension on the pointed end leg ("A") to keep it in the protective clasp even if the pin device was moved around. The basic design is the same in the twentieth century as when Hunt came up with the device in the nineteenth century and is manufactured inexpensively now. W R Grace and Company made millions of dollars profit off the product. Other inventions One of Hunt's popular inventions was a paper shirt collar. This time he sold the patented design and negotiated for royalty payments, but the item only became popular after he died. The unusual item was first put on sale in New York City in 1854 and used then mostly for stage purposes. In time it became fashionable and the general public then started using them. High production of the item came about and at one time there were as many as forty factories making paper collars in the United States. The manufactured output in 1868 became 400,000 that were sold to the general public. Hunt often used the legal services and patent research work of Charles Grafton Page, a certified patent lawyer who had worked at the Patent Office before, when seeking a potential patent for one of his inventions. His inventions covered a wide variety of fields and subjects. About two dozen of Hunt's inventions are still used in the form in which he created them over one hundred years ago. Some of Hunt's important inventions are shown below with the patent drawings. Later life and death Hunt created numerous usable everyday inventions in his lifetime, however he never became independently wealthy from them. He died of pneumonia at his place of business in New York City on June 8, 1859. He is interred in Green-Wood Cemetery at Brooklyn, New