A “Safety Pin” is a regular pin that includes a simple spring mechanism and a clasp. The clasp closes the loop at keeps the material being pinned from coming apart and protects the user from the sharp end.
Safety Pins
Be it known that I, WALTER HUNT, of the city, county, and State of New York, have invented a new and useful Improvement in the Make or Form of Dress-Pins, of which the following is a faithful and accurate description.