Who invented the safety pin?
Safety pin
{'answer_start': array([18]), 'answer_text': array(['Walter Hunt'], dtype=object)}
American mechanic Walter Hunt is regarded as the inventor of the safety pin that bears resemblance to those used today. The safety pin included a clasp that covered the point and kept it from opening, and a circular twist at the bend to act as a spring and hold it in place.[3]  Charles Rowley (Birmingham, England) independently patented a similar safety pin in October 1849,[4] although the company no longer makes these.