May 4, 2005
Keeping You In Stitches
By Sally Cowan
Two weeks ago I started some articles about useful things in our everyday life. Those of us who sew know the importance of a safety pin. How many times have you used one to pull elastic through a casing? In prehistoric times, humans used simple pins, made from thorns, splinters of wood, or fish bones, and later from metal, to fasten their clothes together. Such pins had an obvious disadvantage, however, that they could easily fall out. Improved, U-shaped versions appeared in Bronze-Age Europe in the second millennium BC. By the sixth century BC the Romans had developed the fibular—a U-shaped pin with a cradle at the end of one arm, a point on the other arm, and a coil at the bend, providing tension to press the point into the cradle and hold the pin closed. But somewhere, the fibula was lost. By the Victorian times buttons, laces, snaps and hook-and-eye had replaced the once ubiquitous pin. In 1842 Thomas Woodward of New York was granted a patent for a “shielded shawl and diaper pin” that was almost exactly like today’s safety pin. It had a cup at one tip to hold the point and shield it. But it had one crucial drawback—it was hinged at the bend, which meant that the tension to hold it closed had to come from fabric bunched between the two arms. Too little fabric and the pin would come open, too much and it would bend out of shape.
The solution to this problem was solved by the “dress-pin,” patented in 1849 by Walter Hunt. Does the name sound familiar? He also invented the ice plow, early bicycle, and the first practical sewing machine. He owed a draftsman $15.00 for a drawing so the draftsman proposed that Hunt should assign him the rights to whatever he could invent using an old piece of wire. In return the debt would be forgiving and Hunt would be given $400.
After three hours of twisting, Hunt came up with a self-sprung safety pin, where the wire itself was coiled at the bend to make a spring that would provide tension to hold the point against a cradle or shield. There was no hinge joint or pivot that would wear out or work loose. It could be used, said Hunt in a patent considered a classic by inventors ever since, “without danger of bending….or wounding the fingers.”
Don’t you wish you had invented the safety pin? I do. (comments: send to stitches@aug.com.)
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