You know clothing zipper is how to do?
According to records: 1890, a man named Judson Americans with the gift went to visit a cousin, the train, he saw an old woman slipped and fell, carry bag is expanded, the stuff inside is scattered over the floor. Judson quickly put down his bag, and go and the old lady, and when he looked back to take the package and found the gift to buy cousin disappeared.
Happened Judson made up my mind: we must design a seam closed tight, easy to open and close the device.
Once Judson to the blacksmith's shop to buy scoop and found scoop hanging neatly clever: a horizontally stick, hanging up or down two lines scoop with a stick spoon handle hole straight through, following the spoon handle downwardly, snap together tightly by the spoon portion and above. That just snap together two rows scoop, became the prototype of the "zipper" Judson envisaged.
After years of efforts, Judson bump tooth malocclusion principle, finally invented the zipper
Happened Judson made up my mind: we must design a seam closed tight, easy to open and close the device.
Once Judson to the blacksmith's shop to buy scoop and found scoop hanging neatly clever: a horizontally stick, hanging up or down two lines scoop with a stick spoon handle hole straight through, following the spoon handle downwardly, snap together tightly by the spoon portion and above. That just snap together two rows scoop, became the prototype of the "zipper" Judson envisaged.
After years of efforts, Judson bump tooth malocclusion principle, finally invented the zipper
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