The doorknob was invented in 1878 by Osbourn Dorsey when he filed a patent for an internal mechanism that latched doors shut. If Dorsey's knob was on the left side of a door, it unlatched a metal bar on the right side of the door.Know More
The metal rod latched into a hole in the door frame. Homeowners accessed the connection in the frame by unscrewing a small metal cover.
Before doorknobs, homeowners secured doors by using a latch string that looped around a bar to keep strangers out. In ancient times, people raised and lowered bars to secure doors so that people could not get inside.Learn More
Joel Houghton received a patent for the first dishwasher, which had a wooden hand-operated wheel designed to splash water to clean dishes; however, Josephine Cochrane invented the first workable dishwashing machine, which was mechanical and hand-operated. Introduced at the 1893 World’s Fair, dishwashers did not become popular until the 1950s.Full Answer >
Mary Phelps Jacob, a New York socialite, received a patent for the "Backless Brassiere", the precursor to the modern bra, on Nov. 3, 1914. She created it using two handkerchiefs and a ribbon after buying a sheer evening dress that was unsuitable for wearing with a whalebone corset.Full Answer >
Jeans were officially invented in 1873, the year that Levi Strauss and Jacob Davis received their patent for hardy blue twill fabric pants with riveted seams. The fabric associated with jeans predates the patent by centuries, but it was not until 1873 that this specific style of pants was invented.Full Answer >
Richard Arkwright and John Kay of Great Britain invented the water frame in the late 1760s, and Arkwright applied for a patent in 1769. The patented spinning machine twisted 96 strands of yarn simultaneously.Full Answer >