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The modern bored cylindrical lock was invented by the German-born engineer Walter Schlage [4] in 1923 [5], as an innovation on a patent filed in 1920 [6] for a lock whose installation required a face bore and surface rabbet, simplifying door preparation compared to a traditional mortise lock.
A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.
Working with his neighbor, Henry H. DuPont, an Indianapolis architect, the two men developed and were awarded a series of nine patents relating to new and improved exit door hardware. All of the patent designs focused on a single lever bar (and related hardware) that would cause a locked door to pop open when simple interior pressure was ...
His first patent was in 1909, inventing a door lock that turned lights on and off. [1] At the time, Schlage was a citizen of Germany residing in Berkeley, California. [2] In 1919, Schlage patented a door knob which, when pushed up, locked the door. [3] [4] This was succeeded by a door knob incorporating a push-button lock, patented in 1924. [5]
Schlage had just completed a move from the Old Office building to a three-story New Office located nearby, at the corner of Bayshore and Leland. [10] Schlage remained an Ingersoll Rand subsidiary for nearly 40 years, until Schlage and other security hardware companies were spun off as part of Allegion, formed in December 2013. [12]
Junior Boucher, 36, stands accused of killing Brian Hiltebeitel, 65, who died in the brutal attack at Sandhill Crane Golf Club in Palm Beach County.
In Terminal 4 at LAX, a TSA officer flagged a carry-on bag with 82 consumer grade fireworks, three knives, two replica firearms and one canister of pepper spray.
A litter of two-week old puppies was crammed into a bucket and abandoned alongside a road in Union County, New Jersey on Thursday, police said. The nine puppies were found...
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