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The first factory (in 1923) was at 49 Shotwell Street. [3] Because the bored cylindrical lock had a decided ease of installation advantage over the contemporary mortise lock, demand for the Schlage-designed lock rose and the company would purchase land in Visitacion Valley in 1925, which would eventually become the company's Bayshore factory ...
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]
Allegion plc is an American Irish-domiciled provider of security products for homes and businesses.. Though it comprises thirty-one global brands, including CISA, Interflex, LCN, Schlage and Von Duprin, the company operates through two main sections: Allegion International and Allegion Americas. [4]
The company's first locks filled the demand by the United States Government and various railroad companies for inexpensive locks. On May 21, 1898, Slaymaker's original manufacturing plant in Connellsville was destroyed by fire. Fortunately the buildings were insured and a new factory was constructed the same year. [1]
Harry Soref founded the Master Lock Company in 1921 and patented an improved padlock in 1924 with a patent lock casing constructed out of laminated steel. Linus Yale Sr. invented a pin tumbler lock in 1848. Linus Yale Jr. improved upon his father's lock in 1861, using a smaller, flat key with serrated edges that is the basis of modern pin ...
A square, rounded or V-shaped depression, filed or machined into a key, to allow the key to turn in its lock. In pin tumbler locks, the series of key cuts on a key causes the pins to line up at the shear line or gate so the lock will open. In warded locks, the key cuts bypass the wards so the key can push or pull the bolt. [6] Key pin
Trapped-key interlocking is a method of ensuring safety in industrial environments by forcing the operator through a predetermined sequence using a defined selection of keys, locks and switches. It is called trapped key as it works by releasing and trapping keys in a predetermined sequence. After the control or power has been isolated, a key is ...
A shroud covers parts of the stainless steel, allowing the locks to come in different colors. [10] Master Lock requested that the designer locks be stocked in departments outside the hardware section of retailers. [11] In 2003, the company acquired Illinois based American Lock and all their intellectual and material property. [12]