Linus Yale, the inventor of the “cylindrical lock”, was inspired by the Pharaohs
From about 4 thousand years ago, the ancient Egyptians designed a kind of wooden locks, requiring a complex mechanism to open them.The aim of these locks was to prevent theft from the houses of the rich, it was about 60 cm long, about 15 cm wide, but it was easy to break, because it was made from wood”.
Locks were made by drilling zigzag cavities inside the lock, and a key was made that protrudes to compensate for those cavities when they enter the lock, thus opening it.
Locks of this kind remained widespread, but as we said, the property was largely insecure because of its fragile material, wood. The situation continued until the nineteenth century, in which one of the American inventors succeeded in obtaining a patent for a type of metal locks, now known as a cylindrical lock, and found everywhere around us .. at the doors of our homes, in bank coffers, and even In the cupboards.
American inventor Linus Yale Jr., born on April 4, 1821, who invented the “locking of the cylindrical handle”, is one of the most common and most common locks in modern times.
Linus was born in New York to an immigrant father from North Wales. In his beginnings he was interested in the arts, especially painting, in 1850; his father died, so Linus had to give up his dream, and run a business for his family.
His deceased father owned a shop specializing in the sale of locks, at the time; all locks were easy to open, and therefore did not provide the necessary security for property and houses, and was easily penetrated by thieves, Linus thought of a way to solve the problem, and decided to open history books He sees the designs of the old locks, until he reached a design that can be used .. The design of the wooden pharaonic lock.
Linus made a substantial adjustment to this lock, first thinking about designing a steel cylinder with holes, projections and cavities, placing the cylinder in a steel case, and then placing the design inside a steel lock, so that the protruding part is the key from which the key enters. .
After that, he matched the projections, cavities and openings in the cylinder on a flat key, placed in front of each protrusion in the cylinder a cavity in the key, and in front of each hole in the cylinder protruding into the key, thus; The key assigned to each lock; it is impossible to unlock the lock unless it is fully removed with the door or safe.
In 1865, after 15 years of working on and developing cylindrical locks, Linus Yale Jr. received a US patent for the cylindrical lock, then improved and made double locks, which needed two keys to open.
Two years after he received the patent, Linus and a friend founded a locksmith company, starting with 35 employees.In one year, the company grew and became the first manufacturer of cylindrical locks in the United States, and increased the number of employees to 12 thousand employees.
In 1868, one year after the founding of the company, Linus went on a business trip to negotiate the sale of locks for a skyscraper, and during the discussions was accompanied by a heart attack; he died at the age of 47, after a real revolution .. Locksmithing.