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Rim-mounted (also known as night latch) cylinders; Euro cylinders; Key-in-knobset cylinders; Ingersoll-format cylinders; American, and Scandinavian round mortise cylinders; Scandinavian oval cylinders; There are also standardised cross-sectional profiles for lock cylinders that may vary in length - for example to suit different door thicknesses.
Similarly, mortise locks were used in primary rooms in 1819 at Decatur House in Washington, DC while rim locks were used in closets and other secondary spaces. [3] Warded lock mechanisms are rarely used for mortise locks, owing to the physical depth required. The mortise locks used at Monticello were warded locks. [2]
An antique rim lock installed on a door. A rim lock is a locking device that attaches to the surface of a door. [1] It is the oldest type of lock used in the United Kingdom and Ireland. It is of a basic design using (usually) a single lever and a sliding bolt. Wards can be used for additional security. They are not used where high security is ...
Night latches are usually rim locks [4] and are available as deadlocking (automatically locks once shut) and non-deadlocking versions.. Historically, such locks were intended for use at night-time, hence the name. [5]
The section of a key which enters a lock, which has the key cuts formed in it and which engages the bolt or tumblers of the lock. The bit is called a blade in the case of a cylinder key. [2] Bitting The bitting of a key is the physical arrangement of the bit of the key that engage with the locking mechanism. The bitting instructs a locksmith ...
A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
The previous standard, the mortise lock, needs a lot more wood to be removed from the door to fit its large and intricate lock body inside. With its lower manufacturing cost and ease of installation, the cylindrical lock supplanted the mortise lock as the norm in the United States; Europe, however, did not see widespread adoption, and continues ...
Felter's lock was patented only three years after Linus Yale, Jr. received a patent for his revolutionary pin tumbler mortise lock, considered to be the first pin tumbler lock of the modern era. That lock featured a flat steel key, referred to as a "feather key" because of the marked contrast with the heavy bit keys of the day.
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