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A wheel hub with a castellated nut secured in the center using a cotter pin to prevent it from unscrewing. A positive locking device is a device used in conjunction with a fastener in order to positively lock the fastener.
This auxiliary locking device usually consists of a spring-loaded bolt of some type, held in check by a bracket or cable that is rigged to release the mechanism in a burglary attempt. The device will either block the main boltwork from retracting or block the door from opening.
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 first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
Loved ones are remembering an Alabama dad, veteran and husband after he was murdered on New Year’s Eve. Earnest Christion Jr. was killed in a stabbing at a Birmingham residence on Tuesday, Dec ...
How To Make My New Year’s Eve Hot Crab Dip. To make four servings, you’ll need: Nonstick cooking spray or softened butter. 8 ounces cream cheese, softened
Police have issued an e-fit image as part of a renewed appeal to identify a man found dead in a canal 14 years ago. The man's body was found in the Fazeley Canal in Erdington, Birmingham, at about ...
The underside of a disc tumbler lock A key for a disc tumbler lock. A disc tumbler or disc detainer lock is a lock composed of slotted rotating detainer discs. The lock was invented by Finnish founder of Abloy, Emil Henriksson (1886–1959) in 1907 and first manufactured under the Abloy brand in 1918.