Bored cylindrical lock
A bored cylindrical lock is one in which two holes are bored, perpendicular to one another, into the door. A large hole is bored into the door face and a smaller crossbore hole is bored into the door edge, as opposed to a mortise lock prep cut into the edge of the door. Typically, the face hole is sized from 1.5 inches to 2.125 inches (3.8 to 5.4 cm) and is centered at 2.375 inches or 2.75 inches (6.0 cm or 7.0 cm) from the leading edge of the door, this distance is referred to as the backset. Other, less popular, backsets are at 3.75 and 5 inches (9.5 and 12.7 cm). Residential doors are normally prepared for a 2.375 inch (6.0 cm) backset and commercial doors at a 2.75 inch (7 cm) backset.
History
The cylindrical lock was invented by Walter Schlage in 1909.
The bored cylindrical lock arose from a need for a more cost-effective method of locking doors. The previous norm, the mortise lock, is a more complex device, and its higher manufacturing cost as well as its more labor intensive installation make the bored cylindrical lock an ideal substitute, both in price and functionality.
Currently
The great majority of locks now in use on residences in North America are a variation of the cylindrical lock and are known as tubular chassis locks. Generally, they are not as strong as a cylindrical lock.
External links
- How Locks Work from How Stuff Works
- Luggage Locks Luggage Locks: Product information, price comparisons and user reviews and ratings for Luggage Locks.
- Luggage Locks, Luggage Straps & Luggage Labels Luggage and suitcase accessories including luggage straps, locks and tags at ifsogo.com The Travel Accessories Superstore – UK online store.
- Pacsafe StrapSafe - Secure TSA Luggage Strap - Packyourbags Travel Pacsafe StrapSafe - Secure TSA Luggage Strap - Locks which allow USA airport Luggage locks are often damaged during the search process as custom
- Real EasyCheck Big Digit Luggage Locks; Set of 2 reviews in This product is 100% recommended to a friend. Find more Luggage reviews at Buzzillions.com, where every product has a review.
- TSA Locks Means No More Cut Luggage by Airport Security Luggage lock, luggage accessory, travel accessory.
- YouTube - pick/bypass luggage lockslol im the dummey that did not know this, iv only Searchalert (TSA) Recognized & Accepted Luggage Lock #16247: The new SearchAlert Security window changes color from Green to Red when the TSA secured access
- The National Geographic Online Store - TSA Luggage Locks TSA Luggage Locks - New locks keep your luggage contents safe from theft but searchable by TSA agents.
- Travel Babel: Luggage Lock Uses Words, Not Numbers I should remember my PIN codes and combinations for luggage locks, bike locks and miscellaneous padlocks, to say nothing of numerous phone numbers,
- Lok-it.com TSA Search Alert Luggage Lock luggage lock, TSA, search alert, combination padlocks, solid brass padlocks, key safe, keysafe, real estate key lock box, key storage, key storage box,
- BUSINESS TRAVEL: ON THE ROAD; Luggage Lock Program Not Without a On their way home, they used the locks to secure their checked bags at the Phoenix airport. When they retrieved the luggage at the Newark airport,
