Mass Enterprise Co Ltd Chinese manufacturer and supplier of disc tumbler locking devices and parts for cash and mail boxes.
Midas Eastern Machine Tools Pvt. Ltd. Manufactures multi drilling and tapping heads, machines for making and processing keys for disc and pin tumbler locks. Includes product details and contact information.
Wikipedia Links
Pin Tumbler Lock The pin tumbler lock is a lock mechanism that utilizes a group of pins of varying lengths to prevent opening the lock without the correct key. Pin tumblers are most commonly employed in cylinder locks, but may also be found in tubular or radial locks.
History:
Disc Tumbler Lock A disc tumbler lock or wafer lock is a type of lock that utilizes a set of flat discs to prevent the lock from opening unless the correct key is inserted.
Design:
Tubular Pin Tumbler Lock A tubular pin tumbler lock is a variety of pin tumbler lock in which the pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape. Locks of this type are commonly seen on bicycle locks and vending machines.
Design:
To be written. The author of the illustrations at right requests .
Lever Tumbler Lock A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock. In the simplest of these, lifting the tumbler above a certain height will allow the bolt to slide past.
'Double acting' Lever tumbler locks were invented in 1778 by Robert Barron of England. These required the lever to be lifted to a certain height by having a slot cut in the lever. So lifting the lever too far was as bad as not lifting the lever far enough.