GB531713A - Improvements in locks - Google Patents
Improvements in locksInfo
- Publication number
- GB531713A GB531713A GB22094/39A GB2209439A GB531713A GB 531713 A GB531713 A GB 531713A GB 22094/39 A GB22094/39 A GB 22094/39A GB 2209439 A GB2209439 A GB 2209439A GB 531713 A GB531713 A GB 531713A
- Authority
- GB
- United Kingdom
- Prior art keywords
- key
- balls
- barrel
- magnet
- register
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
- E05B47/0044—Cylinder locks with magnetic tumblers
Landscapes
- Packaging For Recording Disks (AREA)
Abstract
531,713. Magnetically operated locks. EAGLE LOCK CO. July 29, 1939, No. 22094. Convention date, July 29, 1938. [Class 44] In a revolving barrel lock which can only be released by the use of an appropriate magnetic key the outer fixed cylinder 5 and rotatable barrel 9 have longitudinal grooves 16, 17 which register in the locking position shown and house locking balls 18 which prevent rotation of the barrel. The balls are of magnetic material and are movable along the grooves by a magnetic key, the appropriate key moving the balls into register with a circumferential groove 19 so that the barrel may be rotated. The key 20 has a cylindrical portion 21 with an aperture housing a permanent magnet 23 disposed transversely at such a position that the balls are moved with the magnet to release position when the key is inserted. The magnet is hidden and retained by a sleeve 22. The key also has a projection 28 which passes through a lateral slot 29 in the keyhole in an outer cover-plate 11 into a recess in a terminal flange 10 on the barrel which is thereby turned when the key is rotated. The key may also have a projection which passes through a notch 26 of the keyhole. To ensure correct register of the grooves in locking position a spring-pressed ball 30 housed in cylinder 5 snaps into a recess in flange 10. There may be one pair of registering grooves or as shown. two pairs. The Specification also describes a modification with four pairs, the key having two magnets. Locking is effected by the magnet moving the balls out of register with the circumferential groove as the key is withdrawn. Variations of the lock are produced by different positions of circumferential groove and different relative angular dispositions of notch and slot 26, 29, with corresponding positions of magnet and projections on the key. Owing to the smallness of the magnets they must be of highly magnetic material and an alloy of aluminium, nickel and cobalt. known as "Alnico" is stated to be the most suitable.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US531713XA | 1938-07-29 | 1938-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB531713A true GB531713A (en) | 1941-01-09 |
Family
ID=21982375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22094/39A Expired GB531713A (en) | 1938-07-29 | 1939-07-29 | Improvements in locks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB531713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4631939A (en) * | 1982-03-06 | 1986-12-30 | Lowe & Fletcher Limited | Lock with locking elements movable by a magnetic key |
| US5024073A (en) * | 1990-01-16 | 1991-06-18 | Rusken Machine & Tool Service | Bezel lock, key and receiver assembly |
-
1939
- 1939-07-29 GB GB22094/39A patent/GB531713A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4631939A (en) * | 1982-03-06 | 1986-12-30 | Lowe & Fletcher Limited | Lock with locking elements movable by a magnetic key |
| US5024073A (en) * | 1990-01-16 | 1991-06-18 | Rusken Machine & Tool Service | Bezel lock, key and receiver assembly |
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