GB198108A - Improvements in master-keyed locks - Google Patents
Improvements in master-keyed locksInfo
- Publication number
- GB198108A GB198108A GB699522A GB699522A GB198108A GB 198108 A GB198108 A GB 198108A GB 699522 A GB699522 A GB 699522A GB 699522 A GB699522 A GB 699522A GB 198108 A GB198108 A GB 198108A
- Authority
- GB
- United Kingdom
- Prior art keywords
- key
- master
- tumblers
- edge
- servant
- 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
- E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
- E05B35/08—Locks for use with special keys or a plurality of keys ; keys therefor operable by a plurality of keys
- E05B35/10—Locks for use with special keys or a plurality of keys ; keys therefor operable by a plurality of keys with master and pass keys
Landscapes
- Lubricants (AREA)
Abstract
198,108. Tourtel, J. M., and Johnston, L. March 9, 1922. Lock mechanism, master-key; tumbler-type.- Tumbler locks are constructed for use with a master key by forming some or all of the tumblers with two operating edges in their thickness, one for co-operation with the master-key and the other with the servant key. The second edge is made by cutting away part of the thickness of the tumblers. Fig. 2 shows a bolt A locked by a gated tumbler D<2> having one edge operable by a servant-key, and another edge, shown shaded, operable by a master-key. Fig. 5 shows tumblers P, Q, R, S, each with an integral part p, q, r, s, providing a second operating edge. The tumblers are operated directly by the bits of a servant-key F<2> and indirectly by the bits of a master-key F<1> acting on the parts p, q, r, s. By having tumblers with edges of different depth, 'but each with a second edge of the same depth, a number of locks with individual keys but all operable by one master-key may be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB699522A GB198108A (en) | 1922-03-09 | 1922-03-09 | Improvements in master-keyed locks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB699522A GB198108A (en) | 1922-03-09 | 1922-03-09 | Improvements in master-keyed locks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB198108A true GB198108A (en) | 1923-05-31 |
Family
ID=9824609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB699522A Expired GB198108A (en) | 1922-03-09 | 1922-03-09 | Improvements in master-keyed locks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB198108A (en) |
-
1922
- 1922-03-09 GB GB699522A patent/GB198108A/en not_active Expired
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