GB232717A - Improvements in and relating to door locks - Google Patents
Improvements in and relating to door locksInfo
- Publication number
- GB232717A GB232717A GB296324A GB296324A GB232717A GB 232717 A GB232717 A GB 232717A GB 296324 A GB296324 A GB 296324A GB 296324 A GB296324 A GB 296324A GB 232717 A GB232717 A GB 232717A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bolt
- pawl
- stop
- door
- arm
- 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
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/18—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position
- E05B63/20—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position released automatically when the wing is closed
- E05B63/202—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position released automatically when the wing is closed a latch bolt being initially retained in an intermediate position and subsequently projected to its full extent when the wing is closed
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
232,717. Johnston, G. W. P. Feb. 5, 1924. Latches, sliding, and preventing opercation of. - A latch bolt is held in intermediate or latching position by a pawl pivoted thereon and engaging a stop on the casing. Slamming of the door releases the pawl and allows the latch bolt to shoot into locking position. The follower retracts the bolt by engaging the pawl, which it also causes to reengage the stop. The bolt a with a bevelled conical nose a<1> has a recess in which is pivoted the pawl k, i, a hook of which normally engages a stop s on the plate q fixed to the casing, to hold the bolt in latching position. When the door is slammed ,the bolt a is pushed inwards by the striking plate, releasing the pawl from the stop s and allowing it to be rocked by the spring o so that the bolt can shoot fullv out into the staple to secure the door. The bolt mav be blocked in this position by an arm v turned by a square key to engage a recess u. The arm v may be formed upon the barrel 19 of a lock 20 as shown in Fig. 7. The bolt is withdrawn by the follower l which engages the arm k of the pawl and pushes it against a stop x on the bolt and also causes the pawl hook to re-engage the stop s. The pawl hook may be disengaged from the stop s, on slamming the door, by gravity, or the blade spring o shown in Fig. 2 or the spiral spring o<x> shown in Fig. 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB296324A GB232717A (en) | 1924-02-05 | 1924-02-05 | Improvements in and relating to door locks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB296324A GB232717A (en) | 1924-02-05 | 1924-02-05 | Improvements in and relating to door locks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB232717A true GB232717A (en) | 1925-04-30 |
Family
ID=9749318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB296324A Expired GB232717A (en) | 1924-02-05 | 1924-02-05 | Improvements in and relating to door locks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB232717A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2676829A (en) * | 1947-11-10 | 1954-04-27 | Sterner Bernard | Lock |
| US2812204A (en) * | 1955-02-14 | 1957-11-05 | Midwest Mfg Corp | Door lock |
| US5516160A (en) * | 1994-04-11 | 1996-05-14 | Master Lock Company | Automatic deadbolts |
-
1924
- 1924-02-05 GB GB296324A patent/GB232717A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2676829A (en) * | 1947-11-10 | 1954-04-27 | Sterner Bernard | Lock |
| US2812204A (en) * | 1955-02-14 | 1957-11-05 | Midwest Mfg Corp | Door lock |
| US5516160A (en) * | 1994-04-11 | 1996-05-14 | Master Lock Company | Automatic deadbolts |
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