GB542299A - Improvements relating to door and like fastenings - Google Patents
Improvements relating to door and like fasteningsInfo
- Publication number
- GB542299A GB542299A GB1781040A GB1781040A GB542299A GB 542299 A GB542299 A GB 542299A GB 1781040 A GB1781040 A GB 1781040A GB 1781040 A GB1781040 A GB 1781040A GB 542299 A GB542299 A GB 542299A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bolt
- key
- lock
- lever
- bit
- 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
- E05B11/00—Devices preventing keys from being removed from the lock ; Devices preventing falling or pushing out of keys
Landscapes
- Lock And Its Accessories (AREA)
Abstract
542,299. Door fastenings. LINES, A. Dec. 18, 1940, No. 17810. [Class 44] A lock particularly for the inner doors of houses has a key on each face of the door, the keys being permanently retained in the lock to prevent loss, and the lock mechanism arranged so that when the bolt is shot by either key, the other key is rendered inoperative. As shown, the bolt lath 1 has a lever 2 pivoted thereto at 3 and is cut away at 4 to allow upward movement of the lever. The lever is normally depressed by spring 6 against a fixed pin 5, is shaped to provide a pair of opposed shoulders 10, 13 and has a depending projection 7 adapted to engage the right or left side of pin 5 to lock the bolt. The two keys have their stems 8 in alignment and their bits normally in the position 16. The lever is wide enough to co-operate with both bits, and the bolt carries a projection 12 of similar width. In Fig. 2 the near bit 9 has been rotated anti-clockwise to shoot the bolt by co-operation with shoulder 10 after lifting the lever to move projection 7 clear of pin 5, and the lever has dropped to engage projection 7 to the left of pin 5 to lock the bolt in shot position. Rotation of the bit 9 is also arrested by pin 5. With the bolt thus shot, anticlockwise rotation of the other bit is arrested by projection 12, whilst pin 5 arrests clockwise rotation. A similar action occurs when the bolt is shot by bit 11, bit 9 being rendered inoperative. The bolt can therefore be retracted only by the key which shot it, its bit first lifting the lever to release projection 7 and then engaging shoulder 13. With a mortise lock as shown, the keys may be retained by forming the lock with keyholes 14 having horizontal extensions 15 to accommodate the key stems 8, the hole 14 being out of register with the position 16 of the keyhole in the door style. The lock is pushed into place till slots 14 register with 16, the keys are inserted, and the look pushed home to the final out of register position, the stems 8 passing along slot 15. To steady the motion of the key a plate 17 having a tubular bearing 18 for stem 8 is applied to the key before the bow 19 is secured to the stem. When the keys are in place, plates 17 are secured to the door by screws. With a rim lock, the casing may have circular holes through which the key-stems are passed from inside, the key bows being afterwards secured on the stems. Specification 502,369 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1781040A GB542299A (en) | 1940-12-18 | 1940-12-18 | Improvements relating to door and like fastenings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1781040A GB542299A (en) | 1940-12-18 | 1940-12-18 | Improvements relating to door and like fastenings |
Publications (1)
Publication Number | Publication Date |
---|---|
GB542299A true GB542299A (en) | 1942-01-02 |
Family
ID=10101624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1781040A Expired GB542299A (en) | 1940-12-18 | 1940-12-18 | Improvements relating to door and like fastenings |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB542299A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3011817A (en) * | 1958-09-02 | 1961-12-05 | Adams Rite Mfg Company | Narrow stile door lock |
-
1940
- 1940-12-18 GB GB1781040A patent/GB542299A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3011817A (en) * | 1958-09-02 | 1961-12-05 | Adams Rite Mfg Company | Narrow stile door lock |
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