GB335870A - Improvements in key-locks for use in connection with railway signals, points and the like - Google Patents
Improvements in key-locks for use in connection with railway signals, points and the likeInfo
- Publication number
- GB335870A GB335870A GB2779/30A GB277930A GB335870A GB 335870 A GB335870 A GB 335870A GB 2779/30 A GB2779/30 A GB 2779/30A GB 277930 A GB277930 A GB 277930A GB 335870 A GB335870 A GB 335870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- key
- lug
- lock
- bit
- points
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L11/00—Operation of points from the vehicle or by the passage of the vehicle
- B61L11/02—Operation of points from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track
- B61L11/04—Trailable point locks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Lock And Its Accessories (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
335,870. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Wheatley, W. G., Collett, A. C., and Saxby & Farmer (India), Ltd.). Feb. 21, 1929, [Convention date]. Hand levers; signalling -instruments.-In keylock apparatus of the Annett or Heppertransmitter type for use in connection with railway signals or points wherein the key is formed with a lug on its shank so that it can only be inserted in the lock corresponding thereto by reason of the shape of the aperture, the lug effects a locking operation additional to that of the key bit. The key may be of the Hepper type released at a distance. Fig. 6 shows the key which is provided with bits 8 to engage the levers 6 of the lock, Fig. 1, and the bit 16 to actuate the lock bolt 3. The lug 14, when the key has been inserted and moved axially after being turned to pass a stop 17, Fig. 3, engages a notch 13 in a rotary tumbler 11 which can then be turned out of contact with a stop lug 10 on the lock bolt 3 to permit the bolt to be moved by the key bit 16. The rotary tumbler 11 is shown mounted on the lock cover 2; this arrangement facilitates conversion of existing locks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN335870X | 1929-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB335870A true GB335870A (en) | 1930-10-02 |
Family
ID=11076491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2779/30A Expired GB335870A (en) | 1929-02-21 | 1930-01-27 | Improvements in key-locks for use in connection with railway signals, points and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB335870A (en) |
-
1930
- 1930-01-27 GB GB2779/30A patent/GB335870A/en not_active Expired
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