GB220238A - Improvements in signalling devices for railway-switches - Google Patents
Improvements in signalling devices for railway-switchesInfo
- Publication number
- GB220238A GB220238A GB333524A GB333524A GB220238A GB 220238 A GB220238 A GB 220238A GB 333524 A GB333524 A GB 333524A GB 333524 A GB333524 A GB 333524A GB 220238 A GB220238 A GB 220238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- treadle
- detonator
- switch
- depressed
- vehicle
- 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
- B61L9/00—Illumination specially adapted for points, form signals, or gates
- B61L9/02—Illumination specially adapted for points, form signals, or gates non-electric
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
220,238. Westeson, H. Feb. 8, 1924. Detonator apparatus; track apparatus actuating signals other than on trains.-To give warning when a railway switch is passed by a vehicle on a road for which the switch is not set, a pivoted treadle member 3, normally raised by a spring and adapted to be depressed by the flange of a vehicle wheel, is carried by a block 2 secured to the. switch tongue 1. A detonator is carried by a holder 6 on the adjacent rail 4. With the switch open the treadle 3 is clear of the detonator and is depressed idly. With the switch closed, the treadle is over the detonator, which it explodes if depressed by an improperly passing vehicle. The treadle has a depending flange, not shown, to exclude dirt &c. from between the treadle 3 and block 2. The treadle mav be on the rail 4, and the holder 6 on the tongue 1. In a modification, the treadle may carry the detonator which is exploded by co-operation with a fixed member. In place of a detonator signal, the device may be arranged to close the circuit of an electric bell, or operate a mechanical bell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB333524A GB220238A (en) | 1924-02-08 | 1924-02-08 | Improvements in signalling devices for railway-switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB333524A GB220238A (en) | 1924-02-08 | 1924-02-08 | Improvements in signalling devices for railway-switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB220238A true GB220238A (en) | 1924-08-14 |
Family
ID=9756360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB333524A Expired GB220238A (en) | 1924-02-08 | 1924-02-08 | Improvements in signalling devices for railway-switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB220238A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2648152A1 (en) * | 1989-06-12 | 1990-12-14 | Oris Ind Cie | Process for the detection and/or identification of nucleic acids by amplification and hybridisation in solution, and its applications |
| US7022897B2 (en) | 1998-11-02 | 2006-04-04 | Monsanto Technology Llc | Polynucleotides encoding Δ-endotoxins toxic to lepidoptera and coleoptera, and method of use |
-
1924
- 1924-02-08 GB GB333524A patent/GB220238A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2648152A1 (en) * | 1989-06-12 | 1990-12-14 | Oris Ind Cie | Process for the detection and/or identification of nucleic acids by amplification and hybridisation in solution, and its applications |
| US7022897B2 (en) | 1998-11-02 | 2006-04-04 | Monsanto Technology Llc | Polynucleotides encoding Δ-endotoxins toxic to lepidoptera and coleoptera, and method of use |
| US7429454B2 (en) | 1998-11-02 | 2008-09-30 | Monsanto Technology Llc | DNA probes useful in detecting δ-endotoxin-encoding sequences and uses thereof |
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