GB170582A - Improved means for operating signals or for producing other electrical effects between two bodies in relative movement - Google Patents
Improved means for operating signals or for producing other electrical effects between two bodies in relative movementInfo
- Publication number
- GB170582A GB170582A GB2778721A GB2778721A GB170582A GB 170582 A GB170582 A GB 170582A GB 2778721 A GB2778721 A GB 2778721A GB 2778721 A GB2778721 A GB 2778721A GB 170582 A GB170582 A GB 170582A
- Authority
- GB
- United Kingdom
- Prior art keywords
- producing
- circuit
- electrical effects
- operating signals
- bodies
- 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
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000004075 alteration Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
170,582. Ges f³r Drahtlose Telegraphie, and Gewecke, H. Oct. 22, 1920, [Convention date]. Track apparatus actuating signals on and other than on trains.-Relates to apparatus, for operating signals or producing other electrical effects by the approach of two relatively moving objects, especially suitable for use on trains. One of the objects A carries two circuits, a primary circuit 2 excited by an alternating- current generator 1, and a coupled secondary circuit 3 the frequency of which is varied by the approach of apparatus mounted on the other object B, the consequent alteration of energy absorption by the circuit 3 causing the actuation of a signal on the object A. In the arrangement shown, when a condenser plate 5 carried by the moving object B arrives opposite the plates 4, included in the secondary circuit 3, the latter is brought into resonance with the primary circuit 2, and the increased induced energy operates a signal. In a modification, a similar effect is obtained by substituting an earth connection for one of the plates 4 and earthing the plate 5.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB170582A true GB170582A (en) | 1922-04-27 |
Family
ID=1740766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2778721A Expired GB170582A (en) | 1921-10-19 | Improved means for operating signals or for producing other electrical effects between two bodies in relative movement |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB170582A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2779874A (en) * | 1950-10-18 | 1957-01-29 | Electro Card Inc | Electronic lock |
| US3134254A (en) * | 1961-01-24 | 1964-05-26 | Joseph D Richard | Secure locking system |
-
1921
- 1921-10-19 GB GB2778721A patent/GB170582A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2779874A (en) * | 1950-10-18 | 1957-01-29 | Electro Card Inc | Electronic lock |
| US3134254A (en) * | 1961-01-24 | 1964-05-26 | Joseph D Richard | Secure locking system |
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