GB874453A - Frequency-responsive vibrating reed relay and indicator - Google Patents
Frequency-responsive vibrating reed relay and indicatorInfo
- Publication number
- GB874453A GB874453A GB2991858A GB2991858A GB874453A GB 874453 A GB874453 A GB 874453A GB 2991858 A GB2991858 A GB 2991858A GB 2991858 A GB2991858 A GB 2991858A GB 874453 A GB874453 A GB 874453A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- reset
- reeds
- indicator
- coil
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/30—Electromagnetic relays specially adapted for actuation by ac
- H01H51/32—Frequency relays; Mechanically-tuned relays
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
874,453. Electromagnetic relays. DASCHKE, A. W., and SNELL, W. G. Sept. 18, 1958, No. 29918/58. Class 38 (5). [Also in Group XXXVI] A frequency responsive relay and indicator has tuned reeds 18 surrounded by a coil 22 and aligned with markings on a scale 14 behind a window 12 in a casing 10. Parallel to the two end reeds 18 are two magnetic movable contact members 25, 26 with bent-over ends 25a, 26a. When one of the end reeds 18 vibrates it engages the respective end 25a or 26a to move the member 25 or 26 to the right so that it is attracted by a permanent magnet contact 32 or 33. The members 25, 26 are reset by energization of respective coils 34, 35 causing plungers 36 to strike the members 25, 26. Members 25, 26 preferably vibrate at a relatively low frequency so as to be unaffected by the operating-coil flux. In Fig. 4 (not shown), a single coil is adapted to reset both contacts by means of a cross-bar on its plunger. In Figs. 5 and 6 (not shown), the contacts are manually reset by rotation of a knob mounted on a spindle carrying a bar which can engage either contact, a torsion spring normally maintaining the parts in a neutral position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2991858A GB874453A (en) | 1958-09-18 | 1958-09-18 | Frequency-responsive vibrating reed relay and indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2991858A GB874453A (en) | 1958-09-18 | 1958-09-18 | Frequency-responsive vibrating reed relay and indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB874453A true GB874453A (en) | 1961-08-10 |
Family
ID=10299309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2991858A Expired GB874453A (en) | 1958-09-18 | 1958-09-18 | Frequency-responsive vibrating reed relay and indicator |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB874453A (en) |
-
1958
- 1958-09-18 GB GB2991858A patent/GB874453A/en not_active Expired
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