GB869873A - Improvements in vibrating reed relays - Google Patents
Improvements in vibrating reed relaysInfo
- Publication number
- GB869873A GB869873A GB3101459A GB3101459A GB869873A GB 869873 A GB869873 A GB 869873A GB 3101459 A GB3101459 A GB 3101459A GB 3101459 A GB3101459 A GB 3101459A GB 869873 A GB869873 A GB 869873A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- reed
- casing
- tag
- piezo
- 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
- 235000014676 Phragmites communis Nutrition 0.000 title abstract 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
- G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
869,873. Piezo-electric switches. WESTREX CO. Ltd. Sept. 11, 1959, No. 31014/69. Class 38 (5). A tubular vibrating reed a carries a springy wire loop contact j for co-operation with fixed contacts k and is clamped at its other end to a part b<SP>1</SP> bent up from a metal plate coupling member b which is fixed to a casing o by screws c. The member b is bent as shown to hold the reed a in a socket b<SP>2</SP> and its end b<SP>4</SP> engages one end of a piezo-electric body e. The other end of body e is pressed downwards by a flat spring g held between blocks q carried by casing o and adjustable by a screw f. The cross-piece of a wire frame s acts as a pivot between the body e and a raised part h of casing o, and is adjustable along the length of body e by means of a screw i. The wire forming contact loop j extends inside reed a and is connected to member b which has a terminal tag n. An alternating drive voltage of appropriate frequency is connected to body e via tag n and member b on the one side, and a tag m, screw i and frame s on the other side. Screw i provides a fine adjustment of the frequency of vibration of reed a. Specification 819,907 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3101459A GB869873A (en) | 1959-09-11 | 1959-09-11 | Improvements in vibrating reed relays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3101459A GB869873A (en) | 1959-09-11 | 1959-09-11 | Improvements in vibrating reed relays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB869873A true GB869873A (en) | 1961-06-07 |
Family
ID=10316620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3101459A Expired GB869873A (en) | 1959-09-11 | 1959-09-11 | Improvements in vibrating reed relays |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB869873A (en) |
-
1959
- 1959-09-11 GB GB3101459A patent/GB869873A/en not_active Expired
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