GB550518A - Improvements relating to push button switches - Google Patents
Improvements relating to push button switchesInfo
- Publication number
- GB550518A GB550518A GB4855/42A GB485542A GB550518A GB 550518 A GB550518 A GB 550518A GB 4855/42 A GB4855/42 A GB 4855/42A GB 485542 A GB485542 A GB 485542A GB 550518 A GB550518 A GB 550518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bar
- rod
- latching
- latch
- push button
- 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
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/26—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand
- H03J5/32—Stationary tuning circuits or elements selected by push-button
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
550,518. Switches held set and freed mechanically. PLESSEY CO., Ltd. April 13, 1942, No. 4855. Convention date, May 6, 1941. [Class 38 (v)] A push button switch has latching means to hold each push rod "on" until released by actuation of the latching bar, comprising an arm biased into latching position by the same spring which tends to return the bar to "off." In the example, each push rod 14 to be latched has a pivoted member 31 bringing about shoulders 35 on the rod by reason of hook-pieces 32. the other end being bent as shown. A spring 34 bears against a turned up lug 33 on the latch and also serves to return the rod to the front after release. On depressing the key 17, the end of the latch rides over the pointed catch 23 on the latching bar 22 and falls behind it, to hold the rod in depressed position. The bar 22 may be moved laterally to release any of a number of keys that may have been depressed and held similarly by a releasing key: which has no latch but having a bolt with means to ride up a catch similar to 23 to force the bar laterally.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US550518XA | 1941-05-06 | 1941-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB550518A true GB550518A (en) | 1943-01-12 |
Family
ID=21995253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4855/42A Expired GB550518A (en) | 1941-05-06 | 1942-04-13 | Improvements relating to push button switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB550518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1006931B (en) * | 1954-09-08 | 1957-04-25 | Siemens Ag | Push button switch |
-
1942
- 1942-04-13 GB GB4855/42A patent/GB550518A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1006931B (en) * | 1954-09-08 | 1957-04-25 | Siemens Ag | Push button switch |
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