GB1098333A - Improvements relating to pushbutton-operated switching mechanisms - Google Patents
Improvements relating to pushbutton-operated switching mechanismsInfo
- Publication number
- GB1098333A GB1098333A GB1620165A GB1620165A GB1098333A GB 1098333 A GB1098333 A GB 1098333A GB 1620165 A GB1620165 A GB 1620165A GB 1620165 A GB1620165 A GB 1620165A GB 1098333 A GB1098333 A GB 1098333A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- buttons
- switches
- operated
- depressed
- 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
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Push-Button Switches (AREA)
Abstract
1,098,333. Keysenders. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 5, 1966 [April 15, 1965], No. 16201/65. Heading H4K. In a V.F. keysender, the switch actuating members are arranged parallel to each other and are each pivoted about an axis transverse to the rows of push-buttons. The V.F. signals transmitted may conform to the National 2 out of 5 code. The members consist of hinged plates 4 some of which are directly operated by projections 2B depending from the buttons 2 while others are operated indirectly through the intermediary of one or more cross-bars 6 associated with each row and pivoted about axes parallel to and adjacent to the row. By removing the projections 2B or by cutting slots in the cross-bars so that they cannot be actuated by the leading edges 2C of the pushbuttons when these are depressed, various special frequency combinations can be obtained (Figs. 3A, 3B, 3C not shown). The switches actuated by members 4 may be printed circuittype wafer switches 8, plunger switches (Fig. 1B, not shown), cam-operated spring contacts (Fig. 1A, not shown), or multi-contact spring sets (Fig. 1C, not shown). The return biasing means for the members 4 may be of any conventional form. Preferably the buttons have individual restoring means which may comprise helical springs (Fig. 4A, not shown), multipoled ceramic ring magnets (Figs. 4B and 5, not shown), or a snap-action spring (30, Fig. 4C, not shown). The two latter means provide an initial restraint for the button when it is depressed so that accidental operation is minimized. The under surface of the iron stopplate, against which the ring magnet is normally retained, is provided with a thin membrane which acts as a sound-damping medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1620165A GB1098333A (en) | 1965-04-15 | 1965-04-15 | Improvements relating to pushbutton-operated switching mechanisms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1620165A GB1098333A (en) | 1965-04-15 | 1965-04-15 | Improvements relating to pushbutton-operated switching mechanisms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1098333A true GB1098333A (en) | 1968-01-10 |
Family
ID=10072995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1620165A Expired GB1098333A (en) | 1965-04-15 | 1965-04-15 | Improvements relating to pushbutton-operated switching mechanisms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1098333A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2214166A1 (en) * | 1973-01-12 | 1974-08-09 | Serras Paulet Edouard |
-
1965
- 1965-04-15 GB GB1620165A patent/GB1098333A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2214166A1 (en) * | 1973-01-12 | 1974-08-09 | Serras Paulet Edouard |
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