GB480248A - An improved device for use with the dialling plates of automatic telephone instruments - Google Patents
An improved device for use with the dialling plates of automatic telephone instrumentsInfo
- Publication number
- GB480248A GB480248A GB19477/36A GB1947736A GB480248A GB 480248 A GB480248 A GB 480248A GB 19477/36 A GB19477/36 A GB 19477/36A GB 1947736 A GB1947736 A GB 1947736A GB 480248 A GB480248 A GB 480248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- handle
- plunger
- cap
- spring
- rotary arm
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Set Structure (AREA)
- Push-Button Switches (AREA)
Abstract
480,248. Impulse transmitters. SEGEAL, B. July 13, 1936, No. 19477. [Class 40 (iv)] A dialling finger comprising a plunger carried by a rotary arm and adapted to be engaged with the finger holes is controlled by a handle having a limited sliding movement on the plunger. As shown in the Figure, the plunger i carries a cap k on which is mounted the handle m so that when the handle is depressed it engages flange n on the cap which forces the plunger downwards against the action of a spring l mounted between the upper end of the cap and a bearing h on the rotary arm g. When the handle is pulled upwardly, limited sliding movement between the handle and the cap takes place against the action of spring p arranged between the handle and cap. In modifications, the spring l resisting downward movement of the plunger is omitted, the plunger being rigidly fixed to a resilient rotary arm and being controlled by a handle normally resting on the arm but capable of upward movement on the plunger freely or against spring action. Arrangements for detachably mounting the rotary arm on the dial are similar to those described in Specification 453,826.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET46382D DE658604C (en) | 1936-02-05 | 1936-02-05 | Number switch with facility to block certain call numbers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB480248A true GB480248A (en) | 1938-02-14 |
Family
ID=6540525
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19477/36A Expired GB480248A (en) | 1936-02-05 | 1936-07-13 | An improved device for use with the dialling plates of automatic telephone instruments |
| GB35761/36A Expired GB466338A (en) | 1936-02-05 | 1936-12-30 | Dial switch for use in telephone or like systems adapted to render particular call numbers inoperative |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35761/36A Expired GB466338A (en) | 1936-02-05 | 1936-12-30 | Dial switch for use in telephone or like systems adapted to render particular call numbers inoperative |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2097384A (en) |
| BE (2) | BE419169A (en) |
| CH (1) | CH195492A (en) |
| DE (1) | DE658604C (en) |
| FR (2) | FR811200A (en) |
| GB (2) | GB480248A (en) |
| NL (1) | NL46870C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2525909A (en) * | 1947-11-05 | 1950-10-17 | Joyce Maurice | Automatic telephone dialing instrument |
| US2656417A (en) * | 1948-11-30 | 1953-10-20 | James Kilburg Corp | Automatic telephone dialer |
| US2708221A (en) * | 1950-10-27 | 1955-05-10 | Joyce Maurice | Automatic telephone dialing instrument |
| US2970481A (en) * | 1956-04-05 | 1961-02-07 | Admiral Corp | Tuner control |
-
0
- NL NL46870D patent/NL46870C/xx active
- BE BE417207D patent/BE417207A/xx unknown
- BE BE419169D patent/BE419169A/xx unknown
-
1936
- 1936-02-05 DE DET46382D patent/DE658604C/en not_active Expired
- 1936-07-13 GB GB19477/36A patent/GB480248A/en not_active Expired
- 1936-08-26 FR FR811200D patent/FR811200A/en not_active Expired
- 1936-08-27 CH CH195492D patent/CH195492A/en unknown
- 1936-09-03 US US99285A patent/US2097384A/en not_active Expired - Lifetime
- 1936-12-30 GB GB35761/36A patent/GB466338A/en not_active Expired
-
1937
- 1937-01-07 FR FR816063D patent/FR816063A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR816063A (en) | 1937-07-29 |
| CH195492A (en) | 1938-01-31 |
| FR811200A (en) | 1937-04-08 |
| BE419169A (en) | |
| BE417207A (en) | |
| NL46870C (en) | |
| DE658604C (en) | 1938-04-11 |
| GB466338A (en) | 1937-05-26 |
| US2097384A (en) | 1937-10-26 |
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