GB237290A - Improvements in or relating to impulse transmitters for use in telephone or like systems - Google Patents
Improvements in or relating to impulse transmitters for use in telephone or like systemsInfo
- Publication number
- GB237290A GB237290A GB18509/25A GB1850925A GB237290A GB 237290 A GB237290 A GB 237290A GB 18509/25 A GB18509/25 A GB 18509/25A GB 1850925 A GB1850925 A GB 1850925A GB 237290 A GB237290 A GB 237290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impulse
- telephone
- relating
- systems
- transmitters
- 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
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
-
- 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
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
- H04M1/34—Lost-motion or other arrangements for ensuring a pause between successive digit transmissions
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Cash Registers Or Receiving Machines (AREA)
- Telephone Function (AREA)
- Transmission Devices (AREA)
Abstract
237,290. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Obergfell, H. F.). May 15, 1924, [Convention date]. Drawings to Specification. Impulse-transmitters of the dial type are provided with a friction coupling which prevents the impulse cam from running ahead of the finger plate, and with a resilient stop which brakes the motion of the impulsing mechanism just before the normal position is reached. The invention is described with reference to a construction of impulse-transmitter identical with that described in Specification 234,036 which claims other features thereof. Specifications 135,416 and 226,152 also are referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US234036XA | 1924-05-15 | 1924-05-15 | |
US599575XA | 1924-05-15 | 1924-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB237290A true GB237290A (en) | 1925-10-14 |
Family
ID=26697092
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18509/25A Expired GB237290A (en) | 1924-05-15 | 1924-07-14 | Improvements in or relating to impulse transmitters for use in telephone or like systems |
GB16899/24A Expired GB234036A (en) | 1924-05-15 | 1924-07-14 | Improvements in or relating to impulse transmitters for use in telephone or like systems |
GB11206/30A Expired GB352469A (en) | 1924-05-15 | 1930-04-08 | Improvements in or relating to impulse transmitters for use in telephone or like systems |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16899/24A Expired GB234036A (en) | 1924-05-15 | 1924-07-14 | Improvements in or relating to impulse transmitters for use in telephone or like systems |
GB11206/30A Expired GB352469A (en) | 1924-05-15 | 1930-04-08 | Improvements in or relating to impulse transmitters for use in telephone or like systems |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE343067A (en) |
FR (2) | FR599575A (en) |
GB (3) | GB237290A (en) |
-
1924
- 1924-07-14 GB GB18509/25A patent/GB237290A/en not_active Expired
- 1924-07-14 GB GB16899/24A patent/GB234036A/en not_active Expired
-
1925
- 1925-05-14 FR FR599575D patent/FR599575A/en not_active Expired
-
1927
- 1927-06-21 BE BE343067D patent/BE343067A/xx unknown
-
1930
- 1930-04-08 GB GB11206/30A patent/GB352469A/en not_active Expired
- 1930-09-19 FR FR39059D patent/FR39059E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR599575A (en) | 1926-01-15 |
BE343067A (en) | 1927-07-30 |
FR39059E (en) | 1931-08-25 |
GB234036A (en) | 1925-10-14 |
GB352469A (en) | 1931-07-08 |
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