GB721448A - Telephonograph with answering device - Google Patents
Telephonograph with answering deviceInfo
- Publication number
- GB721448A GB721448A GB22044/51A GB2204451A GB721448A GB 721448 A GB721448 A GB 721448A GB 22044/51 A GB22044/51 A GB 22044/51A GB 2204451 A GB2204451 A GB 2204451A GB 721448 A GB721448 A GB 721448A
- Authority
- GB
- United Kingdom
- Prior art keywords
- message
- uttering
- sept
- record
- recorded
- 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
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
- H04M1/6515—Recording arrangements for recording a message from the calling party using magnetic tape
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
- Electromechanical Clocks (AREA)
Abstract
721,448. Substation equipment. PROMUNDO TREUUNTERNEHMEN. Sept. 20, 1961 [Sept. 23, 1950], No. 22044/61. Drawings to Specification. Class 40 (4). [Also in Group XXXVIII] A telephonograph for answering and recording incoming calls has an endless magnetic tape guided over a series of rollers (see Group XXXVIII) and carrying a spoken message and directions to a caller, who is invited to record a message on a separate recording tape and may then have this recorded message repeated to him. The caller initiates this repetition by uttering a predetermined sequence of high and low-pitched sounds, high and lowpass filters being provided in the telephonegraph circuit, and may then cause the record to be erased by uttering a further low-pitched sound. A further message may be recorded if desired. The two magnetic tapes are driven by a single motor which also drives a set of rotating cams to perform a sequence of switching operations in known fashion.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH721448X | 1950-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB721448A true GB721448A (en) | 1955-01-05 |
Family
ID=4531582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22044/51A Expired GB721448A (en) | 1950-09-23 | 1951-09-20 | Telephonograph with answering device |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE505867A (en) |
CH (1) | CH294519A (en) |
FR (1) | FR1051296A (en) |
GB (1) | GB721448A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183494A (en) * | 1956-08-31 | 1965-05-11 | Sperry Rand Corp | Random access memory systems |
US3183495A (en) * | 1956-08-31 | 1965-05-11 | Sperry Rand Corp | Random access magnetic tape memory systems |
-
0
- BE BE505867D patent/BE505867A/xx unknown
-
1950
- 1950-09-23 CH CH294519D patent/CH294519A/en unknown
-
1951
- 1951-09-17 FR FR1051296D patent/FR1051296A/en not_active Expired
- 1951-09-20 GB GB22044/51A patent/GB721448A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE505867A (en) | |
CH294519A (en) | 1953-11-15 |
FR1051296A (en) | 1954-01-14 |
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