GB308385A - Improvements in dialling apparatus for automatic telephone instruments - Google Patents

Improvements in dialling apparatus for automatic telephone instruments

Info

Publication number
GB308385A
GB308385A GB1628A GB1628A GB308385A GB 308385 A GB308385 A GB 308385A GB 1628 A GB1628 A GB 1628A GB 1628 A GB1628 A GB 1628A GB 308385 A GB308385 A GB 308385A
Authority
GB
United Kingdom
Prior art keywords
automatic telephone
annulus
telephone instruments
dial
dialling apparatus
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
Application number
GB1628A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1628A priority Critical patent/GB308385A/en
Publication of GB308385A publication Critical patent/GB308385A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

308,385. Schierwater, C. A. Jan. 2, 1928. Impulse transmitters of the dial type have an' annular indicator plate, of larger diameter than the dial, carried by a metal disc d1, Fig. 1, or by a spring clip, Fig. 5, which supports it as shown in Fig. 4. In the latter case, the annulus is flexible and in two halves with the meeting edges chamfered. The blank part k may be used for notes or may carry a memorandum pad. The characters on the annulus may be printed, embossed, Braille, luminous, etc.
GB1628A 1928-01-02 1928-01-02 Improvements in dialling apparatus for automatic telephone instruments Expired GB308385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1628A GB308385A (en) 1928-01-02 1928-01-02 Improvements in dialling apparatus for automatic telephone instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1628A GB308385A (en) 1928-01-02 1928-01-02 Improvements in dialling apparatus for automatic telephone instruments

Publications (1)

Publication Number Publication Date
GB308385A true GB308385A (en) 1929-03-28

Family

ID=9696851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1628A Expired GB308385A (en) 1928-01-02 1928-01-02 Improvements in dialling apparatus for automatic telephone instruments

Country Status (1)

Country Link
GB (1) GB308385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563581A (en) * 1951-08-07 Finger-wheel operated call trans

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563581A (en) * 1951-08-07 Finger-wheel operated call trans

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