GB718772A - Improvements in or relating to telephone sets - Google Patents

Improvements in or relating to telephone sets

Info

Publication number
GB718772A
GB718772A GB1553A GB1553A GB718772A GB 718772 A GB718772 A GB 718772A GB 1553 A GB1553 A GB 1553A GB 1553 A GB1553 A GB 1553A GB 718772 A GB718772 A GB 718772A
Authority
GB
United Kingdom
Prior art keywords
switch
mercury
relating
receiver
telephone sets
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
GB1553A
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.)
RICHARD GIBBON
Original Assignee
RICHARD GIBBON
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 RICHARD GIBBON filed Critical RICHARD GIBBON
Priority to GB1553A priority Critical patent/GB718772A/en
Publication of GB718772A publication Critical patent/GB718772A/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
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/06—Hooks; Cradles
    • H04M1/08—Hooks; Cradles associated with switches operated by the weight of the receiver or hand-set

Landscapes

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

Abstract

718,772. Sets. GIBBON, R., and SMITH, E. C. March 20, 1953, [Jan. 1, 1953], No. 15/53. Drawings to Specification. Class 40 (4). A telephone handset (or receiver) incorporates a mercury switch operable when the handset (or receiver) is lifted for use, which switch performs the functions normally carried out by the cradle or hook switch. Embodiments are described for table and wall sets. The space above the mercury in the switch may be filled with oil to damp the movements of the mercury and to prevent corrosion thereof.
GB1553A 1953-01-01 1953-01-01 Improvements in or relating to telephone sets Expired GB718772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1553A GB718772A (en) 1953-01-01 1953-01-01 Improvements in or relating to telephone sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1553A GB718772A (en) 1953-01-01 1953-01-01 Improvements in or relating to telephone sets

Publications (1)

Publication Number Publication Date
GB718772A true GB718772A (en) 1954-11-17

Family

ID=9696839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1553A Expired GB718772A (en) 1953-01-01 1953-01-01 Improvements in or relating to telephone sets

Country Status (1)

Country Link
GB (1) GB718772A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899499A (en) * 1959-08-11 Eichwald
DE1085195B (en) * 1959-02-27 1960-07-14 Egon Tischer Handheld telephones with position-dependent mercury switch
EP0027999A1 (en) * 1979-10-26 1981-05-06 Siemens Aktiengesellschaft Telephon-handset for a radio apparatus for mobile use

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899499A (en) * 1959-08-11 Eichwald
DE1085195B (en) * 1959-02-27 1960-07-14 Egon Tischer Handheld telephones with position-dependent mercury switch
EP0027999A1 (en) * 1979-10-26 1981-05-06 Siemens Aktiengesellschaft Telephon-handset for a radio apparatus for mobile use

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