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GB518847A - Improvements in or relating to telephone sets - Google Patents

Improvements in or relating to telephone sets

Info

Publication number
GB518847A
GB518847A GB2634038A GB2634038A GB518847A GB 518847 A GB518847 A GB 518847A GB 2634038 A GB2634038 A GB 2634038A GB 2634038 A GB2634038 A GB 2634038A GB 518847 A GB518847 A GB 518847A
Authority
GB
United Kingdom
Prior art keywords
telephone sets
relating
dust
plunger
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
GB2634038A
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.)
FREDERICK HOLLIS
GEORGE ROYSON NEWELL
Ericsson Telephones Ltd
Original Assignee
FREDERICK HOLLIS
GEORGE ROYSON NEWELL
Ericsson Telephones Ltd
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 FREDERICK HOLLIS, GEORGE ROYSON NEWELL, Ericsson Telephones Ltd filed Critical FREDERICK HOLLIS
Priority to GB2634038A priority Critical patent/GB518847A/en
Publication of GB518847A publication Critical patent/GB518847A/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)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

518,847. Telephone sets. ERICSSON TELEPHONES, Ltd., NEWELL, G. R., and HOLLIS, F. Sept. 9, 1938. No. 26340. [Class 40 (iv)] In sets of the kind in which the receiver or hand-microtelephone is supported in a fixed cradle and presses down a switch plunger, for example as described in Specifications 399,202 and 504,049. The switch plunger 1 is protected from dust by a hollow cylindrical cap 2 which overlaps the top end of the guide bearing 8 of the plunger and moves in an annular space 5 having a lateral outlet 9 at the bottom for the escape of dust.
GB2634038A 1938-09-09 1938-09-09 Improvements in or relating to telephone sets Expired GB518847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2634038A GB518847A (en) 1938-09-09 1938-09-09 Improvements in or relating to telephone sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2634038A GB518847A (en) 1938-09-09 1938-09-09 Improvements in or relating to telephone sets

Publications (1)

Publication Number Publication Date
GB518847A true GB518847A (en) 1940-03-08

Family

ID=10242129

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2634038A Expired GB518847A (en) 1938-09-09 1938-09-09 Improvements in or relating to telephone sets

Country Status (1)

Country Link
GB (1) GB518847A (en)

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