GB389820A - Improvements in or relating to automatic switches for use in telephone or like systems - Google Patents

Improvements in or relating to automatic switches for use in telephone or like systems

Info

Publication number
GB389820A
GB389820A GB26380/31A GB2638031A GB389820A GB 389820 A GB389820 A GB 389820A GB 26380/31 A GB26380/31 A GB 26380/31A GB 2638031 A GB2638031 A GB 2638031A GB 389820 A GB389820 A GB 389820A
Authority
GB
United Kingdom
Prior art keywords
shaft
springs
spring
switch
controlled
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
GB26380/31A
Other languages
English (en)
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of GB389820A publication Critical patent/GB389820A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/14—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection
    • H01H67/16—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection one motion being rotary and the other being parallel to the axis of rotation, e.g. Strowger or "up and around" switches

Landscapes

  • Transmission Devices (AREA)
  • Structure Of Telephone Exchanges (AREA)
GB26380/31A 1930-09-29 1931-09-21 Improvements in or relating to automatic switches for use in telephone or like systems Expired GB389820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US485035A US1889240A (en) 1930-09-29 1930-09-29 Switch mechanism

Publications (1)

Publication Number Publication Date
GB389820A true GB389820A (en) 1933-03-21

Family

ID=23926680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26380/31A Expired GB389820A (en) 1930-09-29 1931-09-21 Improvements in or relating to automatic switches for use in telephone or like systems

Country Status (4)

Country Link
US (1) US1889240A (enrdf_load_stackoverflow)
BE (1) BE383003A (enrdf_load_stackoverflow)
FR (1) FR724391A (enrdf_load_stackoverflow)
GB (1) GB389820A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120036875B (zh) * 2025-04-23 2025-08-15 普密特(成都)医疗科技有限公司 一种外刀组件及弯曲角度可调的脊柱刨刀

Also Published As

Publication number Publication date
FR724391A (fr) 1932-04-26
US1889240A (en) 1932-11-29
BE383003A (enrdf_load_stackoverflow) 1931-10-31

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