GB585525A - Improvements in or relating to electrical contact-making devices - Google Patents

Improvements in or relating to electrical contact-making devices

Info

Publication number
GB585525A
GB585525A GB475045A GB475045A GB585525A GB 585525 A GB585525 A GB 585525A GB 475045 A GB475045 A GB 475045A GB 475045 A GB475045 A GB 475045A GB 585525 A GB585525 A GB 585525A
Authority
GB
United Kingdom
Prior art keywords
levers
sets
spring
centre
contacts
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
GB475045A
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.)
Ericsson Telephones Ltd
Original Assignee
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 Ericsson Telephones Ltd filed Critical Ericsson Telephones Ltd
Priority to GB475045A priority Critical patent/GB585525A/en
Publication of GB585525A publication Critical patent/GB585525A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric

Landscapes

  • Telephone Set Structure (AREA)

Abstract

585,525. Displaying. ERICSSON TELEPHONES, Ltd., and CROWE, D. C. Feb. 26, 1945, No. 4750. [Class 3 (i)] [Also in Groups XXXVII and XXXVIII] In a display mechanism having a rotary member 1 adapted to be brought into a selected position, the member 1 has a cam groove 2 which engages studs carried by levers A-E which operate a plurality of spring-sets 10. The rotatory member 1 may be driven by the stepby-step mechanism described in Specification 583,715, [Group XXIV], and as shown, can take up 32 different positions, thereby setting the spring-sets 10 in a like number of different combinations as the studs move from the high parts 3 to the low parts 4 of the cam grooves; additionally the member 1 may manually be moved clockwise by a half-stop from each setting without moving the levers. The levers A-E are so pivoted at 5-9 that equal movement is imparted to the spring-sets by the insulating collars 12. Solutions for 16, 15, 14 and 10 position cams operating four levers are also described. The centre-contacts of the spring-sets 10 are connected together and to the step-by-step mechanism, whilst the side-contacts are connected in various combinations to a source of supply. The member 1 is brought to rest when no centre-contact engages a current-carrying side-contact.
GB475045A 1945-02-26 1945-02-26 Improvements in or relating to electrical contact-making devices Expired GB585525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB475045A GB585525A (en) 1945-02-26 1945-02-26 Improvements in or relating to electrical contact-making devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB475045A GB585525A (en) 1945-02-26 1945-02-26 Improvements in or relating to electrical contact-making devices

Publications (1)

Publication Number Publication Date
GB585525A true GB585525A (en) 1947-02-10

Family

ID=9783076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB475045A Expired GB585525A (en) 1945-02-26 1945-02-26 Improvements in or relating to electrical contact-making devices

Country Status (1)

Country Link
GB (1) GB585525A (en)

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