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GB522807A - Improvements in impulse senders for telephone systems - Google Patents

Improvements in impulse senders for telephone systems

Info

Publication number
GB522807A
GB522807A GB36777/38A GB3677738A GB522807A GB 522807 A GB522807 A GB 522807A GB 36777/38 A GB36777/38 A GB 36777/38A GB 3677738 A GB3677738 A GB 3677738A GB 522807 A GB522807 A GB 522807A
Authority
GB
United Kingdom
Prior art keywords
dial
pin
screw
shaft
spring
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
GB36777/38A
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.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
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 General Electric Company PLC filed Critical General Electric Company PLC
Priority to GB36777/38A priority Critical patent/GB522807A/en
Priority to US307302A priority patent/US2281994A/en
Publication of GB522807A publication Critical patent/GB522807A/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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses

Landscapes

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

Abstract

522,807. Impulse transmitters. GENERAL ELECTRIC CO., Ltd., and PUCKETTE, C. C. Dec. 17, 1938, No. 36777. [Class 40 (iv)] The shaft 4 of a dial transmitter carries a pin 7, on the toothed wheel 9 as shown, which in the normal position engages a stop on a flat spring member 12 secured at one end 11 to the back member of the dial body and resting at the other end on a screw 14 inserted from the back of the body. By slackening the screw, the engagement with the pin 7 may be released to permit the driving spring to be wound up or unwound for adjustment. The heads of the screws 11 pass loosely through the upper portion of the spring 12 and serve to prevent sideways movement thereof. The pin 7 also prevents rotation of the dial through more than one revolution. The Provisional Specification describes discs of synthetic resin fixed to the shaft and to the dial body to exclude dust.
GB36777/38A 1938-12-17 1938-12-17 Improvements in impulse senders for telephone systems Expired GB522807A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB36777/38A GB522807A (en) 1938-12-17 1938-12-17 Improvements in impulse senders for telephone systems
US307302A US2281994A (en) 1938-12-17 1939-12-02 Impulse sender for use in telephone or like systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36777/38A GB522807A (en) 1938-12-17 1938-12-17 Improvements in impulse senders for telephone systems

Publications (1)

Publication Number Publication Date
GB522807A true GB522807A (en) 1940-06-27

Family

ID=10391102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36777/38A Expired GB522807A (en) 1938-12-17 1938-12-17 Improvements in impulse senders for telephone systems

Country Status (2)

Country Link
US (1) US2281994A (en)
GB (1) GB522807A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL101043C (en) * 1957-04-17

Also Published As

Publication number Publication date
US2281994A (en) 1942-05-05

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