GB864914A - Keyboard transmitter for telegraph signals of the morse type - Google Patents

Keyboard transmitter for telegraph signals of the morse type

Info

Publication number
GB864914A
GB864914A GB3342558A GB3342558A GB864914A GB 864914 A GB864914 A GB 864914A GB 3342558 A GB3342558 A GB 3342558A GB 3342558 A GB3342558 A GB 3342558A GB 864914 A GB864914 A GB 864914A
Authority
GB
United Kingdom
Prior art keywords
bolt
telegraph signals
keyboard transmitter
morse type
coil
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
GB3342558A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3342558A priority Critical patent/GB864914A/en
Priority to US768602A priority patent/US3006997A/en
Publication of GB864914A publication Critical patent/GB864914A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end
    • H04L15/12—Apparatus or circuits at the transmitting end with keyboard co-operating with code-bars

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Steering Controls (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

864,914. Electrically - released switches. EVENSEN, L. Oct. 20, 1958, No. 33425/58. Class 38 (5). [Also in Group XL (b)] A self - holding switch comprises a ferro-magnetic bolt 15<SP>1</SP> which, under pressure on a finger-plate 14, moves axially within the bore of an electromagnet coil 38. Upon contact 39 touching contact 40 the coil is energized so that the bolt is retained in the depressed position. A switch, not shown, later breaks the circuit so that the bolt is returned to its rest position by a spring 35. Specification 858,435 is referred to.
GB3342558A 1958-10-20 1958-10-20 Keyboard transmitter for telegraph signals of the morse type Expired GB864914A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3342558A GB864914A (en) 1958-10-20 1958-10-20 Keyboard transmitter for telegraph signals of the morse type
US768602A US3006997A (en) 1958-10-20 1958-10-21 Keyboard transmitter for telegraph signs of the morse type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3342558A GB864914A (en) 1958-10-20 1958-10-20 Keyboard transmitter for telegraph signals of the morse type

Publications (1)

Publication Number Publication Date
GB864914A true GB864914A (en) 1961-04-12

Family

ID=10352799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3342558A Expired GB864914A (en) 1958-10-20 1958-10-20 Keyboard transmitter for telegraph signals of the morse type

Country Status (1)

Country Link
GB (1) GB864914A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284935A (en) * 1993-12-15 1995-06-21 Tripco Ltd Circuit Breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284935A (en) * 1993-12-15 1995-06-21 Tripco Ltd Circuit Breaker
US5485133A (en) * 1993-12-15 1996-01-16 Tripco Limited Circuit breaker

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