GB826100A - Telegraph apparatus - Google Patents

Telegraph apparatus

Info

Publication number
GB826100A
GB826100A GB2450/58A GB245058A GB826100A GB 826100 A GB826100 A GB 826100A GB 2450/58 A GB2450/58 A GB 2450/58A GB 245058 A GB245058 A GB 245058A GB 826100 A GB826100 A GB 826100A
Authority
GB
United Kingdom
Prior art keywords
box
tape
apertures
duct
pressure
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
GB2450/58A
Inventor
Erling Led
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.)
DET STORE NORDISKE TELEGRAF SE
Original Assignee
DET STORE NORDISKE TELEGRAF SE
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 DET STORE NORDISKE TELEGRAF SE filed Critical DET STORE NORDISKE TELEGRAF SE
Publication of GB826100A publication Critical patent/GB826100A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/06—Tape or page guiding or feeding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

826,100. Telegraph transmitters. DET STORE NORDISKE TELEGRAF-SELSKAB A.S. Jan. 24, 1958 [Feb. 1, 1957], No. 2450/58. Class 40 (3). In telegraph apparatus controlled by a perforated tape travelling during operation along a guide 14 on the outside of a box 12, closed except for a few small apertures, and containing the feeding and sensing mechanism co-operating with the perforations in the tape, the pressure in the box 12 is maintained at a pressure above atmospheric to prevent access of dust and small tape particles to the enclosed mechanism. The box 12 is closed except for an elongated aperture 18 for a tape-feed wheel 20 and apertures 22 for the sensing pins associated with corresponding apertures or recesses in a tape arm 24 engaging in the guideway 14 during the operation of the apparatus. The pressure in the box 12 is maintained by a fan 28 driven by the motor 26 and connected via outlet 32, duct 34 and aperture 36 to the interior of the box 12. An air filter comprising steel wool 40 is disposed behind a narrowed portion 38 in the duct 34. If the amount of air discharged at the apertures 18, 22 is such that the air flow is insufficient for cooling the motor 26, an opening 42 in the duct 34 is associated with an adjustable damper (not shown) to allow increased air flow.
GB2450/58A 1957-02-01 1958-01-24 Telegraph apparatus Expired GB826100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK826100X 1957-02-01

Publications (1)

Publication Number Publication Date
GB826100A true GB826100A (en) 1959-12-23

Family

ID=8153081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2450/58A Expired GB826100A (en) 1957-02-01 1958-01-24 Telegraph apparatus

Country Status (2)

Country Link
FR (1) FR1190974A (en)
GB (1) GB826100A (en)

Also Published As

Publication number Publication date
FR1190974A (en) 1959-10-16

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