US2208348A - Character transmitting device - Google Patents

Character transmitting device Download PDF

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Publication number
US2208348A
US2208348A US179126A US17912637A US2208348A US 2208348 A US2208348 A US 2208348A US 179126 A US179126 A US 179126A US 17912637 A US17912637 A US 17912637A US 2208348 A US2208348 A US 2208348A
Authority
US
United States
Prior art keywords
lever
shaft
cam
arm
key
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 - Lifetime
Application number
US179126A
Other languages
English (en)
Inventor
Thielicke Willi
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US2208348A publication Critical patent/US2208348A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L21/00—Apparatus or local circuits for mosaic printer telegraph systems
    • H04L21/02—Apparatus or local circuits for mosaic printer telegraph systems at the transmitting end

Definitions

  • the invention relatesto theelectric transmislever 39 in engagementwith the lever 39 and sion of characters composed of a number of imhereby to hold pawl 39' inengagement with the age points or currentqimpulsess More particuratchet tooth 42, thus locking the shaft 1 against larly the invention is concerned with transmisrotation.
  • Shaft Il may be provided with a cam 5.
  • sion devices of the kind having key levers each 44 adapted to restore thepawl 39' to normal of which when operated causes such number or when this is out of engagement with tooth'42.
  • a two-armed lever 49 is to sustain 'a two-armed 1 S a 112 5 v diagrammatic aindiparlever 59 against the action of a spring 5
  • Lever 5i) isiattached toan angular lever 22 such discs 2 isshown.
  • Disc 2 is fixedly mounted by a spring 5.6QHLever 22 is jointedly connected 25 on a driving shaft l and.
  • Lever 24 slide 3 fitted with a cam l1 and two projections carries abar 57 that extends along the upper or H], 21.
  • the slide a is of a somewhat oval form free ends of the'arms 1; Thearms Tare hooked and is arranged to encircle a hub 28 of the disc at these ends in order to be engaged by the bar 2.
  • This hub serves to support and guide the slide 51.
  • shaft 20 may be provided with a cam 58 30 3, the proje tions thereof being located in intended to cooperate with a cam 59 of lever 22. grooves formed in the hub.
  • a two-armed lever 38 acting n th leverage I2, 35, 36, 38, 39 by means 50 is to sustain a two-armed lever 39 agains e of bar 34.
  • Lever I2 causes the arm 35 to come action of a spring 40 and has a stud 4
  • Lever 39 is formed lease lever 39.
  • Arm 36 serves to support the rewith a pawl 39 for cooperation with a ratchet leased lever 39.
  • Spring 40 now acts tolift the tooth 42 of shaft l.
  • a spring 43 tends to hold pawl 39' out of engagement with tooth 42
  • cam 44 will restore the pawl 39' into the locking position shown in Fig. 1.
  • cam IIbearing against lever 5 acts to restore the system into the normal state represented in the drawing, spring 4 thus getting tensioned afresh, while projection Ill is moved out of engagement with groove I I.
  • the levers 'I, 8 reassume theirposition of rest immediately after lever 5 is relieved of the pressure by which it has been depressed.
  • cam 55 acts to restore the pawl 50' into the position shown, thus locking this shaft against further rotation.
  • Lever 50 hearing against the lever 22 causes the leverage 22, 23, 24, 51 to reassume the state represented in Fig. 2, the arms 'I thus becoming free of the bar 57 so that now any key lever B can be depressed.
  • the arrangement is such that at this moment the rotating disc 2 shall have turned only through a small part of one revolution.
  • a second lever 6 may then be actuated, since the appertaining slide 3, that is, the slide that belongs to such second key lever and the respective disc 2, cannot engage the groove I I until shaft I has made a completerevolution.
  • the arrangement thus allows of emitting any desired number of characters or combination signals one after another and in immediate succession, each transmission entailing in a sense ani other kept ready by the manipulation of one'of the key levers.
  • the whole of the discs 2 thus constitutes a sortof rotary storage device.
  • Means may be provided whereby after the emission of one character further emission is stopped for some time in order that in the case of a key being depressed too long yet the appertaining character shall be emitted only once.
  • the invention is adapted for use with any teleprinting methods carried out with the aid of a sending keyboard of the kind usual in type writers.
  • a character transmitting device comprising a driving shaft, a number of rotary storage members each representing a definite character, means for clutching each of these storage members to saidshaft, an assembly of key levers, each thereof beingallocated to one of the said storage members, means undercontrol of these key levers for rendering the said clutching means effective, means under control of a depressed key for rendering any one of such clutching means ineffective while rendering another clutching means efiective, and means for rendering anyof such ineffective clutching means effective immediately after" the termination 'of the preceding clutching action.
  • a device having a locking device under control of any one of the key levers and adapted to lock these, except any one thereof that has been operated, during part of one revolution of the driving shaft.
  • a device having a looking device under control of any one of the key levers and adapted-to lock these, except any one thereof that has been operated, such locking device comprising a bar adapted to engage the key levers, a leverage under control of any one of the key leversand joined to thisbar, and a cam shaft adapted to control said leverage during part of one revolution of the driving shaft.
  • a device having a looking device adapted to act upon the driving shaft and means, under control of any one of the key levers, for controlling this locking device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Devices (AREA)
  • Mechanical Operated Clutches (AREA)
US179126A 1936-12-22 1937-12-10 Character transmitting device Expired - Lifetime US2208348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE505051X 1936-12-22

Publications (1)

Publication Number Publication Date
US2208348A true US2208348A (en) 1940-07-16

Family

ID=6546301

Family Applications (1)

Application Number Title Priority Date Filing Date
US179126A Expired - Lifetime US2208348A (en) 1936-12-22 1937-12-10 Character transmitting device

Country Status (4)

Country Link
US (1) US2208348A (enrdf_load_stackoverflow)
FR (1) FR830780A (enrdf_load_stackoverflow)
GB (1) GB505051A (enrdf_load_stackoverflow)
NL (1) NL50885C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR830780A (fr) 1938-08-09
GB505051A (en) 1939-05-04
NL50885C (enrdf_load_stackoverflow)

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