US2559637A - Keyboard controlled telegraph apparatus - Google Patents

Keyboard controlled telegraph apparatus Download PDF

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Publication number
US2559637A
US2559637A US84864A US8486449A US2559637A US 2559637 A US2559637 A US 2559637A US 84864 A US84864 A US 84864A US 8486449 A US8486449 A US 8486449A US 2559637 A US2559637 A US 2559637A
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United States
Prior art keywords
combination
bars
bar
key
lever
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
US84864A
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English (en)
Inventor
Kirchel Alan Arthur
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.)
Creed and Co Ltd
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Creed and Co 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 Creed and Co Ltd filed Critical Creed and Co Ltd
Application granted granted Critical
Publication of US2559637A publication Critical patent/US2559637A/en
Anticipated expiration legal-status Critical
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    • 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
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs

Definitions

  • This invention relates to keyboard controlled telegraph apparatus in which key levers coact with bars to effect the transmission of ycode sig- *nalstoa line circuit or to effect the perforation of atape for subsequent control of the transmission -of such signals.
  • Patent No. 1,988,943 a keyboard mechanism in 'which two sets of permutation members were provided for, actuation under-control of a single keylever,V each set in accordance with a different code combination, and in which means was providedv for operatively associating either of said sets of permutation members with 'further apparatus which it was desired to control.
  • keyY lever referred to is akin to the. shift key lever in a typewriter and actuation of such key lever performs a mechanical operation in the keyboard.
  • a keyboard mechanism for telegraph apparatus comprising a set of character key levers, a first set of combination members, in operative relation to said character key levers, a second set of combination members positioned out of operative Vrelation to said character key levers, a shift key lever, means operative upon the actuation of said shift key lever yfor placing the second set of combination members in and removing the first set of combination members out of operative relation to said character key levers.
  • Fig. 1 is a View in Aelevation of a combination bar of the keyboard mechanism, showing the mechanism for placing. into and out of operative relation With the key-bars, some of which are shown in cross-section.
  • Fig. 2 isa corresponding view of a combination bar ofY another set, the key-bars. not being shown.
  • Fig. 3 is a corresponding View of the universal bar.
  • a keyboard mechanism for the five-unit teleprinter code there are provided two sets of combination bars, five in each set.
  • One of these sets of combination bars, to which the combination bar I, Fig. v1 belongs, is normally supported in position immediately below the key levers of the keyboard. Only those key levers 2 that carry keys having two .symbols thereon are shown in the drawing.
  • Another set of rive combination bars, to which the combination bar 3, Fig. 2 belongs, is Anormally supported in a lower position so that these combination bars are not actuated by any of the keys.
  • a universal 4bar 4, Fig. 3 is supported so as normally to be actuated by any character key lever thekey of which is depressed.
  • the combination bars, such as I and 3, and the universal bar 4 are mounted in racks, of which one only 5, is shown to space them apart and keep them upright. They rest on rollers 6 supported on a base plate 1.
  • the rollers I3 are rotatably mounted on pins 8 fixed to a bar 9, Fig. 1.
  • the combination bars of one set, such as bar I are formed with projections I0, underneath, these projections being formed with a fiat surface of sufficient extent to allow each bar being moved to right or left by a key lever, the projection Ill being bounded on the left in Fig. 1 by a ramp I I. It should be noted however, that bar I is shown in its extreme left hand position so that in this position the right hand key lever 2 will leave the bar I unmoved.
  • the combination bars of the other set such as bar 3, Fig. 2 are formed with similar projections I2 underneath, each projection I2 being bounded lon the right in the drawing by a ramp I3.
  • the combination bars of the last mentioned set rest with the ramps I3 adjacent to the rollers Gvso that the bars are below a level at which they can be operated by the key levers.
  • the bar 9 is linked by a bell crank lever I4 to the shift key lever I5.
  • the bell crank lever I4 When the shift key lever is depressed the bell crank lever I4 is rotated clockwise and moves the link 9 to the left.
  • the rollers 6 move below the ramps II of the projections I on the combination bars I so that these bars drop to a level too low to be operated by the key levers 2.
  • the ramps I3 on projections I2 rise up, the rollers e thus raising the combination bars such as 3 to a level at which they can be operated by key levers 2.
  • the universal bar 4 is supported on the rollers B by projections I6 under the bar, these projections IS having a dat surface underneath of sufcient extent for the bar 4 to remain in operative relation to the key levers 2 in either of the two positions of link 9.
  • the combination bars control a transmitter by means of signal control levers I'I, Fig. l, I8 Fig. 2 and I9 Fig. 3.
  • signal control levers I1 and I8 are similarly linked to the same member of the transmitter or perforator.
  • the signal control levers II, I8 and I9 are linked with the bars I, 3 and 4 respectively by means of notches 20 in the latter so that when combination bar I is lowered by movement of the link 9 the end of control lever I'I no longer engages in the notch 20 in the combination bar and the latter is no longer operatively connected with signal control lever I'I.
  • Corresponding bars I and 3 of the two sets of combination bars are preferablyarranged in juxtaposition the bars of the two sets being arranged alternately to facilitate the operation of the same member of the transmitter by either of the signal control levers I'I, I8.
  • Keyboard mechanism for telegraph apparatus comprising a set of character key levers, a rst set of combination members positioned in operative relation to said character key levers, -a second set of combination members positioned out of operative relation to said character key levers, a shift key lever and means, operative upon actuation of said shift key lever for placing the second set of combination members in and removing the first set of combination members out of operative relation to said character key levers.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US84864A 1948-04-05 1949-04-01 Keyboard controlled telegraph apparatus Expired - Lifetime US2559637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB283257X 1948-04-05

Publications (1)

Publication Number Publication Date
US2559637A true US2559637A (en) 1951-07-10

Family

ID=10273887

Family Applications (1)

Application Number Title Priority Date Filing Date
US84864A Expired - Lifetime US2559637A (en) 1948-04-05 1949-04-01 Keyboard controlled telegraph apparatus

Country Status (4)

Country Link
US (1) US2559637A (fr)
CH (1) CH283257A (fr)
FR (1) FR984178A (fr)
GB (1) GB652113A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684718A (en) * 1950-06-15 1954-07-27 Ibm Card punching machine
US2752414A (en) * 1952-09-16 1956-06-26 Teletype Corp Answer back device for printing telegraph systems
US2859276A (en) * 1955-04-26 1958-11-04 Joseph J Saykay Apparatus for key operated mechanisms
US2874369A (en) * 1953-08-20 1959-02-17 Sperry Rand Corp Machine for recording on magnetic tape
US2946850A (en) * 1957-09-04 1960-07-26 Sperry Rand Corp Decoding mechanism for multiple codes
US2980228A (en) * 1954-09-28 1961-04-18 Int Standard Electric Corp Selective blocking device for office typewriter keyboard
US3226477A (en) * 1963-06-24 1965-12-28 Teletype Corp Code generating mechanism
US3234331A (en) * 1961-04-01 1966-02-08 Int Standard Electric Corp Key sender for teleprinters and dataprocessing input devices, or the like
US3302764A (en) * 1959-10-14 1967-02-07 Ibm Keyboard encoder with plural and different sets of code members
US3306417A (en) * 1964-05-04 1967-02-28 Olivetti & Co Spa Keyboard mechanism for generating code with selectable code member sets
US3317020A (en) * 1964-07-30 1967-05-02 Siemens Ag Keyboard providing different unrelated codes in response to caseshift operation
US3324985A (en) * 1966-01-14 1967-06-13 Ibm Encoder
US3412204A (en) * 1963-08-27 1968-11-19 Siemens Ag Apparatus for the change-over of the functional assignment of dually utilized keys
US3617628A (en) * 1968-01-11 1971-11-02 Int Standard Electric Corp Arrangement for automatically inserting type group shift signals in keyboard transmitters

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1974307A (en) * 1932-09-02 1934-09-18 Creed & Co Ltd Case signaling mechanism for keyboard controlled telegraph apparatus
US1988943A (en) * 1933-07-07 1935-01-22 Creed & Co Ltd Keyboard mechanism for telegraph apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1974307A (en) * 1932-09-02 1934-09-18 Creed & Co Ltd Case signaling mechanism for keyboard controlled telegraph apparatus
US1988943A (en) * 1933-07-07 1935-01-22 Creed & Co Ltd Keyboard mechanism for telegraph apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684718A (en) * 1950-06-15 1954-07-27 Ibm Card punching machine
US2752414A (en) * 1952-09-16 1956-06-26 Teletype Corp Answer back device for printing telegraph systems
US2874369A (en) * 1953-08-20 1959-02-17 Sperry Rand Corp Machine for recording on magnetic tape
US2980228A (en) * 1954-09-28 1961-04-18 Int Standard Electric Corp Selective blocking device for office typewriter keyboard
US2859276A (en) * 1955-04-26 1958-11-04 Joseph J Saykay Apparatus for key operated mechanisms
US2946850A (en) * 1957-09-04 1960-07-26 Sperry Rand Corp Decoding mechanism for multiple codes
US3302764A (en) * 1959-10-14 1967-02-07 Ibm Keyboard encoder with plural and different sets of code members
US3234331A (en) * 1961-04-01 1966-02-08 Int Standard Electric Corp Key sender for teleprinters and dataprocessing input devices, or the like
US3226477A (en) * 1963-06-24 1965-12-28 Teletype Corp Code generating mechanism
US3412204A (en) * 1963-08-27 1968-11-19 Siemens Ag Apparatus for the change-over of the functional assignment of dually utilized keys
US3306417A (en) * 1964-05-04 1967-02-28 Olivetti & Co Spa Keyboard mechanism for generating code with selectable code member sets
US3317020A (en) * 1964-07-30 1967-05-02 Siemens Ag Keyboard providing different unrelated codes in response to caseshift operation
US3357534A (en) * 1964-07-30 1967-12-12 Siemens Ag Keyboard capable of producing either of two different codes
US3324985A (en) * 1966-01-14 1967-06-13 Ibm Encoder
US3617628A (en) * 1968-01-11 1971-11-02 Int Standard Electric Corp Arrangement for automatically inserting type group shift signals in keyboard transmitters

Also Published As

Publication number Publication date
FR984178A (fr) 1951-07-03
GB652113A (en) 1951-04-18
CH283257A (fr) 1952-05-31

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