GB652113A - Improvements in or relating to keyboard controlled telegraph apparatus - Google Patents
Improvements in or relating to keyboard controlled telegraph apparatusInfo
- Publication number
- GB652113A GB652113A GB9462/48A GB946248A GB652113A GB 652113 A GB652113 A GB 652113A GB 9462/48 A GB9462/48 A GB 9462/48A GB 946248 A GB946248 A GB 946248A GB 652113 A GB652113 A GB 652113A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bars
- bar
- projections
- rollers
- operative relation
- 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
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
- H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
652,113. Selective punching machines. CREED & CO., Ltd. April 5, 1948, No. 462. [Class 31 (ii)] [Also in Group XL (b)] Keyboard apparatus for perforating a tape in accordance with code signals comprises a first set of longitudinally movable combination bars in operative relation with character key levers, a second set of longitudinally movable members normally out of operative relation with the key levers, and a shift key lever which, on actuation, changes the operative relation of the sets of combination bars and, on release, restores the operative relation between the key levers and the first set of combination bars. As shown in Fig. 1, one set of code combination bars, typified by the bar 1, is held in operative position relative to the key levers 2 by projections 10 formed on the underside of the code bars and resting on rollers 6 rotatable on pins 8 carried by a bar 9, the width of the projections 10 being sufficient to allow the requisite longitudinal movement of the bars 1. When the second set of bars, represented by the bar 3, Fig. 2, is to be moved to the operative position, the clockwise rotation of a bell-crank 14 by the shift key-lever 15 moves the bar 9 to the left so that the lower surfaces of the projections 12 are supported on the rollers 6. Pivoted levers 17, 18 utilized to operate members for controlling the punching operation engage bevelled notches 20 in the bars 1, 3 and the extent of movement of the sets of bars is limited by stops 21 which provide abutments for effecting the raising of the bars 1, 3 when the rollers 6 engage the sloping surfaces 11, 13 of the projections 10, 12. When the lever 15 is released, the bar 9 returns to the right, under the action of a spring (not shown). The sets of bars 1, 3 are supported by slotted guide plates 5. A universal bar, indicated in Fig. 3 (not shown), is provided with projections sufficiently wide to be supported by the rollers 6 during its movement in both positions of the bar 9. Specification 422,134 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB283257X | 1948-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB652113A true GB652113A (en) | 1951-04-18 |
Family
ID=10273887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9462/48A Expired GB652113A (en) | 1948-04-05 | 1948-04-05 | Improvements in or relating to keyboard controlled telegraph apparatus |
Country Status (4)
Country | Link |
---|---|
US (1) | US2559637A (en) |
CH (1) | CH283257A (en) |
FR (1) | FR984178A (en) |
GB (1) | GB652113A (en) |
Families Citing this family (14)
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 |
NL256795A (en) * | 1959-10-14 | |||
DE1131728B (en) * | 1961-04-01 | 1962-06-20 | Standard Elektrik Lorenz Ag | Key levers for teleprinters |
US3226477A (en) * | 1963-06-24 | 1965-12-28 | Teletype Corp | Code generating mechanism |
DE1436714A1 (en) * | 1963-08-27 | 1969-01-09 | Siemens Ag | Method and device for switching the function assignment of keys with double assignment |
CH420219A (en) * | 1964-05-04 | 1966-09-15 | Olivetti & Co Spa | Code keyboard for typewriters, teletypewriters, accounting machines and similar office machines |
DE1235369B (en) * | 1964-07-30 | 1967-03-02 | Siemens Ag | Keypad for teleprinters for generating character fonts |
US3324985A (en) * | 1966-01-14 | 1967-06-13 | Ibm | Encoder |
DE1289866B (en) * | 1968-01-11 | 1969-02-27 | Standard Elektrik Lorenz Ag | Device for the automatic insertion of the type group change characters in hand-held transmitters of telex technology or the like. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB406703A (en) * | 1932-09-02 | 1934-03-03 | Creed & Co Ltd | Improvements in telegraph keyboard controlled apparatus |
GB422134A (en) * | 1933-07-07 | 1935-01-07 | Creed & Co Ltd | Improvements in or relating to keyboard controlled telegraph apparatus |
-
1948
- 1948-04-05 GB GB9462/48A patent/GB652113A/en not_active Expired
-
1949
- 1949-04-01 US US84864A patent/US2559637A/en not_active Expired - Lifetime
- 1949-04-01 CH CH283257D patent/CH283257A/en unknown
- 1949-04-04 FR FR984178D patent/FR984178A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR984178A (en) | 1951-07-03 |
US2559637A (en) | 1951-07-10 |
CH283257A (en) | 1952-05-31 |
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