US1814236A - Type printing telegraph apparatus - Google Patents

Type printing telegraph apparatus Download PDF

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Publication number
US1814236A
US1814236A US396606A US39660629A US1814236A US 1814236 A US1814236 A US 1814236A US 396606 A US396606 A US 396606A US 39660629 A US39660629 A US 39660629A US 1814236 A US1814236 A US 1814236A
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US
United States
Prior art keywords
keys
key
type printing
bar
letters
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
US396606A
Other languages
English (en)
Inventor
Wusteney Herbert
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US1814236A publication Critical patent/US1814236A/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
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end
    • H04L17/04—Apparatus or circuits at the transmitting end with keyboard co-operating with code-bars
    • H04L17/06—Contact operating means

Definitions

  • the usual type printing telegraphs employ the same impulse combination for the repro- ,9 duction of two typesbelonging todifi'erent groups, (aletter and a number or a sign)
  • the receiver is set for the reception of letters or numbers and signs.
  • the keys of the keyboard of the transmitter thus carry two characters and there are furthermore provided two changeover keys (generally used simultaneously as spacing keys) for changing the receiver over from letters to numbers and vice-versa.
  • the transmitter Since in this arrangement the transmitter has no provisions for indicating whether the receiver is set for letters or numbers and signs, mistakes may easily occur in the transmission particularly in the case of ineXperienced operators. If, for instance, after the transmission of a number the operator omits to actuate-the change-over key for letters, the receiver prints a series of numbers 2
  • FIG. 1 is a plan of theimproved keyboard
  • Fig. 2 shows the locking bar in elevation in one position
  • Fig. 3 the locking bar in another position, 00 and scarce, and. in Germany new as, 1920.
  • Fig. 4 is a perspective view of the complete operating mechanism.
  • a separate key is provided for each letter and number or sign.
  • the arrangement of the keys is thus much more similar to the standard typewriter keyboard than hitherto.
  • a. further bar according to Figs. 2 and 3, which is adapted to be operated by the change-over keys for letters or numbers and signs. This bar releases in one position, Fig. 2, only the keys for-letters and in the other, Fi 3, only the keys for numbers and signs.
  • T e drawings show that only those keys can be pressed down which correspond to the previously operated change-over kc and thus to the position of the receiver. his mechanism renders mistakes in the transmission of letters or signs entirely impossible even if the appa-' ratus is operated by an inexperienced operator.
  • 1 is I one of the selector ars with its contact lever 2 which acts on the set of contacts 3.
  • 4 is the transmitter spindle on which is mounted a cam 5.
  • the key 6 bears a numberand the key 7 a letter.
  • the locking bar 8 according to my invention is located in front of the selector rails 1 and is adapted to be moved from the left to the right by means of the number change-over key 9 and from the right to the left by the letter change-over key 10. In the illustration the bar has been moved into the left-hand position by the depressed letter key 10 and has been locked in this position by the catch 11 engaging a notch in the bar.
  • a separate key for eac 15 t means or blockin the transmission of t e group of types not esired at the time and change-over keys by the operation 0% which the said means is caused to block the p transmission of one or the other group of 30 types.
  • a separate key and key lever for each type a slidable bar common to the levers of all the keys and provided with such teeth that in one osition of .the said bar the letter types an in the 0 other sition the number t pes are locked and c ange-over keys by t e operation of which said bar is moved from one position into the other.
  • a separate key for each type in which the same transmission sign is used for a plurality of difierent types, a separate key for each type, and a blocking device which at any particular time permits the operation of only one of the keys controlling the same transmission sign.
  • a keyboard transmitter for printing tele phs a plurality of groups of keys contro ing transmission signs, the same sign be-v ing controlled by a plurality of keys each .of

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Input From Keyboards Or The Like (AREA)
US396606A 1928-10-25 1929-10-02 Type printing telegraph apparatus Expired - Lifetime US1814236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE336278X 1928-10-25

Publications (1)

Publication Number Publication Date
US1814236A true US1814236A (en) 1931-07-14

Family

ID=6220189

Family Applications (1)

Application Number Title Priority Date Filing Date
US396606A Expired - Lifetime US1814236A (en) 1928-10-25 1929-10-02 Type printing telegraph apparatus

Country Status (4)

Country Link
US (1) US1814236A (enrdf_load_stackoverflow)
FR (1) FR678296A (enrdf_load_stackoverflow)
GB (1) GB336278A (enrdf_load_stackoverflow)
NL (1) NL31173C (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644038A (en) * 1951-04-12 1953-06-30 Bell Telephone Labor Inc Keyboard mechanism for teletypewriters
US2742532A (en) * 1952-09-11 1956-04-17 Dualex Corp Printer for communications systems
US2768233A (en) * 1951-04-06 1956-10-23 Moser Otto Teleprinter for automatic telex service
US3234331A (en) * 1961-04-01 1966-02-08 Int Standard Electric Corp Key sender for teleprinters and dataprocessing input devices, or the like
US3412204A (en) * 1963-08-27 1968-11-19 Siemens Ag Apparatus for the change-over of the functional assignment of dually utilized keys

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768233A (en) * 1951-04-06 1956-10-23 Moser Otto Teleprinter for automatic telex service
US2644038A (en) * 1951-04-12 1953-06-30 Bell Telephone Labor Inc Keyboard mechanism for teletypewriters
US2742532A (en) * 1952-09-11 1956-04-17 Dualex Corp Printer for communications systems
US3234331A (en) * 1961-04-01 1966-02-08 Int Standard Electric Corp Key sender for teleprinters and dataprocessing input devices, or the like
US3412204A (en) * 1963-08-27 1968-11-19 Siemens Ag Apparatus for the change-over of the functional assignment of dually utilized keys

Also Published As

Publication number Publication date
GB336278A (en) 1930-10-08
FR678296A (fr) 1930-03-20
NL31173C (enrdf_load_stackoverflow)

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