US2457133A - Fragmentary character printer - Google Patents

Fragmentary character printer Download PDF

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Publication number
US2457133A
US2457133A US552887A US55288744A US2457133A US 2457133 A US2457133 A US 2457133A US 552887 A US552887 A US 552887A US 55288744 A US55288744 A US 55288744A US 2457133 A US2457133 A US 2457133A
Authority
US
United States
Prior art keywords
band
arm
printer
cam
chariot
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
US552887A
Other languages
English (en)
Inventor
Edmond M Deloraine
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Priority to BE466587D priority Critical patent/BE466587A/xx
Priority claimed from US415554A external-priority patent/US2365458A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to US552887A priority patent/US2457133A/en
Priority to FR938177D priority patent/FR938177A/fr
Priority to CH269659D priority patent/CH269659A/de
Application granted granted Critical
Publication of US2457133A publication Critical patent/US2457133A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/057—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on calcium oxide
    • 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
    • H04L17/12—Automatic transmitters, e.g. controlled by perforated tape
    • H04L17/14—Automatic transmitters, e.g. controlled by perforated tape with optical sensing means
    • 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

Definitions

  • An object of the invention is to provide a facsimile printer of rugged construction, light in weight, and adapted for portable use, especially for communication with airplanes.
  • Another object of the invention is to provide a facsimile printer in which the number of mechanical movements of the apparatus is limited to a very few,.these being of such a nature asto render the amount of mechanical maintenance on the equipment almost negligible.
  • a further object of the invention is to provide a. facsimile telegraph printer which will avoid the vertical displacement of the letters on the tape when there is anapp'reciable. difierence in speed between the transmitter and the receiver, such speed difference in the present invention resulting only in the slanting slightly forward or backward of the characters,-the direction and degree of slant serving as a guide to indicate the direction and extent of adjustment required by the printer motor governor.
  • Figure 1 is a schematic representation of the printer mechanism and associated circuits
  • Figure 2 is a plan view of the printer chariot shown in Figure 1; I V
  • Figure 3 is a chart indicating the manner in which received impulses are formed into built up characters.
  • a preferred embodiment of a transmitter having a smooth, quiet, cam-operated mechanism of the sewing machine type.
  • a drum, perforated about its circumference in a series of rows is driven uninterruptedly at a uniform rate by a motor.
  • a key operated shutter is provided for each row of perforations, the perforations of each row being arranged according to the elements forming a character in a code.
  • the number and grouping of the per-'- forations of any one ring is such that the beam of light directed through them from the 'out s'ide of the drum to the photo electric-cell inside would be modulated at approximately 540 cyc'l'e's for a short interval, say 30 milliseconds fora start signal, and thereafter in a series of impulses of about 800 cycles to represent the characters.
  • the perforations are grouped to transmit facsimiles of the characters selected, In-order to'do this the perforations in the drum'are ar: ranged to transmit each letter or character in seven horizontal lines, this number being selected to give a fairdegree of detail when the character is recorded.
  • *i'lfhe printerxas shown in Fig. .1 "comprises a motor 220 provided with known means, not shown, for maintaining a constant rate of speed sufficiently close to that of the transmitter to permit start-stop operation.
  • speed variation within reasonable limits does not cause the printing of a wrong letter but the letters are printed slanting in one direction or the other, the direction of the slant indicating Whether the speed is high or low, and the degree of slant, the speed difference. Consequently, speed adjustments are easily maintained.
  • a cam 232 on shaft 222 engages a roller-233 at the end of arm 234 pivoted at 235.
  • a link 236 connects arm 234 with chariot 231, which reciprocates horizontally in suitable guideways (not shown) under the influence of cam 232 and spring 238 connected to arm 234'.
  • the chariot supports seven styli 240 which are vertically movable in apertures inthe chariot against the tension of individual springs, not shown.
  • a top View of the chariot is shown in Fi 2.
  • a print hammer 24! is disposed above the chariot and a platen 242 over which passes an inked ribbon 243 and a papertape 2 44.
  • the print hammer is mounted on an arm 245 pivoted atf246 and held normally against stop .24] by spring 248.
  • the print hammer is oscillated by magnets 250 and 25! secured between the polepieces 252 of a permanent magnet, the armature 253 thereof being connected to the printhammer.
  • the magnet and armature arrangement issimilar to that of a balanced armature loud-speakerunit.
  • is connect ed to the amplifier 2 by circuit 255.
  • the other is connected to contact 251, the tongue 2 58 there.- for being connected via circuit 256 to the amplifier.
  • the printer operates as follows. Assuming the printer and transmitter motors are running at the proper relative speeds and that the trans;- mitter key has been depressed for the letter E sending out a series of spaced impulses com mencing with the cycle start signal, as shown in Figure 3.
  • relay 230 On receipt of the start signal which enters the receiver 2H] and passes through the filterand amplifier 2! I, indicated by the block diagram of Fig. 1, relay 230 is momentarily energized and operates start magnet 228 by a circuit from its.
  • each stylus 240 operated for the first band traverses a distance over the platen while under the printhammer equal to the width of a letter while the first band is being transmitted, and then passes beyond the printhammer.
  • the first band is followed by the second band.
  • each stylus Operated moves under the hammer so that on operation'thereof thestylus contacts the paper tape making a mark in said second band, and so v on, for the remainder of the bands.
  • the pawl drops behind a tooth in, a ratchet wheel 210 provided with a detent, not shown, secured to a roller which cooperates with a pressure roller 2' between which rollers paper tape 244 passes.
  • the reverse movement of arm 23 4 toward the left causes the pawl toturn the ratchet and advance the tape a ,distanceof one letter space.
  • Suitable means, not shown, are used for feeding the ribbon.
  • cam 232 On the completion of the reception of a letter, cam 232 carriesjinsulating pin 260, into engagement with contact tongue 25,8, breaking the circuit to, magnets25ll and 254 and connecting the amplifier via contact 259 again to start relay 235 toawaitreception of the next start impulse.
  • the movementof the styli is very sensitive and the;printhammer follows the signalling currents Iaccuratelythe characters being printed to conform-to the perforations in the transmitter drum.
  • the only nonprinting function required is the word space and the space bar-v of the transmitter when operated merely causes the transmission of a start signal causingthe receiver to start and stop in the manner-above described, and since no impulses areltransmitted to actuate the printhammer the unmarked tape is advanced the distance of a word space;
  • a record surface comprising a paper tape, a stationary platen therefore, an inked ribbon disposed over said tape, a printhamme'r disposed over said platen means for moving said printhammer in response to signal impulses, a chariot, a guideway in which said chariot may move between said printhammer and inked ribbon, a plurality of diagonally disposed styli movably supported in said chariot and arranged when struck by said printhammer to cause said ribbon to mark the paper tape, a pivoted arm arranged to be oscillated, a, link connecting said arm to said chariot whereby the chariot is moved in said guideway corresponding to the movement of said arm, a single-cycle rotary cam swinging said arm uniformly in one direction for printing and releasing it for rapid return, and means operated by said arm in its return movement to feed the paper tape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US552887A 1941-10-18 1944-09-06 Fragmentary character printer Expired - Lifetime US2457133A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE466587D BE466587A (de) 1941-10-18
US552887A US2457133A (en) 1941-10-18 1944-09-06 Fragmentary character printer
FR938177D FR938177A (fr) 1941-10-18 1946-03-27 Perfectionnements aux systèmes de télégraphes imprimeurs
CH269659D CH269659A (de) 1941-10-18 1947-11-29 Telegraphenanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US415554A US2365458A (en) 1941-10-18 1941-10-18 Printing telegraph system
US552887A US2457133A (en) 1941-10-18 1944-09-06 Fragmentary character printer

Publications (1)

Publication Number Publication Date
US2457133A true US2457133A (en) 1948-12-28

Family

ID=27023015

Family Applications (1)

Application Number Title Priority Date Filing Date
US552887A Expired - Lifetime US2457133A (en) 1941-10-18 1944-09-06 Fragmentary character printer

Country Status (4)

Country Link
US (1) US2457133A (de)
BE (1) BE466587A (de)
CH (1) CH269659A (de)
FR (1) FR938177A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550818A (en) * 1949-10-25 1951-05-01 Herbert M Johnson Photoelectric meter-scanning apparatus
US2658106A (en) * 1949-07-01 1953-11-03 Siemens Ag Facsimile printing telegraph system and apparatus
US2926602A (en) * 1957-05-20 1960-03-01 Burroughs Corp Automatic printer
US2933559A (en) * 1956-06-06 1960-04-19 Charles A Campbell Symbol writing recorder
DE1080337B (de) * 1953-03-18 1960-04-21 Int Computers & Tabulators Ltd Verfahren und Vorrichtung zur Herstellung eines sichtbaren Zeichens auf einem Schrifttraeger durch zeitlich aufeinanderfolgendes Zusammensetzen einzelner Zeichenelemente
DE973830C (de) * 1950-07-14 1960-06-15 Int Computers & Tabulators Ltd Verfahren und Vorrichtung zur Herstellung eines sichtbaren Zeichens auf einem Schrifttraeger
US3157456A (en) * 1963-01-31 1964-11-17 Nippon Electric Co Printer
US3209681A (en) * 1963-10-04 1965-10-05 Gen Precision Inc Rotary print head with selective character forming dies
US3242855A (en) * 1963-10-03 1966-03-29 Control Data Corp Electrostrictive printer
US3330208A (en) * 1966-03-31 1967-07-11 Rca Corp Printer having a selectively variable print font
US3757346A (en) * 1971-10-07 1973-09-04 Int Standard Electric Corp Printing method
US4010835A (en) * 1975-08-01 1977-03-08 International Business Machines Corporation Matrix print head
US4031992A (en) * 1974-11-14 1977-06-28 Societe D'applications Generales D'electricite Et De Mecanique S A G E M Printing device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965643C (de) * 1951-08-16 1957-06-13 Autelca Ag Einrichtung zur Erzeugung von Schrittkombinationen bei nach dem Start-Stop-System arbeitenden Typenfernschreibsendern
DE1116267B (de) * 1954-06-08 1961-11-02 Telefonbau & Normalzeit Gmbh Umsetzer zur Umwandlung singulaerer Bedeutungen in aus mehreren Elementen gebildete Telegrafierzeichen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR797172A (fr) * 1935-01-21 1936-04-22 Materiel Telephonique Perfectionnements aux systèmes électriques de signalisation
FR812688A (fr) * 1936-01-21 1937-05-14 Materiel Telephonique Système télégraphique imprimeur à caractères décomposés
US2145264A (en) * 1934-02-19 1939-01-31 Teletype Corp Facsimile printing telegraph receiver
US2226698A (en) * 1936-06-29 1940-12-31 Int Standard Electric Corp Printing telegraph apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145264A (en) * 1934-02-19 1939-01-31 Teletype Corp Facsimile printing telegraph receiver
FR797172A (fr) * 1935-01-21 1936-04-22 Materiel Telephonique Perfectionnements aux systèmes électriques de signalisation
FR812688A (fr) * 1936-01-21 1937-05-14 Materiel Telephonique Système télégraphique imprimeur à caractères décomposés
US2226698A (en) * 1936-06-29 1940-12-31 Int Standard Electric Corp Printing telegraph apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658106A (en) * 1949-07-01 1953-11-03 Siemens Ag Facsimile printing telegraph system and apparatus
US2550818A (en) * 1949-10-25 1951-05-01 Herbert M Johnson Photoelectric meter-scanning apparatus
DE973830C (de) * 1950-07-14 1960-06-15 Int Computers & Tabulators Ltd Verfahren und Vorrichtung zur Herstellung eines sichtbaren Zeichens auf einem Schrifttraeger
DE1080337B (de) * 1953-03-18 1960-04-21 Int Computers & Tabulators Ltd Verfahren und Vorrichtung zur Herstellung eines sichtbaren Zeichens auf einem Schrifttraeger durch zeitlich aufeinanderfolgendes Zusammensetzen einzelner Zeichenelemente
US2933559A (en) * 1956-06-06 1960-04-19 Charles A Campbell Symbol writing recorder
US2926602A (en) * 1957-05-20 1960-03-01 Burroughs Corp Automatic printer
US3157456A (en) * 1963-01-31 1964-11-17 Nippon Electric Co Printer
US3242855A (en) * 1963-10-03 1966-03-29 Control Data Corp Electrostrictive printer
US3209681A (en) * 1963-10-04 1965-10-05 Gen Precision Inc Rotary print head with selective character forming dies
US3330208A (en) * 1966-03-31 1967-07-11 Rca Corp Printer having a selectively variable print font
US3757346A (en) * 1971-10-07 1973-09-04 Int Standard Electric Corp Printing method
US4031992A (en) * 1974-11-14 1977-06-28 Societe D'applications Generales D'electricite Et De Mecanique S A G E M Printing device
US4010835A (en) * 1975-08-01 1977-03-08 International Business Machines Corporation Matrix print head

Also Published As

Publication number Publication date
BE466587A (de)
FR938177A (fr) 1948-09-07
CH269659A (de) 1950-07-15

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