US3110251A - Line-at-a-time printer - Google Patents

Line-at-a-time printer Download PDF

Info

Publication number
US3110251A
US3110251A US150456A US15045661A US3110251A US 3110251 A US3110251 A US 3110251A US 150456 A US150456 A US 150456A US 15045661 A US15045661 A US 15045661A US 3110251 A US3110251 A US 3110251A
Authority
US
United States
Prior art keywords
type
shaft
ratchet
wheel
printing
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
US150456A
Other languages
English (en)
Inventor
Scheffel Kurt
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3110251A publication Critical patent/US3110251A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • B41J1/44—Carriers stationary for impression
    • B41J1/46—Types or dies fixed on wheel, drum, cylinder, or like carriers
    • B41J1/48—Types or dies fixed on wheel, drum, cylinder, or like carriers with a plurality of carriers, one for each character space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/48—Type carrier arrested in selected position by electromagnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K3/00—Apparatus for stamping articles having integral means for supporting the articles to be stamped
    • B41K3/02—Apparatus for stamping articles having integral means for supporting the articles to be stamped with stamping surface located above article-supporting surface
    • B41K3/04—Apparatus for stamping articles having integral means for supporting the articles to be stamped with stamping surface located above article-supporting surface and movable at right angles to the surface to be stamped
    • B41K3/10—Apparatus for stamping articles having integral means for supporting the articles to be stamped with stamping surface located above article-supporting surface and movable at right angles to the surface to be stamped having automatic means for changing type-characters, e.g. numbering devices

Definitions

  • Kurt Scheffel 0 [24% Attorney United States Patent 3,110,251 LlNE-AT-A-TIME PRENTER Kurt Schetfel, Aulendort, Wurttemberg, Germany, as-
  • This invention relates to a line-at-a-time printer employing type rings, and in which the printing is effected in the normal position.
  • the first mentioned type of printing device operates substantially slower, because at first all type carriers have to be set, and the printing can only be effected thereafter; this method, however, provides a substantially better face of the resulting print. Efforts have therefore been made to find an optimum way, that is, a high-speed printing device, which produces an acceptable face of print.
  • the novel type of linesat-a time printer of the invention uses type rings that are loosely seated on a common driving shaft in the conventional manner, and the printing is performed in the normal position.
  • the invention proposes the type rings to be arranged on a magnetic shaft, so that the coupling of the type rings will be effected by magnetic force.
  • the type rings are designed as toothed wheels, and to each toothed type-wheel there is assigned a toothed ratchet wheel rolling thereon, capable of being blocked with the aid of a stationary ratchet pawl arranged in the apparatus, so that the type ring also is prevented from performing its further rotation, but is ready to perform the printing operation.
  • the fact that the type rings are driven by magnetic force has the advantage that the type wheels do not need to be seated frictionally on the driving shaft, but can be seated rather loosely, thus causing the heat development during the stoppage to be considerably lower than with the conventional types of line-at-a-time printers.
  • the individual toothed ratchet wheels have the advantage, firstly of having no effect on the width of the printing types and, secondly, of being suitable themselves for controlling "ice the type rings, i.e. for actuating the ratchet pawl. It is appropriate to design the ratchet wheels as code disks in the conventional manner with the code marking being used to control the ratchet pawl, e.g.
  • FIGS. 1 and 2 of the accompanying drawings in which:
  • FIG. 1 shows a partial section of the high-speed lineat-a-time printer with a view of several type rings and associated ratchet wheels
  • FIG. 2 is a sectional view of the line-at-a-time printer according to the invention.
  • the type rings 1 (FIGS. 1 and 2), whose widths correspond to the spacing between the letters, are arranged closely to one another on the electromagnetic driving shaft 2 which is rotatably arranged within the support-ing frame.
  • the electromagnetic driving shaft 2 which is permanently driven by a motor, is electrically energized via the leads 3 led through the hollow driving pivots 4.
  • the .type rings 1 are arranged in an easily rotatable manner on the electromagnetic driving shaft 2, so that there is only a slight mechanical friction.
  • the type rings 1 are provided with e.g. 36 embossed printing types 5 leaving a small tooth gap 6 between the individual types.
  • the tooth gaps 6 on the type rings 1 are engaged by the teeth 7 of the ratchet wheels 3, each type ring having its individual ratchet wheel.
  • These ratchet wheels 8 are seated in an easily rotatable manner on the three shafts 9, 10, 11 which are firmly arranged within the supporting frame. The mutual spacing between the Wheels is secured by the length of their hubs 12.
  • the brush-holding levers 13 are still arranged between the ratchet wheels 8.
  • the ratchet wheels 8' are provided with a pulse-transmitting disc 14 which may he designed e.g. in accordance with the known printed circuit technique.
  • This disk may also be a copper disk in which the currentless or electrically inactive sections of the slip rings are etched away and filled with a sealing compound (casting resin).
  • the conducting surfaces of this pulsetransmitting disk 14, for example, are connected to ground.
  • the brushes 15 are arranged to contact with the slip rings and are mounted via the block of insulating material 16 on the brush-holding levers 13.
  • the brushholding levers 13 together with the block of thein-sulating material 16 and the brushes 15 are capable of being readjusted by some angular degrees about the shafts 9, 10 and 11, and are capable of being fixed in the adjusted or set position with the aid of clamping devices (not shown). In this way the brushes can be adjusted in accordance with the operating time of the locking magnets Furthermore, the locking magnets 17 are staggered and graded in echelon formation around the ratchet wheels 8.
  • the locking armatures (ratchet pawls) 18 of these magnets are arranged in front of the teeth 7 of their respective ratchet Wheels 8 in such a way that these armatures, upon energization of the locking magnets 17, will engage the tooth gaps, and the next tooth 7 of a particular ratchet Wheel will come to lie close to its associated locking armature 18, so that in this way the ratchet wheels 8 are prevented from performing a further rotation.
  • the two pole pieces 19 and 21 ⁇ which are designed as bars and extend over the entire group of type rings, constitute the poles of a closed magnet system, whose coils 21 and 22 may also be arranged at the two face sides. The ends of the poles are positioned exactly opposite the types and thus serve as magnetic aligning beams.
  • the paper or blank 23 to be printed is positioned between the ink ribbon and the printing beam 25.
  • an ink pad (inking cloth) may also be used having the same width as the group of type rings, and extending from the denoted coil 26 to coil 27, and also being provided with one of the conventional types of ink-ribbon feed and reversing mechanisms.
  • a relay circuit for example, is used to which the connecting terminals of the locking magnets 17 are led, as well as the connecting terminals of the brushes 15, and of the input device which has not been shown (keyboard, storage, perforated-type reader, or magnetic-tape reader, or the like).
  • the input device which has not been shown (keyboard, storage, perforated-type reader, or magnetic-tape reader, or the like).
  • the electromagnetic driving shaft 2 is deenergized and the aligning-beam coils 21 and 22 are energized. This causes the electromagnetic friction to be removed completely, the locking armatures 18 to be disengaged, and
  • the type rings 1 to be retained in their position only by the action of the two pole pieces '19 and 29. Thereupon the printing is effected in that the printing beam 25 either is moved jerkily upwards, or pressed in the upward direction. After the printing operation the coils 21 and 22 are deenergized, so that now the type rings 1 and the ratchet wheels 8 are again permitted to move freely. Since immediately after the elimination of the electromagnetic friction a new line may be prepared, it is possible to initiate the new setting and printing process immediately after the performance of the preceding printing process.
  • a line-at-a-time printer comprising an electromagnetic shaft, means for rotating said shaft, a plurality of type rings having types spaced apart to form gaps therebetween loosely seated on said shaft and adapted to be rotated with said shaft by magnetic torque at any angular position of said type rings with respect to said shaft when said electromagnetic shaftis energized, a toothed ratchet wheel for each type ring rotatably mounted on an axis spaced'from the axis of said shaft, the teeth of said ratchet wheel being so spaced as to mesh with the gaps between the types of said type ring, whereby rotation .of each type ring will rotate its associated ratchet Wheelja 'ratchet pawl for each ratchet wheel mounted for movement into and out of engagement with its associated wheel and so positioned as to hold said wheel against further rotation with the associated type ring in proper printing position when said pawl is moved into engagement with said wheel.
  • a line-at-a-time printer as defined in claim 1, in which an electromagnet' having an armature is provided for each ratchet wheel and in which said armature is itself the ratchet pawl which engages the ratchet wheel.
  • a line-at-a-time printer as defined in claim 2, further comprising means for energizing the pawl-operating electromagnets at selected positions of the associated ratchet wheels, said means comprising a code disk on each ratchet wheel and a set of sensing elements for each code disk adapted to engage said disk and to complete a circuit through the associated electromagnet when a selected position is reached.
  • a lineat-a-time printer as defined in claim 1.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Handling Of Sheets (AREA)
  • Labeling Devices (AREA)
US150456A 1960-11-18 1961-11-06 Line-at-a-time printer Expired - Lifetime US3110251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST17130A DE1233181B (de) 1960-11-18 1960-11-18 Einrichtung zur Einstellung von Typenraedern eines Zeilendruckers

Publications (1)

Publication Number Publication Date
US3110251A true US3110251A (en) 1963-11-12

Family

ID=7457352

Family Applications (1)

Application Number Title Priority Date Filing Date
US150456A Expired - Lifetime US3110251A (en) 1960-11-18 1961-11-06 Line-at-a-time printer

Country Status (6)

Country Link
US (1) US3110251A (nl)
BE (1) BE613650A (nl)
CH (1) CH399497A (nl)
DE (1) DE1233181B (nl)
GB (1) GB926140A (nl)
NL (1) NL273788A (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661076A (en) * 1970-05-25 1972-05-09 New England Merchants National Belt printing apparatus for printing line of print at one time
US4078485A (en) * 1976-05-17 1978-03-14 Computer Entry Systems, Inc. Print wheel control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573356A (en) * 1950-09-30 1951-10-30 Ibm Accounting machine for comparing totals on two accumulators
US2636139A (en) * 1950-05-11 1953-04-21 Farrand Optical Co Inc Electromagnetic coupling
US2699857A (en) * 1952-12-06 1955-01-18 Ind Patent Corp Line memory typewriter
US2796830A (en) * 1955-08-12 1957-06-25 Hewlett Packard Co Data controlled selective printing system
US2993642A (en) * 1958-09-19 1961-07-25 Tally Register Corp Tape printing and punching machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE451424C (de) * 1927-10-26 Martin Lebeis Selbsttaetig wirkende Schreibmaschine
US2742855A (en) * 1946-04-29 1956-04-24 Hofgaard Rolf Print wheel setting mechanism
US2813479A (en) * 1956-01-25 1957-11-19 Ibm Type group and type selecting means for wheel printers
DE1006885B (de) * 1956-06-12 1957-04-25 Willy Salchow Einrichtung zum Umwandeln von Impulskombinationen in Bewegungsgroessen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636139A (en) * 1950-05-11 1953-04-21 Farrand Optical Co Inc Electromagnetic coupling
US2573356A (en) * 1950-09-30 1951-10-30 Ibm Accounting machine for comparing totals on two accumulators
US2699857A (en) * 1952-12-06 1955-01-18 Ind Patent Corp Line memory typewriter
US2796830A (en) * 1955-08-12 1957-06-25 Hewlett Packard Co Data controlled selective printing system
US2993642A (en) * 1958-09-19 1961-07-25 Tally Register Corp Tape printing and punching machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661076A (en) * 1970-05-25 1972-05-09 New England Merchants National Belt printing apparatus for printing line of print at one time
US4078485A (en) * 1976-05-17 1978-03-14 Computer Entry Systems, Inc. Print wheel control

Also Published As

Publication number Publication date
CH399497A (de) 1965-09-30
BE613650A (nl) 1962-08-08
DE1233181B (de) 1967-01-26
GB926140A (en) 1963-05-15
NL273788A (nl)

Similar Documents

Publication Publication Date Title
US3099711A (en) Printing device
GB1142528A (en) Printing apparatus
GB1207507A (en) Improvements in or relating to teleprinters and the like
GB907349A (en) Improved magnetic printer
US3015265A (en) Driving apparatus
US3315860A (en) High speed web or paper feeder
US3110251A (en) Line-at-a-time printer
US3286806A (en) Rotatable and tiltable type head control apparatus
US3424291A (en) Carriage drive for high-speed printer
US3861302A (en) Printer
US4389131A (en) Printer with electromagnetic drive yokes
US3218966A (en) Apparatus for decoding and printing digital data
US3232229A (en) Ink ribbon feed and reverse mechanism
US3367469A (en) Digital printer with plural similar print heads
US3415184A (en) High speed serial printing device for teleprinters, accounting machines and data processing equipments
US3388782A (en) Serial data printer having plural hammers actuated in sequence
US3875859A (en) High speed printer
US2447803A (en) Tape time-recorder with diffeben
US3200740A (en) High speed printer with ribbon-shift assembly for permitting printing in different ink
US3156181A (en) Type wheel printer
US3710912A (en) High speed serial printing device for typewriters, teleprinters, calculating machines, accounting machines and the like
US1916964A (en) Printing mechanism
US3030882A (en) High speed printing machines
US4401027A (en) Printing mechanism
US2817428A (en) Electric typewriting machine