US3669016A - Selective printer including settable,resiliently driven type wheels - Google Patents

Selective printer including settable,resiliently driven type wheels Download PDF

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Publication number
US3669016A
US3669016A US28621A US3669016DA US3669016A US 3669016 A US3669016 A US 3669016A US 28621 A US28621 A US 28621A US 3669016D A US3669016D A US 3669016DA US 3669016 A US3669016 A US 3669016A
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United States
Prior art keywords
wheel
locking
wheels
idler
locking wheels
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Expired - Lifetime
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US28621A
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English (en)
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Hermann Kittel
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Individual
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Individual
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    • 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

Definitions

  • ABSTRACT Apparatus for printing available coded data having type wheels individually arrestable in a printing position and resiliently connected to a drive shaft through springs.
  • ldler means are provided for each type wheel and each idler means if firmly coupled with its respective type wheel and resiliently driven by a shaft.
  • Means including at least two locking wheels are positioned independently of each idler means and of each other, with the means including the locking wheels being resiliently driven by the shaft.
  • each locking wheel is provided with stop means for avoiding advancement of the idler means as compared to each of the locking wheels, with the arresting means controlled by the data to be printed consecutively, being engaged altematingly, one each for one printing operation.
  • This invention relates generally to print-out apparatus, and more particularly to a device for printing out available coded data with type wheels being individually arrestable in printing position and connected resiliently through spring means with a drive member.
  • test data printers it is additionally necessary to record the operational behavior of a machine or plant by means of numerical data and to keep such data accessible at any time.
  • the real use of such data is only made in a few cases so that a high expenditure for the printing unit is thus unjustified.
  • a stepping wheel driving the type wheel is resiliently coupled with a drive wheel. Sensing a hole in the punched card, the stepping wheel is stopped by the engagement of a pawl, while the drive shaft goes on tuming' with undiminished. speed.
  • the type wheel being coupled with the stepping wheel, the printing type selected at the moment of engagement of the pawl in the stepping mechanism stays for a time in the printing position, thus permitting printing. Thereafter, the stepping wheel is released.
  • Such printing units allow a relatively slow printing sequence, the selection of the next printing character, and the preparation of the next printing operation being only possible when the stepping wheel is again in the defined position of angle of rotation relative to the drive shaft. Upon an earlier income of the arresting impulse, a wrong type is released for printing.
  • printing units comprising type wheels connected through torsion springs with one of common drive shaft. Only part of the circumference of the typewheels is fitted with printing types, the other part being provided with pawls.
  • the drive shaft changes its sense of rotation. Thus this pennits the corresponding pawls to engage the teeth of the type wheel.
  • release of the type wheels for the preparation of a new printing cycle is accomplished.
  • the printing sequence is slowed due to the fact that, upon termination of the printing, the springs must be relaxed each time before new printing information'can be evaluated. It is necessary to brake and accelerate the entire system during each printing cycle. Therefore, a'further slowing of the printing sequence is caused by this required altemate rotation of the shaft.
  • Still another object of this invention is to provide for each type wheel an intermediate idler wheel resiliently by a shaft and firmly connected with the type wheel, with the intermediate wheel being provided with at least two locking wheels being resiliently driven by the shah and each being arrestable by an associated one pawl, the advance of the idler wheel as compared to each locking wheel being avoided by stops, and
  • Another object of this invention is to provide a device in which the printing of information is immediately followed by the setting for the next information without necessitating the return to the prior position.
  • the shaft is rotated at a constant speed.
  • a rotation of corresponds to one revolution of the type wheel such that, in the case of the two locking wheels, each semi-revolution of the shaft allows one character to be printed.
  • the locking wheels as well as the idler are driven by the shaft in like manner. If, however, information to be printed is conveyed to an electronic register, one of the pawls engages the corresponding locking wheel providing the information in the register coincides with the type of the type wheel in the printing position. Due to the stopping of the locking wheel, it is avoided through the stop that the idler goes on turning, while the type wheel consequently remains in the desired position.
  • the second locking wheel goes on rotating synchronously with the shaft.
  • the locked locking wheel is released and, like the idler, is accelerated by the tensioned torsional spring until the position of the angle corresponding to the position of shaft is reached again.
  • the printing operation of the next character could be already prepared before by the other pawl engaging in the corresponding locking-wheel.
  • the idler need not follow the new angle position of the shaft after the printing of the first character. It is stopped again before the relaxation of the spring, in order to print the next character.
  • the locking wheels are always returned to their initial position with respect to the shaft.
  • Another object of this invention is to provide a device in which there is an independent, rotary, coaxial arrangement of idler and locking wheels, with each wheel being driven by an appertaining further wheel fitted resiliently on a drive shaft.
  • the coaxial provision of wheels required for the impression is realized by intermeshing of corresponding projections and recesses of the wheels.
  • Still even another object of this invention is to provide a device having a drive shaft with stops in order to avoid the advance of the other wheels. This is achieved by a steady pretension of the torsional springs, even when the whole printing unit is in the idle position.
  • the advantage of such a provision is that sufficient spring power is obtained upon relaxation of the spring even shortly before reaching the stop. A quick and safe operation is thus obtainable.
  • a favorable structure is realized with the arrangement of the locking wheels on opposite sides of the idler, the latter exhibiting two projections in reverse order by 180 each of which engaging in a semi-circular slot provided in the appertaining locking wheel, the slots in the locking wheels being displaced relatively to each other by 180 in idle position. Then the idler is alternatingly stopped by the bilaterally arranged locking wheels, and the appertaining torsion spring is always tensioned again.
  • Still a further object of this invention is to provide a printing unit whose parts serve to select and prepare the prinn'ng types. They act alternatingly in time on theidler, and, consequently, on the type wheel connected to it. This will permit a very quick operation, with the parts thereof being subjected to strong accelerations and slow down response and working slowly and alternately.
  • a printing unit having a drive shaft 1 which is fitted with a single-revolution clutch (not illustrated) which facilitates the initiation of each individual printing operation.
  • a single-revolution clutch (not illustrated) which facilitates the initiation of each individual printing operation.
  • the drive shaft 1 is turned counterclockwise by 180.
  • a bushing 2 is fixedly connected to the drive shaft 1, and it is provided with a slot 3 in which is fastened the core of a helical spring 4.
  • the outer end of the spring 4 rests against the edge 5 of segment 6 of a wheel 7.
  • This helical spring 4 is normally biased to urge an edge 8 of a segment 6 against a cam 9 of the bushing 2.
  • the same resilient synchronized arrangement is provided for wheels 10 and 1 1.
  • Locking wheels 12, 14 and an idler 13 arranged between them are pivotally mounted on an axle 27.
  • the wheels 7, 10 and 11, are circumferentially formed with radially spaced teeth in the periphery thereof with all wheels having the same number of teeth in the present case.
  • wheels 7, 10, and 11 are turned counterclockwise by 180 and wheels 12, 13, and 14 also turn clockwise by 180.
  • ldler 13 is provided with two lateral projections or pins 15, 16, which are displaced relatively to each other by 180. Pins 15, 16 engage in corresponding slots 17, 18 formed in the locking wheels 12, 14. In normal position, projection rests against the upper edge 19 of wheel 12, and projection 16 rests against the lower edge 20 of slot 18. Semi-circular slots 17, 18 are normally not aligned with each other as view in the draw- In the event two successive pieces of information are to be printed, the selection of the first piece of information is made at the locking wheel 12, and of the second one at wheel 14.
  • wheels 7, 10, and 11 are driven counterclockwise through the helical spring 4 by the revolution of drive shaft 1; they drive wheels l2, l3 and 14 with which they are constantly intermeshing so that these wheels are commonly turned clockwise.
  • ldler 13 is constantly intermeshing with a transfer wheel 21 which, in turn, drives a wheel 22 of type roller 23. As soon as idler 13 starts to turn clockwise, type roller 23 is also moved clockwise.
  • a coding plate (not illustrated) is delivering pulses to an electronic plotting panel, the pulses corresponding to the position of drive shaft concerned. These pulses are constantly compared with the information to be printed and stored in a register, and in case of conformity, one of the magnet systems 24, 28 gets a current impulse, attracting the appertaining armatures 25, 29 and causing the pawls 26, 30 to be inserted into a space between two adjacent teeth of wheels 12, 14.
  • Edge 20 of slot 18 moves over and relative to the projection 16 of the blocked idler 13.
  • the printing operation properly speaking is carried out just before the termination of the 180 rotation of shaft 1 whereby the selected information is printed, and, immediately thereafter, pawl 26 is removed from the path of motion of the teeth of the wheel 12.
  • Wheel 12 is then released, and spring 4 of wheel 7 urges wheel 12 clockwise until edge 8 of segment 6 stops at cam 9 of bushing 2.
  • edge of slot 17 also removes from projection 15 of idler 13, which again is turned clockwise by the tensioning helical spring 4 in wheel 10 and follows edge 19 in wheel 12.
  • the magnetic system 28 When selecting the second piece of information, the magnetic system 28 receives a current impulse when the position of the locking wheel 14 coincides with the information intended for printing and stored in the register.
  • the current impulse causes the mature 29 to be attracted, while pawl 30 is pushed into the gap between spaced teeth of wheel 14 coinciding with the read-out information.
  • type roller 23 is still in a position which does not correspond to the information to be printed out.
  • Roller 23 and idler 13 are still capable of achieving the catchup operation, while the position to be resumed is already determined at locking wheel 14. If idler 13 still accomplishes the catch-up movement by virtue of the tensioned helical spring 4 in wheel 10, such movement may be limited by pin 16 moving into engagement with the edge 20 of slot 18.
  • Helical springs 4 may be allowed to act directly on locking wheels 12, 14 and on idler 13 respectively. Moreover, there may be used three or four locking wheels instead of the two locking wheels 12, 14 used in the instant case, said locking wheels becoming effective consecutively in a cycle. Circumference of locking wheels must be modified subject to the subdivision made accordingly.
  • Apparatus for printing available coded data having type wheels individually arrestable in a printing position comprising, idler means provided for each type wheel and firmly coupled to its respective type wheel, at least two locking wheels positioned independently of said idler means and of each other, a drive shaft, said locking wheels and said idler means being driven independently by said drive shaft, means for arresting each of said locking wheels from movement, each of said locking wheels being provided with stop means for engaging and preventing advancement of said idler means as compared to each of said locking wheels, and said arresting means being controlled in accordance with the data to be printed consecutively and being urgable altematingly into engagement with the locking wheels, one each for each printing operation.
  • each of said locking wheels being formed with a semi-circular slot formed therein, said slots in said locking wheels being displaced relatively to each other by in an idle position, said idler means being fonned with two projections displaced relatively from each other by 180 and on opposite sides of each of the locking wheels, each projection being located in the semicircular slot of the locking wheel adjacent to the side of the idler means from which the particular projection extends to limit movement of the idler means when the locking wheel is prevented from moving.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US28621A 1969-04-17 1970-04-15 Selective printer including settable,resiliently driven type wheels Expired - Lifetime US3669016A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691919404 DE1919404B1 (de) 1969-04-17 1969-04-17 Druckvorrichtung

Publications (1)

Publication Number Publication Date
US3669016A true US3669016A (en) 1972-06-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US28621A Expired - Lifetime US3669016A (en) 1969-04-17 1970-04-15 Selective printer including settable,resiliently driven type wheels

Country Status (4)

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US (1) US3669016A (de)
CH (1) CH504734A (de)
DE (1) DE1919404B1 (de)
SE (1) SE349163B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757688A (en) * 1972-02-23 1973-09-11 Addressograph Multigraph Traveling cylinder imprinter having settable type wheels with three peripheral sectors
US3861302A (en) * 1972-02-04 1975-01-21 Citizen Tokei Company Limited Printer
US3872789A (en) * 1973-12-13 1975-03-25 Electronic Memories & Magnetic Printer with print wheels having coded perforations for selective positioning
US3915086A (en) * 1973-11-30 1975-10-28 Bell & Howell Co Printing apparatus
US3930444A (en) * 1973-04-25 1976-01-06 Carl Valentin Gmbh Printing device for imprinting selected characters on a movable record medium
US3954055A (en) * 1973-06-12 1976-05-04 Kabushiki Kaisha Suwa Seikosha Parallel printer
US3972281A (en) * 1971-10-07 1976-08-03 Norprint Limited Adjustable print-out selection mechanisms
US4054089A (en) * 1974-12-27 1977-10-18 Copal Company Limited Line printer
US4093243A (en) * 1975-08-29 1978-06-06 Nissan Motor Company Limited Rubbing contact seal member with low wear coating and metal-containing undercoat
US4220082A (en) * 1979-05-03 1980-09-02 Esselte Pendaflex Corporation Print wheel selection mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT533792A (de) * 1954-05-29
DE1054257B (de) * 1955-05-21 1959-04-02 Kienzle Apparate Gmbh Verfahren zur UEbertragung von in elektronischen Zaehlwerken vorhandenen Zaehlwerten in mechanische Druck- und/oder Zaehlwerke
GB1221963A (en) * 1968-03-27 1971-02-10 Kent Ltd G Improvements in or relating to electromagnetic flowmeter heads

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972281A (en) * 1971-10-07 1976-08-03 Norprint Limited Adjustable print-out selection mechanisms
US3861302A (en) * 1972-02-04 1975-01-21 Citizen Tokei Company Limited Printer
US3757688A (en) * 1972-02-23 1973-09-11 Addressograph Multigraph Traveling cylinder imprinter having settable type wheels with three peripheral sectors
US3930444A (en) * 1973-04-25 1976-01-06 Carl Valentin Gmbh Printing device for imprinting selected characters on a movable record medium
US3954055A (en) * 1973-06-12 1976-05-04 Kabushiki Kaisha Suwa Seikosha Parallel printer
US3915086A (en) * 1973-11-30 1975-10-28 Bell & Howell Co Printing apparatus
US3872789A (en) * 1973-12-13 1975-03-25 Electronic Memories & Magnetic Printer with print wheels having coded perforations for selective positioning
US4054089A (en) * 1974-12-27 1977-10-18 Copal Company Limited Line printer
US4093243A (en) * 1975-08-29 1978-06-06 Nissan Motor Company Limited Rubbing contact seal member with low wear coating and metal-containing undercoat
US4220082A (en) * 1979-05-03 1980-09-02 Esselte Pendaflex Corporation Print wheel selection mechanism

Also Published As

Publication number Publication date
CH504734A (de) 1971-03-15
DE1919404B1 (de) 1970-10-22
SE349163B (de) 1972-09-18

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