US3759360A - Apparatus for the control of type printing sequences - Google Patents

Apparatus for the control of type printing sequences Download PDF

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Publication number
US3759360A
US3759360A US00040514A US3759360DA US3759360A US 3759360 A US3759360 A US 3759360A US 00040514 A US00040514 A US 00040514A US 3759360D A US3759360D A US 3759360DA US 3759360 A US3759360 A US 3759360A
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United States
Prior art keywords
intermediate member
lever
type printing
members
released
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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
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US00040514A
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English (en)
Inventor
A Rix
G Werner
H Euchs
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Olympia Werke AG
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Olympia Werke AG
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Publication of US3759360A publication Critical patent/US3759360A/en
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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
    • B41J23/00—Power drives for actions or mechanisms
    • B41J23/02—Mechanical power drives
    • B41J23/12—Mechanism driven by cams engaging rotating roller
    • 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
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/18—Locks
    • B41J5/22—Interlocks between keys, e.g. without detent arrangements

Definitions

  • ABSTRACT Apparatus for controlling type printing sequences of manually actuatable, power-driven typwriters and similar machines having type printing mechanisms and key levers including a plurality of releasably mounted intermediate members, each of which is movable between a rest mode and a release mode and arranged to actuate an associated type printing mechanism when its respective key lever is depressed.
  • Each intermediate member has a spring member biasing it toward a ball block, into which one released member at a time may drop. When an intermediate member is released while another intermediate member is in the ball block, the biasing force of the released intermediate member supplied by its spring member holds it in storage until the ball block is cleared.
  • the present invention relates to a device for the automatic control of the type printing sequence in manually operated power-driven typewriters and similar office machines in which intermediate members bring the type printing mechanism into the effective range of the power drive by actuation of a key and cooperate with a blocking member in such a manner that the type printing sequence is entirely blocked when two keyboard pulses are given at exactly the same time.
  • a device for a power driven typewriter for example, is known in which the intermediate lever, which is associated with each typebar, has a protrusion which engages a ball block.
  • the ball block is disposed in the direct effective range of thepower drive and can under certain circumstances block the operating positions of the typebars, for example, when two typebars have been actuated simultaneously.
  • the ball block is released to insure that an obstruction will not occur, but only after initiation of the longitudinal movement of the intermediate levers, so that a second stroke may follow after a substantial time interval. If this second stroke comes too soon, the intermediate lever related thereto can not fall into the blocking member, and the typing flow is substantially interfered with by this resistance.
  • a further device is known for typewriters in which the type printing sequences are also positively actuated in the proper sequences. If, in this case, two keys are actuated in sequence, the drive lever first takes along 8 released hammer lever and causes the appropriate type to be printed. A second hammer lever can, after the drive lever has already started to move for the accomplishment of the first stroke, fall behind the drive lever into a prepared or storage position.
  • the second hammer lever may be actuated only after a substantial time interval during which the working bar has passed through a certain angular range. This time interval depends on the participating release members, the speed of the drive shaft for a single-stroke coupling which releases the drive rails, and on the machine rhythm as a whole.
  • a further disadvantage is that a third key can be actuated only when the drive rail has actuated a first hammer lever and has brought a second lever out of the above-mentioned angular range.
  • the interval between a first and the earliest possible third stroke is much too long to be satisfactory. No incorrect types are printed, but the typing speed is reduced when a plurality of irregular stroke sequences block the machine too often.
  • a further drawback of the known device is that the intermediate levers must be moved into the block by manual force. This involves a substantial amount of effort that required for manually actuated mechanical typebar typewriters and far exceeding the required actuation force for electrically driven typewriters. However, a uniform actuation force which corresponds to that of electrically driven typewriters is highly desirable.
  • At least one releasably disposed intermediate member is under the influence of a releasable force; the release occurring by a pulse-type actuation of an appropriately associated key lever.
  • the intermediate member then automatically falls into the blocking member to automatically control the type printing sequences and actuate them to'occur in the proper sequence in a known manner, whereupon, it can be brought back into the rest mode by a power drive.
  • Two intermediate members may therefore be charged directly in immediate succession; the first intermediate member being able to fall directly into the blocking member, whereas the second intermediate member is genuinely stored and then automatically called out.
  • the intermediate member is placed into the blocking member, according to the present invention, under the effect of a releasable force; the energy required for the automatic control of the type printing sequences being returned again when the intermediate member is reset by the power drive.
  • the intermediate members are provided with blocking arms which engage in the blocking member configured as a ball block, and by their configuration, influence the functioning of the individual typeprinting mechanisms in such a manner that during the course of one mechanism operation a second mechanism can be inserted into the block to perform an overlapping operation and a third mechanism can be genuinely stored in waiting position.
  • a still further advantageous feature of the present invention is that the intermediate members each define control curves which have a basic engaging position and a storage position, so that a second actuation immediately following a first actuation can be stored.
  • FIG. I is a perspective, partly schematic, partly crosssectional view of one embodiment of the present invention.
  • FIG. 2 is a side elevation view, on a much larger scale, of a portion of FIG. 1.
  • FIG. 3 is a front elevation view, partly in cross section, showing the ball block of FIG. 1.
  • FIG. 4 is a side elevation, schematic view of a second embodiment of the present invention.
  • the first embodiment of the present invention has a plurality of typebar actuating mechanisms, including a plurality of sub levers 2 (only one of which is shown in FIG. I), which are mounted for pivotal movement on a shaft 3 and are each biased by an appropriate spring 1.
  • Shaft 3 is mounted in the housing of a machine such as a typewriter (not shown).
  • Spring 1 may be, for example, a helical tension spring.
  • the levers 2 are in operative connection with the type-bars 5 by means of the links 4. Only one typebar 5 and one link 4 are shown in FIG. 1. Also mounted in the machine housing is a shaft 6, on which key levers 7 with keys 8 are pivotally mounted.
  • Each key lever 7 carries a release tongue .9, and each is biased by a suitable spring 10.
  • the spring 10 may, for example, be a helical tension spring.
  • a comb-shaped member 70 is also provided with slots 70 for each key lever 7 which serves as a stop for the pivotal movement of key levers 7.
  • the intermediate member is in the form of a lever 11 provided with a slot 11.
  • the slot 11' is defined by a curved control surface 13 which in turn includes a basic detent portion 14, a storage detent portion and an inserted portion 15'.
  • the storage detent portion 15 lies between the portions 14 and 15'.
  • the lever 11 is mounted, as illustrated in FIG. 2,' on a shaft 12 passing through slot 11' and has as a result of the mounting a basic detent position, a storage detent position and an inserted position.
  • the basic detent position is achieved when the shaft 12 is in engagement with the basic detent portion I4 of the surface 13, while the storage detent position is achieved when the shaft 12 is in engagement with the storage detent portion 15 and the inserted position is achieved when the shaft 12 is in engagement with the inserted portion 15'.
  • the lever 11 also has an abutment surface 16, a control tongue 17, a blocking arm 18 and an abutment tongue 19. The function of each of these portions of lever 11 will be set out below.
  • a leaf spring comb 29 is provided which includes a number of laminated springs 2%. Each of the springs 28 is associated with a respective one of the levers II in the machine. Only two springs 28 are shown in FIGS. 3 and 2 for clarity.
  • the leaf spring comb 29 is permanently connected to the machine housing by suitable, well known means (not shown) and is arranged so that the end portion 28 of each spring 28 is in contact with the abutment surface I6 ofa respective lever 11. Thus, the springs 28 continuously bias the levers II.
  • the machine is provided with a transverse bar 37.
  • the clockwise rotation (FIG. 2) of the lever 11 is terminated. From this position, the lever Ill will be restored to its rest position, and as a result the spring 28 in engagement therewith will be pretensioned.
  • a cam member 20 is rotatably mounted on each lever 2, two cam members 20 being shown in FIG. 2.
  • the cam member 20 is provided with a drive cam surface 21 and a curved control surface 22 bearing contact points 23, 24 (FIG. 2).
  • a known ball block 31 with a plurality of balls 25 (FIG. 3) is, moreover, disposed in the machine housing in a guide member 32.
  • the plurality of balls 25 assembled in a row is held in a center operating position by a pair of coil springs 26 and 27 one at each end of the row.
  • FIG. 4 shows a further embodiment in which the present invention is used with longitudinally displaceable coding interposers 34. Only one interposer 34 is shown in FIG. 4. Bails 35 are charged by these coding interposers 34 to initiate the appropriate setting of a known, single element printing head (not shown)
  • Each interposer 34 includes a slot 34' through which a mounting pin 40 in inserted for mounting each interposer 34 for pivotal and translational movement with respect thereto.
  • a spring 42 is fastened at 42' to the machine and at 42" to the interposer 34. The spring 42 biases the interposer 34 against the stop pin 41 and the mounting pin 40.
  • Each interposer 34 is further provided with cam surfaces 39 which engage with the surface 24' of a lever 46 with an effect to be described hereinafter.
  • the lever 46 is, with the exception of a notch portion 46, which engages a pin 44in the rest position shown in FIG. 4, similar to lever 11, that is, reference numerals Ill", l6, 17', 18', 19, 24' and 30' refer to portions on lever 46 which are similar to the portions referred to by reference numerals 11', 16, 17, l8, 19, 24 and 30 on lever 11.
  • the present invention can be employed and applied whereever irregular, manually applied pulses are to be positively transmitted in the correct sequence.
  • the power roll drive 36 acts on the drive cam surface 21 of cam 20 so as to rotate cam 20 counterclockwise and pivot lever 2 about shaft 3.
  • the lever 2 pivots in a clockwise direction, which pulls link 4 and causes the respective typebar 5 to print its particular character.
  • cam 20 continues to rotate under the influence of powerroll 36, the cam surface 22 moves the abutment tongue 19 of the intermediate lever' 11 against the transverse bar 37 and thereafter back to its rest mode and thus automatically retensions spring 28.
  • lever 11 is automatically placed into the ball block 31.
  • the spring suspension, 26, 27, on both sides of the ball block 31 has the advantage that the insertion of the levers 11 is always done with the same force; the same number of balls 25 alwaysbeing displaced.
  • FIG. 4 operates in the manner described above, except that the type printing is carried out in a different manner.
  • a lever 7 of the embodiment shown in FIG. 4 is pivoted in the clockwise direction, the blocking arm 18' of the lever 46 moves into the ball block 31 of which only one ball 25 is shown for clarity. Only when'the blocking arm 18' does enter the ball block 31 will the corresponding interposer 34 be moved in a counter-clockwise direction through the engaged surfaces 24 and 39.
  • Each interposer 34 is provided with a unique combination of projections such as the projections 38 which are engageable with a corresponding combination of bails such as shown at 35. The rocking of different combinations of bails 35 is effective through a further mechanism, (not shown herein), to appropriately orient a single head printing element for selection of a character to be printed. 7
  • An apparatus for controlling the type printing se- I quences of manually actuatable, power-driven typewriters and similar machines having type printing mechanisms and key levers, comprising, in combination:
  • releasable force means mounted in association with each intermediate member for biasing each intermediate member towards said blocking member and cooperating with said mounting means to automatically 'cause any intermediate member which is in its storage position to move relative to said mounting means along its respective control surface from its storage position toward its released position when said blocking member is free of any other intermediate member and maintaining any intermediate member whose key lever is depressed, while a previously actuated intermediate member is in its released position, in said storage position until such previously actuated intermediate member is moved from its released position.
  • said releasable force means is constituted by a plurality of pretensioned spring members which are each mounted to be in operative contact with a portion of a respective one of said intermediate members, the pretensioning of said spring members occurring positively when said intermediate members return to their rest position.
  • each of said intermediate members is provided with a slot within which said curved control surface is formed.
  • said blocking member comprises a ball block having a plurality of balls retained in a row having two ends, and further including means for resiliently supporting the row of balls at both ends to fix the balls in a center operating position.
  • each of said intermediate members define a blocking arm shaped to extend between adjacent balls of said ball block to actuate an associated type printing mechanism when the respective key lever is depressed, so that while a first intermediate member is moving toward its rest position, a second intermediate member can already be inserted into the ball block for overlapping actuation and a third intermediate member can be stored in its released position.

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  • Accessory Devices And Overall Control Thereof (AREA)
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US00040514A 1969-05-31 1970-05-26 Apparatus for the control of type printing sequences Expired - Lifetime US3759360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1927963*A DE1927963C3 (de) 1969-05-31 1969-05-31 Selbsttätige Steuerung der Typendruckfolgen bei kraft angetriebenen Schreib- und ähnlichen Büromaschinen

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JP (1) JPS4924844B1 (de)
DE (1) DE1927963C3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128382A (en) * 1976-09-22 1978-12-05 Ing. C. Olivetti & C., S.P.A. Keyboard recocking mechanism

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1932914A (en) * 1931-12-08 1933-10-31 Dothan L Shelton Typewriting machine
US1963285A (en) * 1934-06-19 Computing and typewriting machine
US2236413A (en) * 1939-12-26 1941-03-25 Pirnat Fred Typewriter key guide
US2714948A (en) * 1951-07-25 1955-08-09 Sperry Rand Corp Repeat key action for power operated typewriters
US2737279A (en) * 1952-12-13 1956-03-06 Sperry Rand Corp Power operated key action for typewriters and like business machines
US3026984A (en) * 1957-08-15 1962-03-27 Dothan L Shelton Syllabic typewriting machine
US3086635A (en) * 1961-07-14 1963-04-23 Ibm Keylever storage mechanism
US3152759A (en) * 1964-10-13 Interlocked open keyboards with electric restoring
US3181680A (en) * 1963-05-14 1965-05-04 Scm Corp Power control apparatus in a data transferring device
US3191740A (en) * 1962-07-24 1965-06-29 Royal Mcbee Corp Keylever signal storing mechanism
US3353646A (en) * 1966-09-14 1967-11-21 Ibm Typewriter having means to store characters selected during carriage movements

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963285A (en) * 1934-06-19 Computing and typewriting machine
US3152759A (en) * 1964-10-13 Interlocked open keyboards with electric restoring
US1932914A (en) * 1931-12-08 1933-10-31 Dothan L Shelton Typewriting machine
US2236413A (en) * 1939-12-26 1941-03-25 Pirnat Fred Typewriter key guide
US2714948A (en) * 1951-07-25 1955-08-09 Sperry Rand Corp Repeat key action for power operated typewriters
US2737279A (en) * 1952-12-13 1956-03-06 Sperry Rand Corp Power operated key action for typewriters and like business machines
US3026984A (en) * 1957-08-15 1962-03-27 Dothan L Shelton Syllabic typewriting machine
US3086635A (en) * 1961-07-14 1963-04-23 Ibm Keylever storage mechanism
US3191740A (en) * 1962-07-24 1965-06-29 Royal Mcbee Corp Keylever signal storing mechanism
US3181680A (en) * 1963-05-14 1965-05-04 Scm Corp Power control apparatus in a data transferring device
US3353646A (en) * 1966-09-14 1967-11-21 Ibm Typewriter having means to store characters selected during carriage movements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128382A (en) * 1976-09-22 1978-12-05 Ing. C. Olivetti & C., S.P.A. Keyboard recocking mechanism

Also Published As

Publication number Publication date
JPS4924844B1 (de) 1974-06-26
DE1927963C3 (de) 1974-07-11
DE1927963B2 (de) 1973-12-20
DE1927963A1 (de) 1970-12-03

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