US3400799A - High speed type action - Google Patents

High speed type action Download PDF

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Publication number
US3400799A
US3400799A US633467A US63346767A US3400799A US 3400799 A US3400799 A US 3400799A US 633467 A US633467 A US 633467A US 63346767 A US63346767 A US 63346767A US 3400799 A US3400799 A US 3400799A
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US
United States
Prior art keywords
coupling
operating
lever
operating lever
type action
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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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US633467A
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English (en)
Inventor
Stuiber Walter
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.)
TA Triumph Adler GmbH
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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Filing date
Publication date
Application filed by Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Application granted granted Critical
Publication of US3400799A publication Critical patent/US3400799A/en
Assigned to TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INFORMATIONSTECHNIK reassignment TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INFORMATIONSTECHNIK CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE 8/13/80 Assignors: TRIUMPH WERKE NURNBERG AKTIENGESELLSCHAFT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J23/00—Power drives for actions or mechanisms
    • B41J23/02—Mechanical power drives
    • B41J23/12—Mechanism driven by cams engaging rotating roller

Definitions

  • High speed typing mechanisms require type actions which return very fast to the initial position of rest in order to be ready for the next actuation.
  • the driven operating means which actuate the type bar must be quickly stopped after the imprint has been made, and recoil and bouncing back must be prevented.
  • the type action disclosed in the U.S. Patent 3,225,884 permits relative movement between a lever which is connected with a type bar, and another lever which is driven by the power roll.
  • the driven lever may bounce back and move relative to the first lever and consequently may not be in a position of readiness when the type action is again actuated by a key lever.
  • Another object of the invention is to couple during the type bar actuation, parts of the type action which are mounted for relative movement, so that these parts move together during part of the movements of the type action.
  • the present invention relates to a type action which comprises first operating means connected with a type element, second operating means cooperating with the power roll and connected with the first operating means, coupling means operable for connecting the first and second operating means, spring means biasing the coupling means toward an engaged position, and stop means for holding the coupling means in a disengaged position while the first and second operating means are in a position of rest.
  • the coupling means When after a key actuation, the power roll drives the first and second operating means, the coupling means is moved away from the stop means and is free to move to the engaged position for coupling the first and second operating means during parts of the forward typing stroke and the return stroke. Due to this connection, bouncing or recoil movements of the operating means are prevented. Near the end of the return stroke, the coupling means engages the stop means and is returned by the same to the normal disengaged position.
  • the couice pling means includes a coupling member in the form of a latch pivotally mounted on a first operating lever, and a recess in a second operatin lever.
  • the stop means is preferably constructed as a comblike structure having prongs laterally guiding the first operating levers of a series of type actions, and serving as individual stops for the coupling members of the type actions.
  • a biasing means urges the operating means to a position of rest in which the second operating lever abuts a fixed abutment, while the first operating lever abuts an abutment on the second operating lever.
  • FIG. 1 is a fragmentary side elevation, partially in section, illustrating a type action according to the invention in the position of rest as viewed from one side;
  • FIG. 2 is a corresponding elevation illustrating the type action while being driven by the power roll
  • FIG. 3 is a corresponding elevation illustrating the type action after producing an imprint
  • FIG. 4 is a fragmentary perspective view illustrating a detail of a type action.
  • FIG. 5 is a fragmentary elevation of the type action as viewed from the other side.
  • a frame structure 1 has open slots 1a in which first operating levers 2 are mounted on a shaft 1b for pivotal movement.
  • Wire links 3 connect operating levers 2 with pivotally mounted type bars 4.
  • a biasing spring 2a is connected to each operating lever 2, of which only one is shown in the drawing, and urges the respective operating lever2 to turn in counterclockwise direction to a position of rest illustrated in FIG. 1.
  • Another shaft 5 is also mounted on the frame structure of the machine, and supports a series of key levers 6 for angular movement.
  • Each key lever 6 has a portion 6a with a pin 6b located in the slot 7b of an actuating member 7 which has an angular end portion 7a cooperating with a fulcrum member 70 which is mounted on the frame of the machine.
  • a spring 71 connects actuating member 7 with key lever 6 and urges actuating member 7 into engagement with an abutment shaft 72.
  • a second operating lever 9 is mounted on the first operating lever 2 for pivotal movement by means of a pivot connection 10.
  • actuating member 7 is turned about fulcrum member 70 and engages arm 8 of operating lever 9 so that the same turns about pivot pin 10 .and engages power roll 12 by its engaging portion 11.
  • the power roll rotates in counterclockwise direction so that operating lever 9 is driven to turn in clockwise direction until its arm 8 abuts an adjustable abutment 23, as described in detail in the U.S. Patent 3,225,884.
  • a comb-like structure 20 extends across the type actions and has curved prongs 19 forming between each other slots in which operating levers 2 are guided when the type action is operated, as best seen in FIG. 3.
  • Each operating lever 2 carries a pivot 13 on which a coupling latch 14 is mounted for turning movement.
  • Coupling latch 14 has an angular coupling portion 16, best seen in FIG. 4, which has a hole into which the end of a spring is hooked. The other end of the spring is attached to a projection 9a of operating lever 9 which has an angular coupling recess 17 matching the outline of the angular coupling portion 16.
  • Spring 15 urges coupling latch 14 toward coupling recess 17, but in the position illustrated in FIG. 1, a stop portion 18 of coupling latch 14 abuts a corresponding prong 19 of stop means as best seen in FIG. 4 so that latch 14 cannot engage coupling recess 17.
  • Stop portion 18 is preferably slightly bent in axial direction of pivot pin 13.
  • coupling means 14, 16, 17, 18 couples the first and second operating levers 2 and 9, abutment portion 22 and stop portion 21 abut each other, and a relative movement between the operating levers is not possible and bouncing or recoil movements of operating lever 9 relative to operating lever 2 are prevented.
  • the arrangement of coupling means 16, 17 is such that the coupling member 16 is disengaged by a stop prong 19 to permit a rapid return of operating lever 9 to its initial position of rest shown in FIG. 1 at the end of the return stroke.
  • a type action having a first lever connected with a type bar and a second lever pivotally connected with said first lever and adapted to be driven by a power roll
  • the improvement comprising coupling means having a coupling member mounted on one of said levers, and spring means connecting said coupling member with the other lever so as to provide a yielding connection between said first and second levers during actuation of said second lever by the power roll, said spring means moving said coupling member to a position in which it rigidly couples said first and second levers for movement together after release of said second lever by the power roll, and thereby prevents bouncing back of said levers.
  • a type action comprising, in combination, a type element; first operating means connected with said type element; second operating means adapted to cooperate with a power roll; connecting means connecting said first and second operating means for relative movement; biassing means urging said first and second operating means and said type element to positions of rest; key controlled means for moving said second operating means into engagement with the power roll so that the latter drives said second operating means to an operative position;
  • said coupling means include a coupling latch mounted on one of said operating means, and a coupling recess in the other operating means engaged by said coupling latch for connecting said first and second operating means for movement together; and wherein said spring means is connected to said coupling latch and said other operating means.
  • first and second operating means include first and second operating levers
  • said connecting means include a pivot means connecting said first and second operating levers for relative turning movement
  • said coupling means includes a coupling latch pivotally mounted on said first operating lever and a coupling recess in said second operating lever, said coupling latch engaging said coupling recess in said engaged position of said coupling means for rigidly coupling said first and second operating levers for movement together
  • said spring means connects said'coupling latch with said second operating lever.
  • each coupling means includes a coupling member pivotally mounted on said first operating means; and wherein said stop means of each type action is a prong of a comb-like structure extending across said type action.
  • said first and second operating means include first and second operating levers, respectively, wherein said connecting means include pivot means connecting said first and second operating levers for relative turning movement; comprising supporting structure supporting said first operating lever for turning movement; wherein said first and second operating levers have ahutments engaging each other in said position of rest under the action of said biassing means; and wherein said second operating lever has an engaging portion cooperating with the power roll, and abuts said supporting structure in said position of rest.
  • said coupling means include a coupling latch pivotally mounted on said first operating lever and being urged by said spring means to engage said stop means in said position of rest; wherein said second operating lever has a slanted face engaged by said coupling latch during movement of said second operating lever to said operative position,
  • stop means includes at least one guide slot for guiding said first operating lever, and at least one prong adjacent said guide slot for engaging and stopping said coupling latch in said position of rest.
  • said coupling latch has a first portion pivotally mounted on said first operating lever, and an integral second angular coupling portion; and wherein said coupling recess of said second operating lever is angular and matches the outline of said coupling portion of said coupling latch.
  • a type action as claimed in claim 2 comprising an adjustable abutment engaged by said second operating means during movement from said position of rest to said operative position so that said first operating means and said type element move relative to said second operating means until said coupling means assumes said engaged position for coupling said first and second operating means.

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  • Accessory Devices And Overall Control Thereof (AREA)
US633467A 1966-04-30 1967-04-25 High speed type action Expired - Lifetime US3400799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG46751A DE1263029B (de) 1966-04-30 1966-04-30 Typenhebelgetriebe fuer kraftangetriebene Schreib-, Buchungs- oder aehnliche Maschinen

Publications (1)

Publication Number Publication Date
US3400799A true US3400799A (en) 1968-09-10

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Application Number Title Priority Date Filing Date
US633467A Expired - Lifetime US3400799A (en) 1966-04-30 1967-04-25 High speed type action

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US (1) US3400799A (enrdf_load_stackoverflow)
DE (1) DE1263029B (enrdf_load_stackoverflow)
NL (2) NL6702731A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623587A (en) * 1968-04-20 1971-11-30 Triumph Werke Nuernberg Ag Type action drive
US3981385A (en) * 1974-08-28 1976-09-21 Scm Corporation Typing machine key action

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896765A (en) * 1958-04-08 1959-07-28 Royal Mcbee Corp Trip pawl control mechanism
US2897941A (en) * 1957-11-12 1959-08-04 Ibm Type bar trip mechanism
US3300018A (en) * 1963-06-04 1967-01-24 Royal Typewriter Co Inc Type bar action having combined cam latching and driving lever
US3327831A (en) * 1965-04-09 1967-06-27 Paillard Sa Assisted control device for an operation in a typewriter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188088B (de) * 1960-01-12 1965-03-04 Grundig Max Tastenwerk fuer kraftangetriebene Schreib- und aehnliche Maschinen
AT224367B (enrdf_load_stackoverflow) * 1960-12-24 1962-11-26 Grundig Max

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897941A (en) * 1957-11-12 1959-08-04 Ibm Type bar trip mechanism
US2896765A (en) * 1958-04-08 1959-07-28 Royal Mcbee Corp Trip pawl control mechanism
US3300018A (en) * 1963-06-04 1967-01-24 Royal Typewriter Co Inc Type bar action having combined cam latching and driving lever
US3327831A (en) * 1965-04-09 1967-06-27 Paillard Sa Assisted control device for an operation in a typewriter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623587A (en) * 1968-04-20 1971-11-30 Triumph Werke Nuernberg Ag Type action drive
US3981385A (en) * 1974-08-28 1976-09-21 Scm Corporation Typing machine key action

Also Published As

Publication number Publication date
DE1263029B (de) 1968-03-14
NL129293C (enrdf_load_stackoverflow)
NL6702731A (enrdf_load_stackoverflow) 1967-10-31

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Owner name: TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INF

Free format text: CHANGE OF NAME;ASSIGNOR:TRIUMPH WERKE NURNBERG AKTIENGESELLSCHAFT;REEL/FRAME:003935/0913

Effective date: 19800813