US3019767A - Writing instrument, more particularly a ball-point pen - Google Patents

Writing instrument, more particularly a ball-point pen Download PDF

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Publication number
US3019767A
US3019767A US103A US10360A US3019767A US 3019767 A US3019767 A US 3019767A US 103 A US103 A US 103A US 10360 A US10360 A US 10360A US 3019767 A US3019767 A US 3019767A
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US
United States
Prior art keywords
nut
spindle
writing
cartridge
ball
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
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US103A
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English (en)
Inventor
Ambros Hans
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Individual
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Individual
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Publication date
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Publication of US3019767A publication Critical patent/US3019767A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons

Definitions

  • the present invention relates to a writing instrument, and more particularly to a ball-point pen having a writing cartridge which is axially supported in a barrel and with abutment means which is indirectly or directly urged by a return spring into a notch of a non-rotatable shifting sleeve which comprises one or more shallow notches.
  • the change from one notch to another being accomplished by depressing a push button which projects from the end of the barrel and acts on the writing cartridge.
  • a lug abuts during the shifting from one notch to another against oblique surfaces provided on the shifting sleeve, whereby the lug carrier is rotated in relation to the shifting sleeve. After some time the oblique surfaces become worn which soon causes trouble in the use of the writing instrument.
  • this is achieved by supporting in the shifting sleeve a nut which is axially movable and rotatable and which comprises the abutment or lug, a spindle adapted to be axially displaced by means of the push button projecting through said nut in such a manner that the nut by means of a spring is urged on the spindle into the next shifting position as soon as the lug has left the notch in which it has been engaged.
  • FIG. 1 is a longitudinal sectional view of a ball-point pen according to the invention, with the parts thereof in the inoperative position;
  • FIG. 2 shows the ball-point pen illustrated in FIG. 1, partly in longitudinal section and with the parts thereof in another position;
  • FIG. 3 is another partial longitudinal section of the writing instrument shown in FIG. 1, in still another position and
  • FIG. 4 is a longitudinal sectional view of another ballpoint pen embodying the invention.
  • the ball-point pen shown in FIGS. 1 to 3 of the drawings comprises a hollow barrel 1 into the rear end of which is screwed a sleeve 2 which is provided with a bottom 3 and encloses the shifting mechanism.
  • the sleeve 2 is firmly closed by a cap 4 the inwardly directed portion of which is formed as a shifting sleeve by providing the edge thereof with two shallow notches 6 (FIG. 3) and two deep notches 7 (FIG. 2) which are arranged in alternating sequence.
  • a nut 8 which may be made of plastic material and on the periphery thereof is provided with diametrally opposite abutment lugs or ledges 9 which are urged into the notches 6 or 7 by a spring 10 bearing against the bottom 3 and on the nut 8.
  • the nut 8 is internally threaded with a coarse pitch thread and is traversed by a spindle 11 which has a similar mating coarse pitch thread, the rear end of the atent ice spindle being rigidly secured in a push button 12 which projects through the cap 4.
  • the thread of spindle 11 is somewhat longer than the nut 3 so that the nut moving on the spindle will make. a part of a revolution as it moves from one end'of the spindle to the other.
  • the front end of the spindle 11 carries an end disk 13 and bears against the end of a Writing cartridge 14 which is subject to the action of a return spring 15 and is slidably guided in the barrel 1.
  • the rear end of the writing cartridge projects througha central bore in the bottom member 3 into contact with the bottom end of spindle 11 at disc 13.
  • FIG. 1 shows the ball-point pen in the inoperative position with the writing cartridge retracted.
  • the push button 12 is depressed, generally with the thumb. Thefriction between thumb and push button 12 thereby prevents rotation of the button and of the spindle. The nut is prevented from rotating by lug 9 bearing against the side of notch 7.
  • Push button 12, spindle 11, nut '8 and writing cartridge 14, therefore move forward without rotation while the springs 10 and 15 are compressed.
  • FIG. 2 illustrates this operation during which the lugs 9 of which only one may be seen, move out of the deep notches 7.
  • the drawing shows the parts of the writing instrument in the position which they occupy shortly before the lug 9 leaves the deep notch 7.
  • the nut 8 will be rotated on the spindle 11 to the right in FIG. 2, under the effect of the spring 10 that forces the nut S upward on spindle 11. Because the nut 8 is now free of the restraint of lug 9 bearing on the side of notch 7, nut 8 rotates a part turn and stops, as seen in FIG. 3, with the top of nut 8 against the bottom of push button 12.
  • the device then is in position similar to that of FIG- URE 1 so that when the push button 12 is again depressed, the operation just described is repeated.
  • FIG. 4 differs from that shown in FIGS. 1 to 3 insofar as a spindle 11 is not rigidly but loosely mounted in the push button 16.
  • the nut 17 which is provided with short lugs 9' abuts against a clamping sleeve 18 which through the intermediary of a return spring 19 bears against the bottom 3' of sleeve 2'.
  • a Writing cartridge 20 is removably mounted in the clamping sleeve 18 so that it can readily be exchanged.
  • FIG. 4 The operation of the instrument shown in FIG. 4 is substantially the same as that of the other embodiment shown in FIGS. 1 to 3 with the difference, however, that the spindle 11' does not rotate With the push button '16, but the spindle 11' can rotate together with the writing cartridge 20.
  • the elements in FIG. 4 that are similar to the elements in FIGS. 1, 2 and 3 are designated by the same reference characters raised to prime.
  • Spring 5 19 is the equivalent of spring 15 of FIGS. 1-3 and spring 17 is the equivalent of spring 10 of FIGS. 1-3.
  • a mechanical Writing device or the like of the type having a hollow barrel 2. writing cartridge having a writing point positioned axially of said cartridge and axially movable therein to be positioned with its Writing point in an extended operative position or in a retracted inoperative position, the improvement comprising a nut axially and rotatably mounted in the end of said barrel remote from said writing point, at least one axially extending lug on the outer surface of said nut, a cap on said barrel adjacent said nut, a shifting sleeve on said cap engageable by said lug, said shifting sleeve being provided with at least one shallow and one deep notch into which said lug may penetrate when moved axially toward said shifting sleeve to position said writing cartridge in extended or retracted position, respectively, a threaded spindle threaded within said nut, the pitch of threads of said spindle and nut being so great as to normally rotate said nut upon axial movement of said spindle, said shallow and said deep not
  • a writing instrument characterized by a combination or" a barrel assembly, a spring loaded cartridge Within said barrel assembly in axial slidable arrangement therewith between an inoperative position with the cartridge retracted within the barrel and a projected writing position with the point of the cartridge exposed through the barrel, the rear end portion of said barrel assembly having shallow and deep notches arranged therein in alternating sequence, a threaded nut within the barrel assembly adjacent said portion, abutment means on said nut receivable in said notches to define the writing and inoperative positions, respectively, of said cartridge, an actuating spring within said barrel adapted to press said abutment means against said notches, a threaded spindle axial y projecting into said nut, the threads of said spindle and nut operating to rotate said spindle and nut relative to each other upon relative axial movement therebetween, and a push button arranged in said barrel assembly and in axial alignment with said spindle for moving said spindle axially in a direction to move said abutment means from

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US103A 1959-01-12 1960-01-04 Writing instrument, more particularly a ball-point pen Expired - Lifetime US3019767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW24829A DE1228531B (de) 1959-01-12 1959-01-12 Schreibgeraet, insbesondere Kugelschreiber, mit Druckmechanik

Publications (1)

Publication Number Publication Date
US3019767A true US3019767A (en) 1962-02-06

Family

ID=7597939

Family Applications (1)

Application Number Title Priority Date Filing Date
US103A Expired - Lifetime US3019767A (en) 1959-01-12 1960-01-04 Writing instrument, more particularly a ball-point pen

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Country Link
US (1) US3019767A (de)
CH (1) CH376801A (de)
DE (1) DE1228531B (de)
FR (1) FR1245189A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205864A (en) * 1963-03-21 1965-09-14 Eagle Pencil Co Writing implement
USD406276S (en) * 1994-04-20 1999-03-02 Alvarado Antonio C Writing light

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236976B (de) * 1961-05-16 1967-03-16 C Josef Lamy Kugelschreiber mit durch eine Druckknopfschaltung verschiebbarer, bei jedem Schaltvorgang um ihre Laengsachse gedrehter Schreibmine
DE202017103808U1 (de) 2017-06-27 2017-08-17 Twinvay Ug (Haftungsbeschränkt) FlipPen - Kombination aus Handspielzeug und mindestens einem Schreibgerät, vorzugsweise mit mindestens einem Präsentationsgerät

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR621729A (fr) * 1926-01-21 1927-05-16 Interrupteur à double rupture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR621729A (fr) * 1926-01-21 1927-05-16 Interrupteur à double rupture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205864A (en) * 1963-03-21 1965-09-14 Eagle Pencil Co Writing implement
USD406276S (en) * 1994-04-20 1999-03-02 Alvarado Antonio C Writing light

Also Published As

Publication number Publication date
CH376801A (de) 1964-04-15
FR1245189A (fr) 1960-11-04
DE1228531B (de) 1966-11-10

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