US3705774A - Writing instrument - Google Patents

Writing instrument Download PDF

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Publication number
US3705774A
US3705774A US176032A US3705774DA US3705774A US 3705774 A US3705774 A US 3705774A US 176032 A US176032 A US 176032A US 3705774D A US3705774D A US 3705774DA US 3705774 A US3705774 A US 3705774A
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United States
Prior art keywords
writing
writing instrument
ribs
instrument according
tube
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Expired - Lifetime
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US176032A
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English (en)
Inventor
Werner Kranich
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Individual
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Individual
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Priority claimed from DE19702043495 external-priority patent/DE2043495C/de
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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
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/16—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operated by push-buttons

Definitions

  • the present invention relates to a writing instrument, and more especially to a multiple color retractable ball point pen, having a plurality of ink tubes which are arranged in holders and are axially displaceable by pressure on a pressure member, and can be retained in a forwardly displaced writing position, the selection of the ink tube to be moved into the writing position-being effected by holding the pen at an angle and by the con sequential radial displacement of a weight member under the effect of gravity.
  • Writing instruments are known in which selection of the required color is effected by holding the instrument at an inclination and by the consequential radial displacement of a weight member under the effect of gravity, the selected ink tube then being moved forwardly by a pressure member, and the ink tube already disposed in the forwardly displaced position being automatically moved back.
  • rotary ratchet sleeves with indexing slots or cross-shaped ratchet members or ratchet discs are employed for the engagement and disengagement of the forwardly displaced tube or its carrier. Due to the use of such special engaging elements, which are arranged around the tubes, the instrument is somewhat unhandy and moreover of comparatively complicated construction.
  • a writing instrument comprising a plurality of writing members, each of which is arranged in a holder, an axially displaceable tip projection sleeve having an opening therein of a size sufficient to allow only one writing member to pass therethrough, a return spring acting on the tip projection sleeve, a pressure member adapted to exert pressure on all the writing members to thereby axially displace all the writing members and the tip projection sleeve toward a writing position against the action of the return spring, a weight member adapted to be displaced radially under the action of gravity to move a selected one of the writing members into the writing position when the writing instrument is inclined in a selected direction, the tip projection sleeve and writing members being arranged such that on release of the pressure member the non-selected writing members and the said sleeve are urged back into their retracted positions by the return spring while the selected writing member passes through the opening in the sleeve to assume a final writing position.
  • the weight member displaced by inclination of the pen can be constructed as a pendulum rod.
  • the pendulum rod is connected by means of retainer member to the casing in such a manner that it is not axially slidable.
  • a retainer member carrying the pendulum rod and connected to the casing is advantageously also formed, by an arrangement of guide ribs and guide edges, as a guide member and rest position abutment for the tube holders.
  • the holders have corresponding engagement edges which the pendulum rod can engage with its freely swingable end on displacement in a radial direction.
  • the holders have segmental recesses which, when'the holders are at the same axial height, define a cylindrical recess.
  • the radially displaceable weight member is formed in known manner as a ball, then preferably the ball is disposed in a chamber formed by segment-like recesses in the holders.
  • the ball is axially moved when the holders are axially displaced together.
  • the upper part of the instrument has stepped ribs for guiding the holders, the rib steps being formed so that the ball deflected from the central position when the pen is held at an inclination engages behind these steps and holds the required tube in the forwardly displaced position.
  • the holders have at the upper part of their segment-like cross-section abutment shoulders which act as abutments against the upper edge of the ribs of the upper part of the pen.
  • a tip projection sleeve which is subject to the action of a return spring and has an upper collar as a counter-support for the return spring.
  • the other end of the return spring is supported on an annular ledge on the front of the pen.
  • the tip projection sleeve is so formed that it has a conical portion extending around an opening, which conical portion serves as a counter-support for the tips of the tubes.
  • the diameter of the opening is so dimensioned that it allows only one tube to pass therethrough.
  • the tip projection sleeve and the pressure member may be constructed as a one-piece projection part which is closed by a closure knob, engagement ribs on the casing of the pen extending through longitudinal slots in the projection part, and the return spring being disposed within the projection part, and in particular between the closure knob and the upper edges of the ribs-
  • the engagement ribs extending through the longitudinal slots in the projection part advantageously serve as catches for the ball and also as guide ribs for the holders.
  • the holders have segmental sections which, when the holders are moved together to the same axial height, form a chamber serving to receive the ball.
  • the engagementribs are formed with different heights in the radial direction and thereby form engagement edges behind which the ball can engage in the free space between two adjacent ribs when the holders are forwardly displaced, the ball being supported at its other side on the engagement edge of the corresponding holder.
  • the securing of the ring clip is advantageously effected between the closure knob and the end of the projection 1 part or the ring.
  • color retractable ball point pen having a pendulum arrangement for color selection
  • FIG. 2 shows a cross-section through the pen of FIG. 1 taken along the section line II-II;
  • FIG. 3 shows a cross-section through the pen of FIG. 1 along the section line IIllll;
  • FIG. 4 shows a longitudinal section through the pen of FIG. 1, in which all four tubes are forwardly displaced;
  • FIG. 5 shows a cross-section taken along the section line V-V of FIG. 4;
  • FIG. 6 shows a cross-section taken along the section line VI-Vl of FIG. 4;
  • FIG. 7 shows a longitudinal section through the pen of FIG. 1 but with a pre-engaged ink tube
  • FIG. 8 shows a cross-section taken along the section line VIII-VIII of FIG. 7;
  • FIG. 9 shows a cross-section taken along the section line IXIX of FIG. 7;
  • FIG. 10 shows a view from underneath of the retainer member carrying the pendulum of the pen shown in FIG. 1;
  • FIG. 11 shows a longitudinal section of retainer member shown in FIG. 10 with the pendulum broken away;
  • FIG. 12 shows a view from above of the retainer member shown in FIG. 10;
  • FIG. 13 shows a tube holder in cross-section along the section line XIIIXIII of FIG. 14;
  • FIG. 14 shows a longitudinal section through the tube holder shown in FIG. 13;
  • FIG. 15 shows a view from above of the tube holder of FIG. 13;
  • FIG. 16 shows a cross-section through the tip projection sleeve
  • FIG. 17 shows the tip projection sleeve of FIG. 16 viewed from above
  • FIG. 18 shows a longitudinal section through a four color ball point pen with ball engagement
  • FIG. 19 shows a cross-section through the pen of FIG. 18 along the section line XIXXIX;
  • FIG. 20 shows a cross-section through the pen of FIG. 18 along the section line XX-XX;
  • FIG. 21 shows the pen of FIG. 18 with all four tubes in their forwardly displaced positions
  • FIG. 22 shows a cross-section taken along the section line XXIIXXII of FIG. 21;
  • FIG. 23 shows a transverse section taken along the section line XXIIIXXIII of FIG. 21;
  • FIG. 24 shows the pen of FIG. 18 but with a pre-engaged ink tube
  • FIG. 25 shows a transverse section taken along the section line XXV--XXV of FIG. 24;
  • FIG. 26 shows a cross-section taken along the section line XXVI-XXVI of FIG. 24;
  • FIG. 27 shows the upper part of the writing instrument of FIG. 18 in longitudinal section
  • FIG. 28 shows the upper part shown in FIG. 27 viewed from above;
  • FIG. 29 shows a view from below of a tube holder
  • FIG. 30 shows the tube holder of FIG. 29 in longitudinal section
  • FIG. 31 shows a cross-section taken along the section line XXXI- XXXI of FIG. 31;
  • FIG. 32 shows a longitudinal section through a tip projection sleeve
  • FIG. 33 shows the tip projection sleeve of FIG. 32 viewed from above;
  • FIG. 34 shows a longitudinal section through a modified embodiment of the four color ball point pen employing a ball for color selection
  • FIG. 35 shows a transverse section through the pen of FIG. 34 along the section line XXXV-XXXV;
  • FIG. 36 shows a transverse section through the pen of FIG. 34 along the section line XXXVI-XXXVI;
  • FIG. 37 shows a longitudinal section along, the section line xxxvn xxxvn of FIG. 35 with the projection sleeve in its forwardly displaced position;
  • FIG. 38 shows a cross-section taken along the section line XXXVIII-XXXVIII of FIG. 37
  • FIG. 39 shows a cross-section taken along the section line XXXIXXXXIX of FIG. 37;
  • FIG. 40 shows a longitudinal section through the four color ballpoint pen with a pre-engaged ink tube
  • FIG. 41 shows a cross-section taken along the section line XLIXLI of FIG. 40;
  • FIG. 42 shows a cross-section through the pen of FIG. 40 taken along the section line XLIIXLII;
  • FIG. 43 shows a longitudinal section through the casing of the writing instrument
  • FIG. 44 shows a view from below of the casing of FIG. 43;
  • FIG. 45 shows a tube holder viewed from below
  • FIG. 46 shows the tube holder of FIG. 45 in front elevation
  • FIG. 47 shows the tube holder of FIG. 46 viewed from above
  • FIG. 48 shows the tube holder of FIG. 46 in side view
  • FIG. 49 shows the closure button in side elevation
  • FIG. 50 shows the slip-on ring in longitudinal section
  • FIG. 51 shows the projection part formed in one piece with the pressure member in longitudinal section
  • FIG. 52 shows a view from above of the projection part of FIG. 51.
  • FIGS. 1 to 17 there is shown a writing instrument which includes:
  • a two-part ball point pen casing l, 2 having a retainer member 8 which is slidable relative thereto and which carries a pendulum pin 9;
  • a pressure member 4 formed as a press button which is displaceable relative to the casing l, 2;
  • a tip projection sleeve 3 subject to the action of a return spring 12 and displaceable relative to the casing l, 2;
  • the pressure member 4 is in the form of a hollow knob and, when depressed, presses with its under edge against all four tube carriers.
  • the hollow pressure member 4 is prevented from falling out by a threaded bush 5 which also retains a ring clip 6 in the normal manner.
  • the tip projection sleeve 3 is axially displaceably inserted into the front part 2 of the ball point pen casing.
  • a return spring 12 seated at one end on the front edge of the front part 2 and at its other end on a collar 3a on the tip projection sleeve 3 ensures that the tip projection sleeve 3 is resiliently returned.
  • the retainer member 8 is prevented from being axially displaced by ribs 8" in the casing.
  • the lower ends of the ribs 8" are disposed at the height of an abutment edge 1' on the retainer member 8.
  • the under-edge 5' of the threaded bush 5 serves as an upper limit for the ribs 8".
  • the pendulum pin 9 is movably held so that it can pivot to any side laterally or in the radial direction.
  • Each tube holder 7 is so constructed that it is readily axially displaceable relative to the retainer member 8. It has a segment-like recess 70.
  • the segment-like recesses of the holders 7 define, when the holders 7 are all in the same axial position, a cylindrical recess 7c (FIG. 4).
  • An ink tube is inserted in the usual manner into a cylindrical recess 7b in each holder 7 and there retained.
  • An engagement edge 7a serves for retaining the holder 7 in the forwardly displaced position by means of the pendulum pin 9 swung in the radial direction and engaged in this position behind this edge.
  • An edge 7d serves as an upper abutment on the holder against an abutment edge 1 on the retainer member 8.
  • the writing instrument shown in FIGS. 18 to 33 includes:
  • a pressure member 16 which acts on four holders 19, which have ink tubes 21;
  • stepped ribs 13, 13 which serve both to guide the holders 19 and also as engagement edges for the selector ball 20.
  • the holders 19 have segment-like recesses 19k which, when the holders are disposed in the same axial height, define a cylindrical space 19k.
  • the lowermost edges 19a of these recesses 19k are preferably formed inclined as engagement edges for the ball 20.
  • the tubes 21 are fixed in known manner to the holders 19 by pins 19" and longitudinal grooves can be provided in the pins 19" for better ventilation of the tubes.
  • abutment edges 19' are advantageously provided, which limit the forward movement by abutment against the ribs 13.
  • the tip projection sleeve 15 is constructed similarly to that in the preceding embodiment,.but in this case has a somewhat'greater length. Also, in this case, an upper collar 15a is provided for abutment of the return spring 22. Moreover, the conical support surface for the tips 21" of the ball point ink tubes 21 is provided in the front part of this tip projection sleeve 15.
  • the selector ball By holding the pen erect and releasing the pressure on the pressure member 16, the selector ball can return in the axial direction. It then comes to lie between the four ribs 13", whereby the initial position shown in FIG. 18 is reached.
  • the advantages obtained by the present pen are that the construction of the pen is comparatively simple, and the same elements are used for the devices for color selection and for engaging the selected color, whereby a comparatively short construction is obtained which enables correspondingly long ink tubes to be employed. Moreover, both the production and the assembly of the pen are substantially simplified so that the pens can be manufactured comparatively inexpensively.
  • the multiple color ball point pen shown in FIGS. 34 to 52 includes:
  • a projection part 28 which is formed in one piece with the pressure member and which is closed by means of a closure button 29 with a slip-on ring 30 therebetween;
  • ink tube holders 31 with segment-like recesses 32 which, when all of the holders 31 with segment-like recesses 32 which, when all of the holders are moved together to the same axial height, define a chamber 33;
  • a return spring 37 which is arranged within the projection part 28 and which is supported between the closure button 29 and the rib upper edge 38.
  • FIG. 34 shows the multiple color ball point pen in its initial position with the ink tubes 35 retracted.
  • the tip projection sleeve 28 is retracted and the four tube holders 31 are located in an upper rest position, this position being defined by abutment of the lower edges of slots 39 in the tipprojection sleeve 28 against the lower edge of engagement ribs 26 extending through longitudinal slots 39 in the projection part 28 under the action of the return spring 37.
  • the selector ball 34 is disposed in the chamber 33 formed by segment-like recesses 32 in the holders 31.
  • both the holders 31 with their tubes 35 and also the selector ball 34 are moved axially.
  • the opening 41 indicates inclined internal conical surfaces, already known from the above-described embodiments, which converge downwardly to the opening 42.
  • the diameter of the opening 42 is so dimensioned that only one ink tube 35 can pass therethrough.
  • Each pin 44 is provided with a groove 46 for ventilating the tubes 35.
  • the advantages obtained by the present pen are, in particular that the construction of the pen is comparatively simple, and the incorporation of the return spring 37 in the upper part of the projection part makes possible a particularly slim shape for the writing instrument. Moreover, the production and assembly of the pen are very simple, so that the pens can be manufactured comparatively inexpensively.
  • a writing instrument comprising a plurality of writing members, a holder, for each of the writing members, an axially displaceable tip projection sleeve, said sleeve having means thereon defining an opening of a size sufficient to allow only one said writing member to pass therethrough, a return spring, said return spring acting on the tip projectionsleeve, a pressure member, said pressure member being adapted to exert pressure on all the writing members and holders to thereby axially displace all the writing members and the tip projection sleeve toward a writingposition against the action of the return spring, a weight member, said weight member being adapted to be displaced radially under the action of gravity to move a selected one of the writing membersinto the said writing position when the writing instrument is inclined in a selected direction, said tip projection sleeve and said writing members being arranged such that on release of said pressure member the non-selected writing mem bers and the said sleeve are urged .back into their retracted positions by said return spring while
  • a writing instrument in which said tip projection sleeve has an upper collar, said upper collar providing a countersupport for one end of said return spring, the writing instrument further comprising a fixed annular projection for the other end of the return spring.
  • a writing instrument in which said weight member is in the form of a pendulum pin, said pendulum pin being fixed against axial move ment.
  • a writing instrument which includes a retainer member, said retainer member carrying the pendulum pin, the retainer member being provided with an arrangement of guide ribs and guide edges, said guide ribs and guide edges respectively constituting guide members and rest position abutments for said tube holders.
  • each said tube holder is provided with an engagement edge
  • said pendulum pin is provided with a freely swingable end of the pendulum pin, said freely swingable end being adapted to engage the said engagement edge of each tube holder when displaced radially.
  • each tube holder is provided with a segment-like recess,-the said recesses forming a cylindrical chamber when said tube holders are disposed at the same axial height.
  • a writing instrument in which said weight member is in the form of a ball, and each tube holder being provided with a segment-like recess, said ball being arranged such that as said tube holders are moved forward together, the said ball is disposed in a chamber formed by said segment-like recesses in the tube holders.
  • a writing instrument which includes spaced ribs, said spaced ribs being arranged at the end of the writing instrument remote from the writing end thereof, said ribs serving to guide the tube holders and, by means of steps are adapted to engage said ball in the free space between two ribs when the tube holders position have been displaced by said pressure member.
  • a writing instrument in which said tube holders are provided at their segmentlike cross-sections with abutment shoulders, said abutment shoulders serving as abutments against the edge portion of said ribs.
  • a writing instrument in which said tip projection sleeve is provided with an interior conical ledge, said ledge surrounding the said opening and extending downwardly toward the opening.
  • tip projection sleeve and the pressure member are formed as a one-piece projection member, a closure button, said closure button closing said projection member, engagement ribs, said engagement ribs extending through longitudinal slots in the one-piece projection member and the return spring being disposed within the said projection member between the closure button and the upper edges of the ribs.
  • a writing instrument in which said engagement ribs extending through the longitudinal slots in the said projection member serve as catches for a ball of the weight member and are also formed as guide ribs for the tube holders.
  • a writing instrument in which the tube holders have segment-like recesses which, when the tube holders are moved together to the same axial height, define a chamber for receiving the weight member.
  • a writing instrument in which the engagement ribs are formed with different radial heights and thereby form engagement edges behind which weight member can engage in the free space betw en two adjacent ribs when the tube holders are forwar ly displaced, the ball being supported at its other side on the engagement edge of the corresponding tube holder.

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  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US176032A 1970-09-02 1971-08-30 Writing instrument Expired - Lifetime US3705774A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702043495 DE2043495C (de) 1970-09-02 Wechselschreibstift
DE19702059456 DE2059456C (de) 1970-12-03 Mehrfarben Wechselschreibstift mit automatischer Minenruckstellung

Publications (1)

Publication Number Publication Date
US3705774A true US3705774A (en) 1972-12-12

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US176032A Expired - Lifetime US3705774A (en) 1970-09-02 1971-08-30 Writing instrument

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Country Link
US (1) US3705774A (enrdf_load_stackoverflow)
JP (1) JPS5031499B1 (enrdf_load_stackoverflow)
CH (1) CH531423A (enrdf_load_stackoverflow)
FR (1) FR2107129A5 (enrdf_load_stackoverflow)
GB (1) GB1308725A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD395448S (en) 1996-12-13 1998-06-23 Societe Bic S.A. Writing instrument
USD450088S1 (en) 2001-03-05 2001-11-06 Norwood Promotional Products, Inc. Writing instrument
USD472929S1 (en) 2002-06-14 2003-04-08 Inoxcrom, S.A. Pen
USD490109S1 (en) 2002-10-31 2004-05-18 Berol Corporation Marker
US7104196B1 (en) 2005-10-04 2006-09-12 Fong Alexander W Marker assembly, marking method, and kit
US20080101845A1 (en) * 2006-10-31 2008-05-01 Fong Alexander W Marker assembly
US20090154982A1 (en) * 2007-12-12 2009-06-18 University Of Southern California Multicolor writing and painting instruments with multiple, bundled, hard, wear-resistant nibs
USD682938S1 (en) 2012-02-09 2013-05-21 Target Brands, Inc. Writing instrument
USD682939S1 (en) 2012-02-09 2013-05-21 Target Brands, Inc. Writing instrument
USD682937S1 (en) 2012-02-09 2013-05-21 Target Brands, Inc. Writing instrument

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905858A1 (de) * 1989-02-24 1990-08-30 Merz & Krell Mehrfarben-schreibgeraet
FR2933333B1 (fr) 2008-07-01 2012-03-02 Maped Instrument d'ecriture a pointes multiples

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT182985B (de) * 1953-03-11 1955-08-25 Eduard Ing Dinstl Wechselschreibstift mit Drehknopfbetätigung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT182985B (de) * 1953-03-11 1955-08-25 Eduard Ing Dinstl Wechselschreibstift mit Drehknopfbetätigung

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD395448S (en) 1996-12-13 1998-06-23 Societe Bic S.A. Writing instrument
USD450088S1 (en) 2001-03-05 2001-11-06 Norwood Promotional Products, Inc. Writing instrument
USD472929S1 (en) 2002-06-14 2003-04-08 Inoxcrom, S.A. Pen
USD490109S1 (en) 2002-10-31 2004-05-18 Berol Corporation Marker
US7104196B1 (en) 2005-10-04 2006-09-12 Fong Alexander W Marker assembly, marking method, and kit
US20080101845A1 (en) * 2006-10-31 2008-05-01 Fong Alexander W Marker assembly
US20090154982A1 (en) * 2007-12-12 2009-06-18 University Of Southern California Multicolor writing and painting instruments with multiple, bundled, hard, wear-resistant nibs
US20090154983A1 (en) * 2007-12-12 2009-06-18 University Of Southern California Multi-color writing and painting instruments with single nib fed with user-selected colored ink
WO2009076597A1 (en) * 2007-12-12 2009-06-18 University Of Southern California Multicolor writing and painting instruments
US8403577B2 (en) 2007-12-12 2013-03-26 University Of Southern California Multicolor writing and painting instruments with multiple, bundled, hard, wear-resistant nibs
USD682938S1 (en) 2012-02-09 2013-05-21 Target Brands, Inc. Writing instrument
USD682939S1 (en) 2012-02-09 2013-05-21 Target Brands, Inc. Writing instrument
USD682937S1 (en) 2012-02-09 2013-05-21 Target Brands, Inc. Writing instrument

Also Published As

Publication number Publication date
JPS5031499B1 (enrdf_load_stackoverflow) 1975-10-11
FR2107129A5 (enrdf_load_stackoverflow) 1972-05-05
CH531423A (de) 1972-12-15
GB1308725A (en) 1973-03-07

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