US2813511A - Writing instrument - Google Patents

Writing instrument Download PDF

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Publication number
US2813511A
US2813511A US519728A US51972855A US2813511A US 2813511 A US2813511 A US 2813511A US 519728 A US519728 A US 519728A US 51972855 A US51972855 A US 51972855A US 2813511 A US2813511 A US 2813511A
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US
United States
Prior art keywords
unit
writing
clip
barrel
projected
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Expired - Lifetime
Application number
US519728A
Inventor
William H Kersten
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.)
Parker Pen Co Ltd
Original Assignee
Parker Pen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Parker Pen Co Ltd filed Critical Parker Pen Co Ltd
Priority to US51972955A priority Critical
Priority to US519728A priority patent/US2813511A/en
Priority to US519727A priority patent/US2870741A/en
Priority to US52491955A priority
Priority to US572476A priority patent/US2888907A/en
Application granted granted Critical
Publication of US2813511A publication Critical patent/US2813511A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/03Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by flicking or tilting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S7/00Compound tools
    • Y10S7/901Magnetic feature

Description

Nov. 19, 1957 w. H. KERSTEN WRITING INSTRUMENT Filed July 5, 1955 v INVEN TOR. Maw; 16 Rem-i e BY 9% QMCBMW United States Patent llice 2,813,5ill Patented Nov. 19, 1957 William H. Kersten, Janesville, Wis, .assignor to The .Parker 'Pen Company, .Janesville, Wis., .a corporation ofWisconsin Application-M15 5, 1955, SeriallNo. 519,728

5 Claims. c1. nit-42.03

The present invention relates to writing instruments.

The invention relates more particularly to retractable writing instruments of the general type including a barrel or holder and a writing unit having a writing point mounted in the barrel for sliding movement between a retracted position in which the writing point is concealed .in the barrel and a projected position in which the writing point is disposed forwardly beyond the barrel for writing.

object .of the invention is to provide a retractable writing instrument of novel construction in which the writing unit can be projected by a simple manipulation and is solidly and non-yieldingly held .in projected position :until released.

Another object is to provide a retractable writing instrument of the foregoing general character, having a writing .unit releasably held in retracted position, and releasably held in projected position and released therefrom ,and conditioned for retraction by means of novel construction which includes .a yieldable pocket clip ma- 7 nipulable either manually or by insertion of the instrument into the pocket and inserting the pocket piece under the clip.

A further object is to provide :a retractable writing instrument in which the writing unit .is .releasably held in retracted position by magnetic means, .and held .solidily and non-yieldingly in projected position by a fixed shoulder, and released from the shoulder by magnetic means .at least partially in the pocket clip and. rendered active by movement of the clip in inserting a pocket piece under the clip.

Other objects and advantages .of the invention will appear from the following detailed description taken in conjunction with the accompanying drawings wherein:

Fig. 1 is a longitudinal sectional view of a writing instrument embodying the principles of the present invention, and showing the writing unit in projected position;

Fig. 2 is a view similar to Fig. 1 but with the writing unit in retractedposition; and

Fig. 13 .is a cross sectional view taken on line 3--3 of Fig. l.

Referring now in detail to the drawings, the particular writing instrument illustrated is a ball point pen, but it is pointed out that the principles of the invention may be embodied writing instruments of other kinds, such for example, as :a fountain pen, and the invention is not limited to a ball pointpen.

The writing instrument or pen includes .a barrel or holder '12, preferably made up of two sections, a forward section 14 and arearisection 16, which may also be referred to as acap. The material of the barrel may be as desired, such, for example, as plastic or metal. The barreldefines a chamber madeup :of a bore portion 18 in the. front sectionand :abore portion .20 in the rear section or "cap which are .in :alignment when the sections are secured together. The sections are detachably secured together by suitable means such, for example, as a screw threaded connection 24 for quick detachment by the user for replacement or insertion of a writing unit shown generally at 26. The writing unit 26 in the present instance is a ball point writing unit and assuch includes a reservoir 28 which may be of large diameter for retaining the main portion of theink supply, andleading from the reservoir is a stem3'0 of reduced diameter having a ball writing element 32 in its forward end.

The forward bar-rel section 1=4has in its forward end a bore receiving the stem 30 and of such axial dime-nsion thatin all positions of the writing unit the stem has sliding and guiding movement therein. The writing unit is freely slidable in the bore 18, 20 between retracted position of Fig. 2 in which the Writing point is concealed within the barrel, and the projected position of Fig. 1 inwhich the writing point is projected beyond the barrel in a writing position.

Suitable means is provided for moving the writing unit to retracted position and for retaining it in that position which in the present instance takes the form of magnetic means comprising a pair of magnetic elements 38 and 40. At least one of these elements, and preferably the element 38, is a permanent magnet. The latter is suitably secured in the b'ore 20 as by a press fit and positioned for engagement by the element 40 when the writing unit is in retracted position (Fig. 2). The element 40 may be in the form of'ap'lug suitably fitted in the rear end of the casing of the reservoir 28 and closing that end except for 'a small aperture for venting the interior of the writing unit. Upon release of the writing unit from its held projected position, which is done in a manner to be described later, the magnetic means moves the writing element to retracted position. The writing unit may be released from retracted position and moved to projected position "by inertia of the unit in shaking or jarring the pen by the handin forward direction. Magneticmeans for retracting a writing unit in an instrument is claimed broadly in my copending application, Ser. No. 490,818, filed February 28, 1955. The present application is dinected to a novel means for holding the unit in projected position, means for releasing itfrom that position, and magnetic means for retracting the unit.

It is desired to provide for retaining the writing unit in solid or non-yielding projected position. This is done by an internal shoulder 'in the barrel engaged by the writing unit. Such a shoulder is shown at 42 and is positioned to one side of the bore. The shoulder extends circum'ferentially no greater than a semicircle and the rear end of the writing unit when moved laterally into position in line with the shoulder engages (it, to be held in projected position. The bore 20 above the shoulder may be substantially cylindrical in shape(Fig. 3) and dimensioned for free sliding movement ,of the upper end of the writing unit. The dimensions are also preferably such thatthe writing unit. does not have undue side play. To the end of preventing drag between the writing unit and the bore, the plug 4.0 is tapered so that engagement between the plug and surface ,of the bore takes place only in the edge at the upper end of the plug.

The means for moving the writing unit laterally into a holding position for engaging the shoulder preferably takes the form of spring means which is constituted by the pocket clip 44. The clip is secured to the pen barrel in a usual manner and is of resilient nature so that its lower free end is capable of springing action. An aperture or opening lo is formed .in the rear barrel section for receiving the portion 48 of the clip which is bent or shaped inwardly so as to extend through the aperture for .engagement with the writing unit at the upper endwof the latter. When the writing unit is released from. the ,re- 'trac'tjing means by shaking it, .as described above, the unit moves forwardly and after the unit p sses he shoulder, the inner bent portion 48 of the clip, which has constant sliding engagement with the reservoir portion of the unit, moves the upper end of the writing unit laterally into alignment with the shoulder. The plug 40 thus engages the shoulder and provides solid and nonyielding retention of the unit in projected position. As noted from the drawings, the aperture 46 and clip are disposed diametrically opposite the shoulder.

For releasing the writing unit from the shoulder, the spring clip must of course be released from its inner holding position. It is also desired to provide means for actually drawing the writing unit away from the shoulder in response to outward movement or flexing of the clip. This is preferably accomplished by inclusion of magnetic means in the clip which attracts the writing unit in the direction noted. Such a construction may include an insert b which is a permanent magnet and secured in the clip in a suitable manner such as by means of threaded connection. If desired, the clip may be thickened as at 52 for providing greater support for the magnet insert. The inner end of the magnet may be substantially flush with the inner surface of the clip and the clip is preferably so formed so that the clip may easily ride over the pocket piece when the instrument is inserted in a pocket.

Upon flexing the pocket clip outwardly, the magnet 50 attracts the upper end of the writing unit in that direction. For this purpose the casing of the reservoir 28 may be of appropriate metal to form a magnetic element for the magnet or, if desired, the plug 40 may be extended into the casing sufficiently to provide attraction for the magnet. The magnet easily withdraws the upper end of the unit away from the shoulder and when it is so withdrawn and in line with the upper cylindrical portion of the bore 20, it is attracted by the magnet 38, the magnetic means 38-40 being substantially stronger than the magnet 50, and in fact preferably sufficient to retract the writing unit when it is in vertical point-end-down position so that the pen need not be inverted in order for the retraction of the writing unit to be accomplished. The magnet 50 because of its sliding action on the unit in the longitudinal movements of the latter does not, from a practical standpoint, interfere with the action of the retracting magnetic means.

The user may retract the pen by placing a finger or thumb on the lower end of the clip and flexing it outwardly, but if this should be overlooked, the retraction will be accomplished merely by the act of inserting the instrument in the pocket and inserting the pocket piece under the clip, which springs the clip outwardly, to effect retraction as noted above. The lower extremity of the clip is so shaped that the pocket piece easily enters under the clip and cams and flexes the clip outwardly.

The usual manufacturing inaccuracies will enable sufficient play between the stem 30 and the bore 36 to enable the necessary lateral movement of the upper end of the unit which will be very slight in angular dimension, as will be understood, because of the small amount of movement encountered and the length of the unit.

To replace the writing unit 26 the user merely separates the barrel sections whereby the unit will extend out of the section in which it remains usually in the lower section. The user merely grasps the unit and removes it and inserts another. On reassembling the barrel sections the unit will readily pass by the lower end of the clip inside the barrel because of the curved shape of the clip,

I which enables a camming action to be produced.

I claim:

1. A retractable writing instrument comprising a barrel, a writing unit mounted in the barrel for sliding movement between a retracted position and a projected position, means for urging the unit toward and releasably holding it in retracted position, the unit being movable to projected position by inertia action of the unit, the barrel having a shoulder intermediate its ends engageable by the unit in projected position for holding it in that position, a pocket clip on the barrel having a movable portion, and magnetic means including magnetic elements on the clip and unit respectively positioned and effective when the unit is in projected position, in response to outward movement of the clip, for moving the unit out of engagement with the shoulder and into position for retraction by the retracting means.

2. A retractable writing instrument comprising a barrel, a writing unit mounted in the barrel for sliding movement between a retracted position and a projected position, means for urging the unit toward and holding it in retracted position, the barrel having a shoulder engageable by the unit in projected position for holding it in projected position, a pocket clip on the barrel having a movable portion, and magnetic means including magnetic elements on the clip and unit respectively positioned and effective when the unit is in projected position, in response to outward movement of the clip, for moving the unit out of engagement with the shoulder and into position for retraction by the retracting means.

3. A retractable writing instrument comprising a barrel, a writing unit mounted in the barrel for sliding movement between a retracted position and a projected position, a pair of magnetic elements at least one of which is a permanent magnet mounted one in the rear end of the unit and the other in the barrel rearwardly thereof, the barrel having an internal shoulder on one side engageable by the unit in projected position and the unit being movable at least at the portion adjacent the shoulder laterally into a first position engaging the shoulder and a second position away from the shoulder and capable of being retracted by the retracting means, resilient means yieldingly urging the unit laterally into the first said position; said resilient means being manually movable in direction away from the shoulder, and magnetic means in the resilient means and unit respectively operative in response to so moving the resilient means for drawing the unit from the said first position to the said second position.

4. A retractable writing instrument comprising a barrel, a Writing unit contained within the barrel for sliding movemoent between a retracted position and a projected position, retracting means for releasably retaining the unit in retracted position, projection-holding means for releasably retaining the unit in projected position, a release member movable away from said projection-holding means, and a magnetic means for releasing the unit from the projection-holding means to enable retraction by the retracting means, said magnetic means including a magnetic element in said release member and unit respectively operative in response to moving said release member away from said projection-holding means for magnetically drawing the unit away from said projectionholding means to release the unit therefrom for retraction by the retracting means.

5. A retractable writing instrument comprising a barrel, a writing unit having a writing point mounted in the barrel for sliding movement between a retracted position and a projected position, retracting means for releasably holding the unit in retracted position, the unit in projected position having a holding and a released position from only the latter of which it is capable of being retracted by the retracting means, projecting-holding means for engaging the unit in said holding position for retaining it in projected position, resilient means biasing said unit into the projection-holding means for releasably retaining the unit in said holding position, said resilient means being movable to eliminate said biasing, and magnetic means for moving the unit from the said holding position to the said released position, said magnetic means including magnetic elements in the resilient means and unit respectively operative in response to moving said resilient means for magnetically drawing the unit from said holding position to said released position.

(References on following page) 5 References Cited in the file of this patent 2,678,578 UNITED STATES PATENTS 362,121 Spear May 3, 1887 2,536,923 Fehling Jan. 2, 1951 2,580,754 Frentzel Jan. 1, 195 948,908

6 Bonanno May 18, 1954 Salfelder Jan. 21, 1955 OSullivan Feb. 14, 1956 FOREIGN PATENTS France Feb. 7, 1949

US519728A 1955-07-05 1955-07-05 Writing instrument Expired - Lifetime US2813511A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US51972955A true 1955-07-05 1955-07-05
US519728A US2813511A (en) 1955-07-05 1955-07-05 Writing instrument
US519727A US2870741A (en) 1955-07-05 1955-07-05 Writing instrument
US52491955A true 1955-07-28 1955-07-28
US572476A US2888907A (en) 1955-07-05 1956-03-19 Writing instrument

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US519728A US2813511A (en) 1955-07-05 1955-07-05 Writing instrument
US519727A US2870741A (en) 1955-07-05 1955-07-05 Writing instrument
US572476A US2888907A (en) 1955-07-05 1956-03-19 Writing instrument
GB2075256A GB808523A (en) 1955-07-05 1956-07-04 Improvements in retractable writing instruments
DE1956P0016583 DE1182556B (en) 1955-07-05 1956-07-04 Schreibgeraet, particularly pens, with vorschiebbarem by Traegheitswirkung writing insert
FR1155536D FR1155536A (en) 1955-07-05 1956-07-04 The writing instrument as fountain pen and ballpoint pen with retractable writing tip

Publications (1)

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US2813511A true US2813511A (en) 1957-11-19

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Application Number Title Priority Date Filing Date
US519727A Expired - Lifetime US2870741A (en) 1955-07-05 1955-07-05 Writing instrument
US519728A Expired - Lifetime US2813511A (en) 1955-07-05 1955-07-05 Writing instrument
US572476A Expired - Lifetime US2888907A (en) 1955-07-05 1956-03-19 Writing instrument

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Application Number Title Priority Date Filing Date
US519727A Expired - Lifetime US2870741A (en) 1955-07-05 1955-07-05 Writing instrument

Family Applications After (1)

Application Number Title Priority Date Filing Date
US572476A Expired - Lifetime US2888907A (en) 1955-07-05 1956-03-19 Writing instrument

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US (3) US2870741A (en)
DE (1) DE1182556B (en)
FR (1) FR1155536A (en)
GB (1) GB808523A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011258A (en) * 1958-05-23 1961-12-05 Charles J Kotchan Center punch with hammer and magnifier
US3112734A (en) * 1961-07-28 1963-12-03 Sheaffer W A Pen Co Writing implement
US4377349A (en) * 1981-06-12 1983-03-22 Shusaku Kunii Ball point pen
US6684514B2 (en) 2001-04-11 2004-02-03 Robert Welch Center scribing kit for use with drilling templates
US6923588B1 (en) * 2004-12-03 2005-08-02 Ming-Jen Hsieh Retractile mechanism for refill of writing instrument
US20060233591A1 (en) * 2005-04-13 2006-10-19 Dietz Dan L Writing Instrument With Magnetic Clip
US20060239759A1 (en) * 2005-04-23 2006-10-26 Dietz Dan L Illuminated writing instrument
US20060239754A1 (en) * 2005-04-21 2006-10-26 Dietz Dan L Utility Clip For Utilitarian Tools
US20070041777A1 (en) * 2005-08-22 2007-02-22 Dietz Dan L Magnetic spring clip and system
US20070040081A1 (en) * 2005-08-22 2007-02-22 Dietz Dan L Impact guard system for devices
US20070209168A1 (en) * 2005-08-22 2007-09-13 Dan Dietz Magnetic Spring Clip and System
US20160183661A1 (en) * 2012-12-20 2016-06-30 Parfums Christian Dior Device for packaging a product, in particular a cosmetic product

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063419A (en) * 1956-04-02 1962-11-13 Parker Pen Co Writing instruments
US4176979A (en) * 1977-10-31 1979-12-04 Yasushi Saida Ball-point pen
DE3625381C2 (en) * 1986-07-26 1988-04-28 Rotring-Werke Riepe Kg, 2000 Hamburg, De
AT407364B (en) * 1998-09-29 2001-02-26 Trodat Gmbh Pen
DE50311618D1 (en) * 2003-01-02 2009-07-30 Hilmar Nicolay Writing instrument
GB2381243B (en) * 2003-02-18 2003-11-05 Geoffrey Peter Mayne Writing instrument
CA2429153C (en) * 2003-05-17 2005-08-16 Go Simon Sunatori Auto-retractable pen mechanism with a cushion effect
US8100598B2 (en) * 2008-01-01 2012-01-24 Thomas Killion Two-piece magnetically actuated pen
US20100110670A1 (en) * 2008-11-05 2010-05-06 Samuel Werth Magnetically actuated flashlight
FR2945766A1 (en) * 2009-05-19 2010-11-26 Bic Soc MAGNETIC REPULSION WRITING INSTRUMENT
US20100322698A1 (en) * 2009-06-17 2010-12-23 Michael Martin Writing instrument with magnet ink agitator
USD777362S1 (en) 2013-01-01 2017-01-24 Thomas Killion Flashlight
US9583028B2 (en) 2014-08-04 2017-02-28 Thomas Killion Flashlight
EP3400139A4 (en) * 2016-01-08 2020-02-19 Scribe Technical Consulting LLC Writing instrument with magnetic features and quick refill capability

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US362121A (en) * 1887-05-03 Kalph spear
FR948908A (en) * 1947-06-27 1949-08-16 Improvements in ballpoint fountain pens
US2536923A (en) * 1945-09-18 1951-01-02 Eversharp Inc Fountain pen
US2580754A (en) * 1945-11-15 1952-01-01 Parker Pen Co Writing instrument
US2678578A (en) * 1951-08-30 1954-05-18 Joseph L Bonanno Magnetizable hand tool
US2711022A (en) * 1952-10-07 1955-06-21 Everett L Salfelder Perspective demonstrator
US2734484A (en) * 1956-02-14 Ball point pen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510634A (en) * 1945-11-03 1950-06-06 Parker Pen Co Magnetic desk set
US2584569A (en) * 1945-11-17 1952-02-05 Parker Pen Co Ball point writing instrument
FR1004390A (en) * 1947-04-14 1952-03-28 Pressure Mechanism stylomines, fountain pens and similar items
US2693170A (en) * 1949-06-09 1954-11-02 Hartley Pen Company Retractable writing instrument
US2624315A (en) * 1949-09-06 1953-01-06 Kahn David Inc Fountain pen
US2688991A (en) * 1949-10-21 1954-09-14 William V Doyle Magnetic attachment for screw drivers and the like
US2667394A (en) * 1950-04-01 1954-01-26 Dorothy N Goetz Dispenser for articles of magnetic material
US2683931A (en) * 1952-07-24 1954-07-20 Gordon L Fahlgren Knife
US2776646A (en) * 1952-09-22 1957-01-08 Paper Mate Mfg Co Ball point pen
US2773478A (en) * 1953-03-06 1956-12-11 Poinsot William Bernard Cartridge projecting and retracting mechanism for ball point pens
US2676569A (en) * 1953-04-13 1954-04-27 Frawley Corp Gravity type, retractable writing instrument
DE1693832U (en) * 1954-12-04 1955-02-24 Hanns Buelow Schreibgeraet without external betaetigungsorgane for the retractable writing tip.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US362121A (en) * 1887-05-03 Kalph spear
US2734484A (en) * 1956-02-14 Ball point pen
US2536923A (en) * 1945-09-18 1951-01-02 Eversharp Inc Fountain pen
US2580754A (en) * 1945-11-15 1952-01-01 Parker Pen Co Writing instrument
FR948908A (en) * 1947-06-27 1949-08-16 Improvements in ballpoint fountain pens
US2678578A (en) * 1951-08-30 1954-05-18 Joseph L Bonanno Magnetizable hand tool
US2711022A (en) * 1952-10-07 1955-06-21 Everett L Salfelder Perspective demonstrator

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011258A (en) * 1958-05-23 1961-12-05 Charles J Kotchan Center punch with hammer and magnifier
US3112734A (en) * 1961-07-28 1963-12-03 Sheaffer W A Pen Co Writing implement
US4377349A (en) * 1981-06-12 1983-03-22 Shusaku Kunii Ball point pen
US6684514B2 (en) 2001-04-11 2004-02-03 Robert Welch Center scribing kit for use with drilling templates
US6923588B1 (en) * 2004-12-03 2005-08-02 Ming-Jen Hsieh Retractile mechanism for refill of writing instrument
US20060233591A1 (en) * 2005-04-13 2006-10-19 Dietz Dan L Writing Instrument With Magnetic Clip
US20060239754A1 (en) * 2005-04-21 2006-10-26 Dietz Dan L Utility Clip For Utilitarian Tools
US20060239759A1 (en) * 2005-04-23 2006-10-26 Dietz Dan L Illuminated writing instrument
US20070041777A1 (en) * 2005-08-22 2007-02-22 Dietz Dan L Magnetic spring clip and system
US20070040081A1 (en) * 2005-08-22 2007-02-22 Dietz Dan L Impact guard system for devices
US20070209168A1 (en) * 2005-08-22 2007-09-13 Dan Dietz Magnetic Spring Clip and System
US20160183661A1 (en) * 2012-12-20 2016-06-30 Parfums Christian Dior Device for packaging a product, in particular a cosmetic product
US9839277B2 (en) * 2012-12-20 2017-12-12 Parfums Christian Dior Device for packaging a product, in particular a cosmetic product

Also Published As

Publication number Publication date
US2870741A (en) 1959-01-27
US2888907A (en) 1959-06-02
GB808523A (en) 1959-02-04
FR1155536A (en) 1958-05-05
DE1182556B (en) 1964-11-26

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