US2757639A - Writing instrument with retractable point - Google Patents

Writing instrument with retractable point Download PDF

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Publication number
US2757639A
US2757639A US492083A US49208355A US2757639A US 2757639 A US2757639 A US 2757639A US 492083 A US492083 A US 492083A US 49208355 A US49208355 A US 49208355A US 2757639 A US2757639 A US 2757639A
Authority
US
United States
Prior art keywords
stem
writing
operative
jamming
casing
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
Application number
US492083A
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English (en)
Inventor
Wichmann Wilhelm
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.)
Individual
Original Assignee
Individual
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
Priority to BE545721D priority Critical patent/BE545721A/xx
Priority to NL89314D priority patent/NL89314C/xx
Priority to NL205053D priority patent/NL205053A/xx
Application filed by Individual filed Critical Individual
Priority to US492083A priority patent/US2757639A/en
Priority to FR1142215D priority patent/FR1142215A/fr
Priority to GB6927/56A priority patent/GB801230A/en
Application granted granted Critical
Publication of US2757639A publication Critical patent/US2757639A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B43K24/03—Mechanisms 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

Definitions

  • This invention relates to writing implements-more particularly to retractable pens and pencils.
  • Another object of my invention is to enable the writing point to be held locked in its writing position without manipulating any locking element, but merely by holding the instrument in its normal writing position.
  • a further object of this invention is to provide a structure with readily fabricated parts, and that can be readily assembled without the use of skilled labor, or special tools or jigs.
  • Figure 1 is an enlarged longitudinal sectional view of an embodiment of my invention, the illustrated pen being shown in its operative writing position.
  • Figure 2 is a part-sectional, part-elevational view of the device of Figure 1, shown inverted, in its retracted inoperative position.
  • Figure 3 is an exploded fragmentary view of the components of the device of Figure 2. 1
  • Figure 4 is an enlarged longitudinal sectional view of another embodiment of my invention, shown in its operative writing position.
  • Figure 5 is a view substantially like Figure 4 but showing the device inverted, in its retracted inoperative position.
  • the rear outer casing 10 is force-fitted over the centrally-apertured point-carrier guide member 11, the latter having a forwardly extending boss 12 with the externally threaded portion 13 extending into and in threaded engagement with the internally threaded wall 14 of the central cavity 15 of the generally cylindrical connector 16, the latter extending into the rear end of the forward casing 17.
  • the intermediate thickened portion 19 being porportioned to extend between the ends20 and21 of the respective casings 10 and 17.
  • the internal passageway 22 of said guide 11 communicates with the passageway 23 of connector 16, said passageway being proportioned to accommodate the cartridge stem 24 and permit the latters longitudinal movement relative to said casings 10 and 17.
  • the front portion 25 of casing 17 contains therein the axial aperture 26, proportioned to permit the longitudinal movement therethrough of the elongated writing tip 27, carried by said stem 24, during the latters operative movement to be hereinafter describedwhereby.said tip may be operatively moved from its writing position of Fig. 1 to its retracted position of Fig. 2.
  • the rear portion 28 of said rearcasing 10 contains the hollow sleeve 29 fixedly supported in place, said sleeve having an open-ended passageway 30 communicating with the rear well 31 of casing 10 and the somewhat larger open-ended passageway 32.
  • the relative proportions of passageways 30 and 32 are such that a narrow annular shoulder 33 is formed therebetween, the annular internal edge portion 34 of which serves the important function of a jamming ridge to hold said stem 24 in its forward limiting position and said tip 27 in its projected writing position, as will more clearly hereinafter appear.
  • the hollow cylindrical spacer 37 Disposed between and in abutting engagement with the opposing ends 35 and 36 of said sleeve 29 and guide 11, respectively, is the hollow cylindrical spacer 37, the central passageway 38 of which is in communication with passageway 32 and the interior chamber 39 of the forward casing 17.
  • the said stem 24 is proportioned for longitudinal movement through said passageway 38, as well as through said other passageways, so that it may freely moveupon a change of the instruments positions between that of Figure 1 and that of Figure 2-to said stems two limiting positions.
  • the front collar 40 In the operative position (Fig. 1), the front collar 40 is in abutment with the front wall 41; and in the inoperative or retracted position (Fig.
  • the tip portion 27 is completely contained within the casing; while the rear portion 42 of stem 24 is disposed'within the passageway 30.
  • Said rear portion is provided with a rear stop'member which, in the form being described, is separable from the stem.
  • the form of stop member illustrated is ball 43 upon which the rear portion of the stem is resting, in retracted position, the ball in turn resting upon jamming pin 44 supported within well 31.
  • the said ball 43 is proportioned for entry within passageway 30 when the pen is inverted, as shown in Fig. 2; and when the pen is in its operative position shown in Fig. 1, the ball is supported by the rear end portion 42 of hollow stem 24. In said latter position, the ball is spaced from the annular edge portion or ridge 34, to provide an opening 45 for partial entry of said jamming pin 44, in'a manner to be hereinafter described.
  • Said jamming pin 44 comprises a substantially conical head 46, its maximum width being at rear portion 47-- said portion curving rearwardly and inwardly to join the narrow neck 48 connected to the rear body portion 49the latter being preferably of elongated configuration and of greater weight than said head 46.
  • the width of said head at portion 47 is greater than that of said opening 45 when the ball is disposed off at one side, against ridge portion 34a, as shown in Fig. 1.
  • the stem isllnid lbclted in its writing position; and operative writing pressure upon tips 2.7 will not dislodge the stem and the tip from their operative position.
  • the pen is. brought to the position of: Fig. 2.
  • the weighted body portion 49 will then cause the pin 44 to drop back from its jamming position into the well 31; and the ball. 43 and stem 24 will correspondingly move downwardly to the retracted limiting position illustrated-the relative proportions of the pin, ball and stem being such that the tip 27 will be entirely contained within the casing 17-, as aforesaid.
  • the modified form of my invention illustrated in Figs. 4 and 5 contains substantially the same components, except that in place of the ball 43 I employ the cam member 50 comprising the cylindrical body portion 51, the rear inclincd cam surface 52 and the short bottom shaft 53 dis.- posed withintthe hollow rear portion 42 of stem 24.
  • a hollow casing an elongated. cartridge stem disposed within. said casing and operatively movable between two limiting positions, one being a rear retracted inoperative position and the other a forward operative writingposition, an apertured portion at the forward end of the casing and communicating with the interior thereof, said stem having at the front thereof, a terminal portion with a writing tip operatively movable through said apertured portion upon an operative movement of said stem, said casing having an internal annular ridge portion spaced forwardly from the rearmost portion of said casing, said ridge dividing said casing into a rear passageway and a relatively wider front passageway, a stop member at the rear of and movable with said stem, said stop member having a rear end surface generally inclined toward said ridge, a jamming member comprising a conical front end portion and a rear body portion connected therewith by means of a narrow neck.
  • said conicall front portion being engageable with the inclined surface of said stop member to tilt the body portion and move the head portion along said inclined rear end surface by the free falling of said jamming member and the consequent downward movement of the conical front end portion of said jamming member below said ridge to define a jamming position with the stop member bearing against said jamming member and both of said members bearing against opposite sides of said ridge, and said stem being. loosely mounted within said casing whereby it is gravitationally movable between its said two limiting p0 sitions upon an operative movement of said writing instrument between its vertical operative writing position and an inverted: inoperative position.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US492083A 1955-03-04 1955-03-04 Writing instrument with retractable point Expired - Lifetime US2757639A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE545721D BE545721A (enrdf_load_stackoverflow) 1955-03-04
NL89314D NL89314C (enrdf_load_stackoverflow) 1955-03-04
NL205053D NL205053A (enrdf_load_stackoverflow) 1955-03-04
US492083A US2757639A (en) 1955-03-04 1955-03-04 Writing instrument with retractable point
FR1142215D FR1142215A (fr) 1955-03-04 1956-02-29 Instrument d'écriture
GB6927/56A GB801230A (en) 1955-03-04 1956-03-05 Improvements in or relating to writing implements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492083A US2757639A (en) 1955-03-04 1955-03-04 Writing instrument with retractable point

Publications (1)

Publication Number Publication Date
US2757639A true US2757639A (en) 1956-08-07

Family

ID=23954874

Family Applications (1)

Application Number Title Priority Date Filing Date
US492083A Expired - Lifetime US2757639A (en) 1955-03-04 1955-03-04 Writing instrument with retractable point

Country Status (5)

Country Link
US (1) US2757639A (enrdf_load_stackoverflow)
BE (1) BE545721A (enrdf_load_stackoverflow)
FR (1) FR1142215A (enrdf_load_stackoverflow)
GB (1) GB801230A (enrdf_load_stackoverflow)
NL (2) NL205053A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898887A (en) * 1958-06-05 1959-08-11 Scripto Inc Toggle actuated alternate push rocking latch mechanism for retractable ball pen
US3062191A (en) * 1959-08-07 1962-11-06 Scripto Inc Latch mechanism for retractable ball pens adaptable for automatic assembly
US3232278A (en) * 1964-04-20 1966-02-01 Frank T Johmann Writing instrument
US4729685A (en) * 1986-07-26 1988-03-08 Koh-I-Noor Rapidograph, Inc. Writing instrument with press mechanism and magnetic catch
US20060171762A1 (en) * 2003-02-18 2006-08-03 Mayne Geoffery P Writing instrument
US20080253825A1 (en) * 1999-11-05 2008-10-16 Shamitoff Joel B Stylized writing instrument
CN101961966A (zh) * 2010-10-29 2011-02-02 重庆市第三十七中学校 一种具有笔尖自动保护功能的手写笔
US20160375715A1 (en) * 2015-06-25 2016-12-29 Zebra Co., Ltd. Writing utensil with retract piece
WO2018011488A1 (fr) * 2016-07-12 2018-01-18 Societe Bic Dispositif manuel, notamment instrument d'ecriture, equipe d'un dispositif de blocage
US10766297B2 (en) * 2018-04-19 2020-09-08 Societe Bic Hand-held device, in particular a writing instrument, having two retractable heads

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US501850A (en) * 1893-07-18 stuart
US2587935A (en) * 1949-01-10 1952-03-04 Frank C Wallace Retractable pen device
US2676569A (en) * 1953-04-13 1954-04-27 Frawley Corp Gravity type, retractable writing instrument
US2693170A (en) * 1949-06-09 1954-11-02 Hartley Pen Company Retractable writing instrument
US2741226A (en) * 1953-11-03 1956-04-10 Essex Corp Ball pen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US501850A (en) * 1893-07-18 stuart
US2587935A (en) * 1949-01-10 1952-03-04 Frank C Wallace Retractable pen device
US2693170A (en) * 1949-06-09 1954-11-02 Hartley Pen Company Retractable writing instrument
US2676569A (en) * 1953-04-13 1954-04-27 Frawley Corp Gravity type, retractable writing instrument
US2741226A (en) * 1953-11-03 1956-04-10 Essex Corp Ball pen

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898887A (en) * 1958-06-05 1959-08-11 Scripto Inc Toggle actuated alternate push rocking latch mechanism for retractable ball pen
US3062191A (en) * 1959-08-07 1962-11-06 Scripto Inc Latch mechanism for retractable ball pens adaptable for automatic assembly
US3232278A (en) * 1964-04-20 1966-02-01 Frank T Johmann Writing instrument
US4729685A (en) * 1986-07-26 1988-03-08 Koh-I-Noor Rapidograph, Inc. Writing instrument with press mechanism and magnetic catch
US20110070013A1 (en) * 1999-11-05 2011-03-24 Shamitoff Joel B Stylized writing instrument
US20080253825A1 (en) * 1999-11-05 2008-10-16 Shamitoff Joel B Stylized writing instrument
US7677825B2 (en) * 1999-11-05 2010-03-16 Shamitoff Joel B Stylized writing instrument
US20060171762A1 (en) * 2003-02-18 2006-08-03 Mayne Geoffery P Writing instrument
US7296942B2 (en) * 2003-02-18 2007-11-20 Geoffrey Peter Mayne Writing instrument
CN101961966A (zh) * 2010-10-29 2011-02-02 重庆市第三十七中学校 一种具有笔尖自动保护功能的手写笔
CN101961966B (zh) * 2010-10-29 2013-04-17 重庆市第三十七中学校 一种具有笔尖自动保护功能的手写笔
US20160375715A1 (en) * 2015-06-25 2016-12-29 Zebra Co., Ltd. Writing utensil with retract piece
US9914322B2 (en) * 2015-06-25 2018-03-13 Zebra Co., Ltd. Writing utensil with retract piece
WO2018011488A1 (fr) * 2016-07-12 2018-01-18 Societe Bic Dispositif manuel, notamment instrument d'ecriture, equipe d'un dispositif de blocage
FR3053924A1 (fr) * 2016-07-12 2018-01-19 Societe Bic Dispositif manuel, notamment instrument d'ecriture, equipe d'un dispositif de blocage
US10807405B2 (en) 2016-07-12 2020-10-20 Societe Bic Hand-held device, in particular a writing instrument, provided with a blocking device
US10766297B2 (en) * 2018-04-19 2020-09-08 Societe Bic Hand-held device, in particular a writing instrument, having two retractable heads

Also Published As

Publication number Publication date
NL205053A (enrdf_load_stackoverflow)
GB801230A (en) 1958-09-10
FR1142215A (fr) 1957-09-16
NL89314C (enrdf_load_stackoverflow)
BE545721A (enrdf_load_stackoverflow)

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