US2866437A - Writing implement - Google Patents

Writing implement Download PDF

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Publication number
US2866437A
US2866437A US535086A US53508655A US2866437A US 2866437 A US2866437 A US 2866437A US 535086 A US535086 A US 535086A US 53508655 A US53508655 A US 53508655A US 2866437 A US2866437 A US 2866437A
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US
United States
Prior art keywords
carrier
advanced
writing
casing
bore
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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
Application number
US535086A
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English (en)
Inventor
Fend Kurt
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.)
FEND FA GEB
Gebr Fend Firma
Original Assignee
FEND FA GEB
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Filing date
Publication date
Application filed by FEND FA GEB filed Critical FEND FA GEB
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Publication of US2866437A publication Critical patent/US2866437A/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
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/12—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operating by means sliding in longitudinally-slotted casings

Definitions

  • the present invention relates to writing implements of the type in which a. shiftable carrier of a writing means is advanced and retracted, and more particularly to an arrangement for supporting a shiftable carrier in the front end of thewriting implement whilethe-carrier and the Writing means are in operative writing position.
  • a writing implement which comprises a hollow casing having; a front end part formed with -a bore and being at least partly bounded by an annular surface; at leastone carrier for writing means mounted in said casing formovernent between a retracted inoperative position, an advanced writing position, and a pre liminary advanced position located forwardly of said'advanced writing position, said carrier-projecting only in said advancedripositions through saidl'b'ore, said carrier defining in said advanced positions withTsaid annular surface an annular gap having a rear portion and a front portion; and wedging means resilient in direction of the.
  • the resilient tubular wedging means is a coil spring. If the writing implement is of the type in which the carrier of the writing means is first advanced to a preliminary advanced position andv then retracted to normal writing position, the, coil spring is compressed in the; preliminary advanced position and expanded in the nor.-
  • Fig. l is a side view, partly in section, of a writing plement according to the present invention shown-in a,
  • Fig. 2 is a sectional view .of a writingimplement ac cording to the present invention shown in an-operative advanced position; x I
  • Fig. 3 is a fragmentary sectional view of, a detail of Fig. 1 shown on an enlarged scale;
  • Fig. 4 is a fragmentary sectional view of a detail of Fig. 2 shown on an enlarged scale.
  • the writingimplement shown therein is illustrated to be of the type in which a plurality of carriers for writing means can be selectively advanced and retracted so that itis possible to write in different colors.
  • r p v The casing l is formed with longitudinally extending slots 2, each slot guiding a manually operated member 3 which is connected to one'of the carriers 11.
  • the im-' plement shown in the drawing has four carriers, .a'nd is clearly shown in Fig. 2, when one of the carriers 11': is
  • Each carrier 11 includes a cylindrical front end por tion 4, and a rearwardly located hollow portion 11a which is constricted at its rear end 11b.
  • A'rod 12 passes through a bore into the hollow portion 11a and has at its forward end an abutment 12a.
  • a spring 10 is said'car'rier and a'frontend portion non-resilient in'directions' transversev to said direction of carrier movement arranged between the abutment 12a and the rear end 11b of the hollow portion 11a.
  • the rear end 12b of the rod 12 abuts against a transverse plate 1a fixed in the casing 1 so that the spring 10 tends to retract the carrier 11 from the advanced position in which one carrier vl1 is shown in Fig. 1, to an operative advanced position shown in Fig. 2 and to a retracted position located within the casing in which two other carriers 11 are shown in Fig. 2.
  • the well known operatingmechanism is not Patented Dec 30, 8 1
  • the operated carrier is first advanced to a preliminary advanced position shown in Figs. 1 and 3 and then slightly retracted, to an operative advanced writing position shown In Figs. 2 and 4 in which position the implement is ready for writing.
  • the carriers 11 are operated by manually operated members 3,. and if any one of the carriers is moved into the preliminary advanced position shown in Fig. l, and the respective member 3 is released, the spring 10 retracts the. respective carrier into the writing position shown in Fig. 2 where the carrier is arrested in a known manner so as to be immovable in axial direction.
  • the arrested operative carrier is released when. any other carrier is advanced by advancing another member 3 associated therewith.
  • the previously operative carrier is thus released, it returns to retracted position under the action of the return spring 10.
  • the holding meahs for arresting a carrier in the writing positioninthedllustrated embodiment are described in detail inrnyprior U. S. Patent 2,136,290.
  • the invention is not limited for use in a multiple writ- .ing implement, but may be applied to any writing implement in which a carrier is arrested in'advanced writing position, and may be released after use for return into an inoperative, retracted position.
  • the cylindrical end portion 4 of the carrier 11 projects through the bore 5 in the front end part 6 of the casing 1.
  • the interior of the casing 1* is bounded at the front end of the casing 6 by a conical surface 9 which merges into the rearwardly located'portion of the bore 5 so that at least the rearwardly located annular surface 5a of the bore 5 is slightly conical and tapers toward the front end of the casingZ.
  • the conical suface may extendto the front end, of ,bore 5.
  • a resilient tubular ,means shown to be a coil spring 7, surrounds a portion of thecylindrical carrier end portion 4.
  • An abutment 8 is fixedly secured to the carrier ll, and engages the rearwardlylocated portion of the coil spring 7 which is freely movable on the cylindrical end portion 4.
  • the rear end of the coil Spring 7 can be wound so tightly about carrier end portion 4. that it held-thereon for movement with the carrier 11, butitcan also be secured to the carrier inany suitable manner.
  • the rear end of the coil spring 7 can pass into a transverse bore in the endportion 4 located adjacent the abutment 8. 7 As is apparent from Fig. 2, the coil spring 7 is inoperative when the. carriers, areretracted.
  • the respective carrier 11 When a carrier 11 is advanced by operation of the gripsmember 3, the respective carrier 11 is first advanced into a preliminary advanced positionshown in Figs. 1 and 3 in which, the forwardly located annular wedging portion 7a of thecoil spring,7 projects into the annular gap 13 formed by the conical surface portion 5a and the cylindrical. surface of the carrier end portion 4.
  • the coil spring 7 is compressed in this position so that its for wardly located end is wedged into the gap 13 which tapers toward the front, end of the casing.
  • the carrier 11 is automatically retracted by spring to the operative advanced writing position shown in. Fig. 2 in which thewriting means 4a, such as a ball point or a lead, canbe used.
  • Arresting means for example as described -in my U. S. Patent 2,136,290 arrest thecarrier, in this position until another carrier 11 is adsvanced by operation, of its associated operating mem- Since the, forwardly located portion. 7a of the coil spring is wedged into the annular reduced gap13, and the rearwardly located portion 7b of the coil spring is secured to the. carrier 11, the coil spring 7 expands during'movement of the carrier from the position shown in Figs. 1 and 3 to the position shown in Figs. 2 and 4.
  • the foremost loop of the coil spring 7 is wedged in the annular gap formed between surface 5a and the carrier end portion 4 so that the carrier end portion 4 is firmly held in the bore 5 and cannot wobble during writing.
  • the invention has been described as applied in a writing implement in which a plurality of carriers is selectively operated. It will be understood that the present invention can be applied to a writing implement in which a single carrier is shifted between advanced and retracted positions.
  • a hollow casing having a front end part formed with a bore and being at least partly bounded by an annular surface;
  • a hollow casing having a front end part formed' with abore and being at least partly bounded by an annular surface;
  • At least one carrier for writing means mounted in said casing for movement between a retracted inoperative position, an advanced writing position, and a preliminary advanced position located forwardly of said advanced writing position, said carrier projecting only in said advanced I positions through said bore, said carrier defining in said said advanced positions of said carrier and being retracted from the same in said retracted position of said carrier, one of said last-mentioned portions tapering in forward direction so that said front end portion of said wedging coil spring means is wedged in said rear portion of said annular gap in said advanced positions of said carrier for holding said carrier in said bore non-movable in transverse directions while in said retracted position of said carrier,-said front end portion of said wedging coil spring means is released for longitudinal resilient action of said wedging coil spring means.
  • a hollow casing having a front end part formed with a bore and being at least partly bounded by an annular surface tapering toward the front end of said casing; at least one carrier for a writing means mounted in said casing for move--.
  • a' hollow casing having a front end part formed with a bore and being at least partly bounded by an'annular surface tapering toward the front end of said casing; at least one carrier for a writing means mounted in said casing for movement between a retracted inoperative position, an advanced writing position, and a preliminary advanced position located forwardly of said advanced writing position, said carrier projecting only in said advanced positions through said bore, said carrier in said advanced positions defining with said annular surface an annular gap tapering toward the front end of said casing; and coil spring means resilient in direction of the carrier movement and having a rear end secured to said carrier and a front end portion non-resilient in directions transverse to said direction of carrier movement, said coil spring means surrounding said carrier with said front end portion projecting into said annular tapering gap, said front end portion being wedged in said annular tapering gap in said advanced positions of said carrier for holding said carrier in said bore non movable in transverse directions while in said retracted position of said carrier, said
  • a hollow casing having a front end part formed with a bore and being at least partly bounded by an annular surface taper-' ing toward the front end of said casing; at least'one carrier for a writing mean mounted in said casing for movement between a retracted position, an advanced writing position, and a preliminary advanced position located forwardly of said advanced writing position, said carrier in said advanced positions passing through said bore and'defining with said annular surface an annular gap tapering toward the front end of said'casing; means for moving said barrier between said positions and for-arresting said carrier in said advanced writing posit-ion; and tubular wedging means resilient in direction of the carrier movement 'and'h'aving a rear end secured .to said carrier and a front end portion non-resilient in directions transverse to said direction of carrier movement surrounding said carrier and projectinginto said annular tapering gap, said front end portion being wedged in said annular tapering gap in said advanced positions of said carrier for holding said carrier in said bore
  • a hollow casing having a front end part formed with a bore and being at least partly bounded by an annular surface tapering toward the front end of said casing; at least one carrier for a writing means mounted in said casing for movement between a retracted position, an advanced writing position, and a preliminary advanced position located forwardly of said advanced writing position, said carrier in said advanced positions passing through said bore and defining with said annular surface an annular gap tapering toward the front end of said casing; means for moving said carrier between said positions and for arresting said carrier in said advanced writing position; and coil spring means resilient in direction of the carrier movement and having a rear end secured to said carrier and a front end portion non-resilient in directions transverse to said direction of carrier movement, said coil spring means surrounding said carrier with said front end portion project-.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US535086A 1954-09-21 1955-09-19 Writing implement Expired - Lifetime US2866437A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE335962X 1954-09-21

Publications (1)

Publication Number Publication Date
US2866437A true US2866437A (en) 1958-12-30

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ID=6219869

Family Applications (1)

Application Number Title Priority Date Filing Date
US535086A Expired - Lifetime US2866437A (en) 1954-09-21 1955-09-19 Writing implement

Country Status (4)

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US (1) US2866437A (de)
CH (1) CH335962A (de)
FR (1) FR1130987A (de)
GB (1) GB774856A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8905092B2 (en) 2012-04-16 2014-12-09 Jameg Sanders Gas pump key

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US70598A (en) * 1867-11-05 John f
US1729786A (en) * 1921-11-25 1929-10-01 Yoder Pencil Company Pencil
DE700311C (de) * 1937-05-13 1940-12-18 Kohler & Schaefer Wechselschreibstift mit durch Schiebetasten entgegen der Wirkung von Rueckholfedern verschiebbaren Minenhaltern
US2657670A (en) * 1950-10-19 1953-11-03 Lloyd L Colburn Pencil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US70598A (en) * 1867-11-05 John f
US1729786A (en) * 1921-11-25 1929-10-01 Yoder Pencil Company Pencil
DE700311C (de) * 1937-05-13 1940-12-18 Kohler & Schaefer Wechselschreibstift mit durch Schiebetasten entgegen der Wirkung von Rueckholfedern verschiebbaren Minenhaltern
US2657670A (en) * 1950-10-19 1953-11-03 Lloyd L Colburn Pencil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8905092B2 (en) 2012-04-16 2014-12-09 Jameg Sanders Gas pump key

Also Published As

Publication number Publication date
GB774856A (en) 1957-05-15
FR1130987A (fr) 1957-02-14
CH335962A (de) 1959-01-31

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