US2505267A - Writing implement - Google Patents

Writing implement Download PDF

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Publication number
US2505267A
US2505267A US669884A US66988446A US2505267A US 2505267 A US2505267 A US 2505267A US 669884 A US669884 A US 669884A US 66988446 A US66988446 A US 66988446A US 2505267 A US2505267 A US 2505267A
Authority
US
United States
Prior art keywords
lead
tube
barrel
carrier
writing
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
US669884A
Other languages
English (en)
Inventor
Weber Alexander
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.)
Socina G M B H
SOCINA GmbH
Original Assignee
SOCINA GmbH
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 SOCINA GmbH filed Critical SOCINA GmbH
Application granted granted Critical
Publication of US2505267A publication Critical patent/US2505267A/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
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • 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 jaws 34 are provided with teeth on their insides and having outside surfaces shaped as spherical calottes.
  • the collet 33 is surrounded by a clamping sleeve 35 which, in certain limits, is axially movable relative to the jaws and which has a slight inside taper opening into a stepped enlargement 35a towards the muzzle-tube I8.
  • the jaws 34 and the clamping sleeve 35 are made of hardened steel.
  • the tapered sleeve 35 In order to press the ,jaws against lead 8 the tapered sleeve 35 is moved downwardly into engagement with the spherical surfaces of the jaws and in order to open the grip of the jaws the sleeve is moved upwardly, so that all the jaws may resiliently recede into the enlargement 35a.
  • the muzzle-tube IIJ At a small distance lila below the collet 33 the muzzle-tube IIJ is xed in the sliding tube I I and extends with its externally tapered muzzle 33 beyond the same.
  • the muzzle 33 is axially slitted and has formed internally a passageway 35a for maintaining the lead 8 therein without clearance.
  • the barrel part 3 is provided with a central bore 31 whereinto is fitted a point 38 made of very hard material, such as steel, cemented carbides, or jewel, which point may be used for marking or writing on surfaces, especially hard surfaces, wherefor the ordinary leads would not be adapted.
  • the hard point also protects the Vmuzzle against deformations due to shocks or impacts of the tip against hard surfaces.
  • the point or pin 38 is exchangeable and may be rounded at one end and pointed at the opposite end.
  • Above -each channel exit E the barrel part 3 is provided 'with a colo-r mark 39 referring to the color of the ⁇ lead 8 in said channel 6.
  • the lead carrier 'I may be rotated about its axis by rotating the sliding tube II at the aperture 4 by means of a finger tip so that it will be possible, when using the pencil, to reduce or prevent the flattening of the lead point by rotating the same about its axis.
  • the external surface of the barrel part 3 is smooth, while the surface of the sliding tube I I is knurled.
  • the tip of the forefinger is pressed partly upon the knurled surface and partly upon the smooth one. This finger tip will successively glide over the smooth surface on account of the ability of the knurled surface to rotate.
  • the gliding motion of the nger tip occurs almost unconsciously and causes aslow rotation of carrier 'I and lead 8 about their axis.
  • the lead 8 When the lead point of carrier 'I which is in writing position, is worn down the lead 8 may be fed out through the passageway 36a by touching the sliding tube II through the aperture 4 and drawing the same together with the muzzle tube I0 backward by about the length of the space Illa between tube I0 and jaws 34 against the action of the spring 32. As the lead 8 is held fast by the jaws 34 the passageway 36a of a tube I0 glides back on the lead 8. Then the upper end of tube I0 contacts the clamping sleeve 35 protruding slightly beyond the jaws 34 and pushes it upward, whereby the jaws 34 recede all at once into the enlargement 35a of the sleeve 35, thus releasing the lead 8.
  • a sudden jerk in opening the jaws 34 is useful in order to detach the jaws completely from the leadand to permit particles it may have splintered oi the lead to fall out of the teeth of the jaws.
  • spring 32 will push it forward, whereupon the passageway 36a will carry the lead along until the clamping sleeve 35 is returned by a downwardly directed shoulder 43 of the inner surface of the tube I l into yclamping position, wherein the jaws 34 are again pressed vagainst lead 8.
  • spring 32 is so designed that its pressure alone is insufcient to press the jaws 34 by means of the slightly tapered clamping sleeve 35 suiciently against the lead to resist to all writing stresses.
  • the moving force of the nger acting upon the sliding tube II overcomes the tension of resetting spring 25 and acts simultaneously in the direction of an advance of clamping sleeve 35 relative to the jaws 34, whereby the clamping 4pressure upon the jaws and accordingly upon lead 8 is increased.
  • the resetting spring 25 is so designed that when carrier 1 is advanced beyond its writing position, whereby catch ring 24 departs downward from shoulder 4I, the coils of spring 25 will soon be pressed upon one another and the lead-holding tube 9 will thereby be stopped, whereas the sliding .tube II may be furiently ⁇ v lhigl'ilto clamp f barreiaxis islimitedito ⁇ au angle'ortoo wigs. 2
  • a writing implement comprising a cylindrical barrel including a plurality of tubular passages parallel to and distributed symmetrically around the barrel axis, and, in each of said passages a tubular writing material carrier rotatable in the corresponding passage and axially ⁇ displaceable therein between a writing position in which its tip projects from the front end of the corresponding passage and a portion thereof near the tip is supported rotatably without substantial play in the lower part of the passage, and a retracted position in which its tip is withdrawn into the barrel.
  • a writing implement comprising a cylindrical barrel including a plurality of tubular passages parallel to and distributed symmetrically around the barrel axis, and, in each of said passages a tubular writing material carrier rotatable in the corresponding passage and axially displaceable therein between a writing position in which its tip projects from the front end of the corresponding passage and a portion thereof near the tip is supported rotatably without substantial play in the lower part of the passage, and a retracted position in which its tip is withdrawn into the barrel, said barrel being provided intermediate its ends with a plurality of slot shaped apertures, one for each passage, the lateral edges oi each aperture being disposed in a plane containing a chord of the corresponding tubular passage, whereby part of the outer surface of each carrier is exposed in the corresponding ⁇ aperture and can be manipulated through said aperture for axial displacement or for rotation in its passage.
  • a Writing implement as claimed in claim 2, in which the lateral edges of each aperture are disposed in a plane containing a, chord of the corresponding tubular passage extending at right angles to the radius of said barrel through the center of the corresponding passage and having a length corresponding to about 90 of the periphery of said passage.
  • a writing implement as claimed in claim 2, in which said slot shaped apertures are formed in the region of the barrel surface on which the tip of the index linger of a person using the implement would rest.
  • a writing implement comprising a cylindrical barrel including a plurality of tubular passages parallel to and distributed symmetrically around the barrel axis, in each of said passages a tubular writing material carrier rotatable in the corresponding passage and axially dis'placeable therein between a writing position in which its tip projects from the front end of the corresponding passage and a portion thereof near the tip is supported rotatably without substantial play in the lower part of the passage, and a retracted position in which its tip is withdrawn into the barrel, a resetting spring for each carrier acting between a part of thev barrel and a part of said carrier to urge the latter into its retracted position, each resetting spring being rotatable with the corresponding carrier, a catch ring on each carrier, a projection on the inner wall of each passage, means to move each carrier upon displacement thereof from its retracted to its writing position to a lock position in which said Cil projection engages said catch ring and locks the to its retracted position under the force of said resetting spring.
  • a writing implement as claimed in claim 5, in which said manually operated means includes a closing head reciprocable in the upper end of the barrel and including a cam surface for cooperation with the upper end of each carrier locked in its writing position to disengage the catch ring on said carrier from the projection to which it is locked.
  • a writing implement comprising a cylindrical barrel including a plurality of tubular passages parallel to and distributed symmetrically around the barrel axis, in each of said passages a tubular writing material carrier open at its top, a closing head for said barrel having a rotatable cover portion provided with an eccentric hole at such a distance from the axis of rotation that it can be aligned with each of said carriers, and means for closing said hole.
  • a writing implement as claimed in claim 8, in which said head includes two superposed caps rotatable relative to the barrel and, at least to some extent, relative to each other, each cap being provided with an eccentric hole arranged in such a manner that said holes can be brought in alignment with each other and with each selected one of said carriers.
  • a writing implement comprising in combination with a barrel provided with a tubular passage a lead carrier axially displaceable in said tubular passage, said lead carrier including a lead holding tube, a sliding tube reciprocable endwise on said lead holding tube, and a muzzle tube rigidly iitted in said sliding tube.
  • a writing implement comprising in combination with a barrel provided with a tubular passage a lead carrier axially displaceable in said tubular passage, said lead carrier including a lead holding tube, a sliding tube reciprocable endwise on said lead holding tube, a muzzle tube rigidly ii'tted in said sliding tube, said lead holding tube terminating towards the muzzle in lead gripping jaws which are resilient in planes including the axis of the tube, and an inwardly and downwardly tapered clamping sleeve disposed between said jaws and said sliding tubes, said clamping sleeve being axially slidable to a limited extent relative to said lead holding tube and to said sliding tube.
  • a writing implement as claimed in claim 1i in which said sliding tube is formed with an inwardly projecting shoulder for engaging said clamping sleeve, and a spring operating between said sliding tube and a projection on said lead holding tube urges said sliding tube and with it the clamping sleeve downwardly into clamping position, the lead holding tube and the sliding tube being provided with cooperating stops to prevent the clamping sleeve from being pushed entirely beyond the lead gripping jaws even if there is no lead held by the said jaws.
  • a writing implement as claimed in claim 11, in which said muzzle'tube has an externally tapered muzzle which is axially slit and has formed internally a passageway for guiding a lead therethrough without play.
  • a writing implement comprising ajcylindrical barrel including a plurality of tubular pas'- sages parallel to and distributed symmetrically around the barrel axis in each of said' ⁇ passages a. tubular writing material carrier rotatable in the corresponding passage and axially displaceable therein between a writing position in which its tip projects from the front end of the corresponding passage and a portion thereof near the tip is supported rotatably without substantial play in the lower part of the passage, and a retracted portion in which its tip is withdrawn into the barrel, said barrel having a pointed lower end provided between the exit openings of said passages with a tip of a material the hardness of which exceeds that of the barrel material to protect said openings and to Serve as a marking point.
  • a writing implement as claimed in claim i7, in which said hard tip at the front end of the barrel is formed by a pin which is exchangeably mounted in said barrel.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US669884A 1945-09-01 1946-05-15 Writing implement Expired - Lifetime US2505267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH629089X 1945-09-01

Publications (1)

Publication Number Publication Date
US2505267A true US2505267A (en) 1950-04-25

Family

ID=4524609

Family Applications (1)

Application Number Title Priority Date Filing Date
US669884A Expired - Lifetime US2505267A (en) 1945-09-01 1946-05-15 Writing implement

Country Status (6)

Country Link
US (1) US2505267A (de)
BE (1) BE467683A (de)
CH (1) CH260597A (de)
DE (1) DE876224C (de)
GB (1) GB629089A (de)
NL (1) NL66917C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708902A (en) * 1952-05-24 1955-05-24 Adolph L Osrow Marking device
US2865331A (en) * 1953-08-17 1958-12-23 Paper Mate Of Puerto Rico Inc Cam type retractable mechanisms
US2865333A (en) * 1954-10-20 1958-12-23 Paper Mate Of Puerto Rico Inc Writing implements
US2868170A (en) * 1953-10-14 1959-01-13 Paper Mate Mfg Co Retractable mechanism of pinch yoke type
US3077184A (en) * 1959-10-12 1963-02-12 Lindy Pen Co Inc Double-ended ball point pen
US4148591A (en) * 1977-08-12 1979-04-10 Pilot Man-Nen-Hitsu Kabushiki Kaisha Writing unit locking mechanism in a multiple-point writing implement including a mechanical pencil unit
CN110497448A (zh) * 2019-09-23 2019-11-26 浙江瑞瀚科技有限公司 一种圆环刀头及具有圆环刀头的剃毛器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL99401C (de) * 1956-11-30
DE1211512B (de) * 1957-07-03 1966-02-24 Faber Castell A W Kugelschreiber mit einer im Bereich der Kugelfassung gegenueber seiner Schaftlaengsachse abgewinkelt ausgerichteten Schreibmine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US940247A (en) * 1908-08-17 1909-11-16 Edward Todd & Co Polypoint pencil.
US1528687A (en) * 1923-03-03 1925-03-03 Nyman John Arthur Pencil
US2067455A (en) * 1935-09-12 1937-01-12 Maucher Hans Pencil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US940247A (en) * 1908-08-17 1909-11-16 Edward Todd & Co Polypoint pencil.
US1528687A (en) * 1923-03-03 1925-03-03 Nyman John Arthur Pencil
US2067455A (en) * 1935-09-12 1937-01-12 Maucher Hans Pencil

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708902A (en) * 1952-05-24 1955-05-24 Adolph L Osrow Marking device
US2865331A (en) * 1953-08-17 1958-12-23 Paper Mate Of Puerto Rico Inc Cam type retractable mechanisms
US2868170A (en) * 1953-10-14 1959-01-13 Paper Mate Mfg Co Retractable mechanism of pinch yoke type
US2865333A (en) * 1954-10-20 1958-12-23 Paper Mate Of Puerto Rico Inc Writing implements
US3077184A (en) * 1959-10-12 1963-02-12 Lindy Pen Co Inc Double-ended ball point pen
US4148591A (en) * 1977-08-12 1979-04-10 Pilot Man-Nen-Hitsu Kabushiki Kaisha Writing unit locking mechanism in a multiple-point writing implement including a mechanical pencil unit
CN110497448A (zh) * 2019-09-23 2019-11-26 浙江瑞瀚科技有限公司 一种圆环刀头及具有圆环刀头的剃毛器

Also Published As

Publication number Publication date
BE467683A (de)
GB629089A (en) 1949-09-12
NL66917C (de)
DE876224C (de) 1953-05-11
CH260597A (de) 1949-03-31

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