EP0465739A1 - Instrument pour couper des feuilles de papier - Google Patents

Instrument pour couper des feuilles de papier Download PDF

Info

Publication number
EP0465739A1
EP0465739A1 EP90307535A EP90307535A EP0465739A1 EP 0465739 A1 EP0465739 A1 EP 0465739A1 EP 90307535 A EP90307535 A EP 90307535A EP 90307535 A EP90307535 A EP 90307535A EP 0465739 A1 EP0465739 A1 EP 0465739A1
Authority
EP
European Patent Office
Prior art keywords
paper
liquid
end portion
barrel
wetting
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.)
Granted
Application number
EP90307535A
Other languages
German (de)
English (en)
Other versions
EP0465739B1 (fr
Inventor
Hisao Kai
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Priority to EP90307535A priority Critical patent/EP0465739B1/fr
Priority to DE69014106T priority patent/DE69014106T2/de
Priority to CA002021008A priority patent/CA2021008C/fr
Publication of EP0465739A1 publication Critical patent/EP0465739A1/fr
Application granted granted Critical
Publication of EP0465739B1 publication Critical patent/EP0465739B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B27/00—Hand cutting tools not provided for in the preceding groups, e.g. finger rings for cutting string, devices for cutting by means of wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00—Combinations of writing implements with other articles
    • B43K29/18—Combinations of writing implements with other articles with hand tools, e.g. erasing knives

Definitions

  • the present invention relates to a paper leaf cutting instrument which is used for making weakened a desired linear portion on a leaf of paper so that the leaf of paper may be cut along the linear fragile portion when necessary.
  • the present inventor has studied a cutting pen which may be used like an ordinary writing pen relative to a leaf of paper and, simultaneously, may be used for cutting the paper leaf along the writing locus by tensioning or pressing the paper leaf.
  • an object of the invention is to provide a paper leaf cutting instrument which is capable of scratching a leaf of paper under a somewhat large writing pressure to supply moisture to such an extent that the paper may be made fragile, immediately thereafter, scratching the wet portion, and then cutting the paper, when necessary, simply by tensioning the paper without adversely affecting the outer appearance of the paper.
  • the instrument may be normally used as a writing instrument.
  • a paper leaf cutting instrument which includes a barrel portion accommodating a liquid supply portion for supplying a liquid for wetting the paper surface, a wetting end portion mounted on a tip end of the barrel portion and being supplied with the liquid from the liquid supplying portion, the wetting end portion having wettability and compressibility, a paper leaf expanding/opening portion having an expanding/opening blade provided in contact with a side surface of the wetting end portion, and the expanding/opening blade extending substantially the same length as the wetting end portion in an axial direction of the barrel portion.
  • the "wetting end portion” refers to a tip end portion of a water-absorbent property and compressible material, the tip end portion being exposed from the barrel portion.
  • the other end of the wetting end portion comes into contact with the liquid accommodated in the barrel portion and is always wetted to form a wetting end portion.
  • the liquid of the barrel portion is always supplied to the wetting end portion. It is preferable to use writing liquid, such as ink, as the liquid for wetting the paper because the instrument may be also used as a writing instrument.
  • the assembly of fiber may supply a sufficient amount of moisture due to the capillary phenomenon of the fiber forming the material, even if the assembly is concentrated at high density.
  • the assembly of fiber is durable in service life.
  • the end of the wetting end portion is so shaped that it is cut on a slant at from about 30 to 80 degrees, preferably at about 40 to 80 degrees, in order to carry out writing even when the instrument is slightly slanted in the same manner as the writing instrument for supplying the writing liquid.
  • the periphery of the wetting end portion is surrounded in a ring shape by the paper leaf expanding/opening portion having the paper leaf expanding/opening blade projecting like a needle.
  • a ring of hard material from which the expanding/opening blade is formed surrounds the wetting end portion. It is possible to insert the wetting end portion made of water-absorptive and compressibile material into the ring. However, it is preferable to use a plate member made of metal or the like and bent into a ring, as shown in Fig. 5. In this case, it is easy to perform molding, and in addition, it is possible to provide a ring shape having one discontinuous portion to impart a flexibility to the expanding/opening blade and the wetting end portion. Furthermore, it is easy to insert the water-absorbing material into the ring. Even after the insertion, the wetting end portion may be positively gripped due to its flexibility.
  • the expanding/opening blade is formed so as to project from the ring.
  • the end of the blade is sharpened like a needle and is finished to have a flat smooth surface so as to slide well on the paper surface.
  • a sharp inverted V-shaped top as a tip end of the expanding/opening blade.
  • the corner portion (indicated by reference numeral 7 in Fig. 4) actually works as a weakened linear machined portion.
  • the ring and expanding/opening blade of the paper leaf expanding/opening portion and made of material, which is hard and dense, such as stainless, brass, other non-corroding metal, ceramics and the like.
  • the expanding/opening blade requires a strength of 150 to 200 g, which is larger than that of an average absolute writing pressure of 60 g, which is applied to a conventional writing instrument.
  • the ring of the proximal portion of the paper leaf expanding/opening portion be inserted into the barrel portion. By inserting the proximal portion of the ring into the barrel portion in this manner, the wetting end portion and the paper leaf expanding/opening portion are fixed together without fail.
  • wetting end portion extends substantially in the same length as the end of the expanding/opening blade in an axial direction of the barrel portion, as shown in Fig. 2.
  • the paper leaf cutting instrument When the instrument is used for cutting the paper leaf, in order to make the paper fragile in a linear manner, the paper leaf cutting instrument should be held in an upright condition as much as possible and the writing should be performed while imparting downwards the somewhat stronger pressure to the writing instrument, in conformity with a desired line. In this case, the pressure causes the water-absorbent and compressible material to be compressed to provide a large amount of liquid. As a result, the paper is sufficiently wet to be fragile. Keeping on the writing operation, as shown in Fig. 3, the wetting end portion is compressed to be substantially shorter than the expanding/opening blade, and the inverted V-shaped expanding/opening blade pushes and opens the paper fibers of the paper made fragile by the moisture provided from the end portion, thus cutting a part of the fiber.
  • the fiber in a dry condition of the paper, the fiber remains open by the expanding/opening blade. A portion of the paper which is partially cut becomes extremely fragile but its outer appearance would be kept almost unchanged.
  • the traversed portion of the paper is colored. Therefore, if the colored portion is tensioned, the paper leaf may be cut along the locus of the fragile portion.
  • a flow rate of the writing liquid from the wetting end portion is in the range of 0.3 g/m to 1.6 g/m.
  • a wetting liquid may be filled directly into a cavity of the barrel portion, or otherwise may be absorbed into the water-absorbing material, such as a sponge, inserted into the barrel.
  • the proximal portion of the wetting end portion which communicates with the liquid supply portion containing a liquid to wet the paper surface and is accommodated or held in the barrel portion is surrounded by the ring-like hard element, and the expanding/opening blade projects from the ring-like hard element.
  • the tip end of the wetting end portion is compressed to thereby supply a large amount of liquid for wetting the paper surface.
  • the corner portion of the expanding/opening blade whose end is sharpened in the form of an inverted V-shape as shown in Fig.
  • the ring made of hard material only surrounds the proximal end portion of the wetting end portion. Thus, the ability of the wetting end portion to supply water is not obstructed.
  • Fig. 1 is a side view of an embodiment of a cutting instrument in accordance with the invention, in which reference numeral 1 denotes a barrel portion of the cutting instrument, and reference numeral 2 denotes a wetting end portion which has a diameter of about 3 mm and which is made, e.g., of polyester fiber, its top end is cut at about 70 degrees.
  • Reference numeral 3 denotes a paper leaf expanding/opening portion which surrounds the wetting end portion 2 at a proximal end portion thereof. The wetting end portion 2 is inserted into a distal end of the barrel portion 1 and is fixed therein while being surrounded at the proximal portion 4.
  • the wetting end portion 2 optionally extends into the barrel portion and serves as a wick in controlling fluid flow from the barrel to a paper surface.
  • An expanding/opening blade 5 is provided in intimate contact with an outer longest portion of the wetting end portion 2, which is obliquely cut at its distal end.
  • the proximal portion 4 may be in the form of a ring which is slightly opened and discontinuous at one end as shown in Fig. 4, or otherwise may be in the form of a closed ring 4B, as shown in Fig. 6 (in accordance with another embodiment of the invention).
  • the distal end of the wetting end portion 2 is substantially projected to the same length as the expanding/opening blade 5.
  • the tip end of the expanding/opening blade 5 projects in the form of an inverted V-shape in a cross section thereof as shown in Fig. 4.
  • Reference numeral 6 denotes a projecting portion.
  • a corner portion of the projecting portion 6 serves as a cutting portion 7 which expands or opens and partially cuts fiber of the wetted portion of the paper and which actually works to make the paper fragile.
  • the wetting end portion 2 is surrounded in a ring by the paper leaf expanding/opening portion 3. Also, it is possible to manufacture the instrument by inserting the wetting end portion 2 into the paper leaf expanding/opening portion 3B made in a ring shape in advance as shown in Fig. 6.
  • the internal structure of the barrel portion is the same as that of a conventional writing instrument so that colored writing liquid is supplied to the wetting end portion 2.
  • a supply rate of the writing liquid is, e.g., at 1 g/100 m when the writing operation is alway performed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Pens And Brushes (AREA)
EP90307535A 1990-07-10 1990-07-10 Instrument pour couper des feuilles de papier Expired - Lifetime EP0465739B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP90307535A EP0465739B1 (fr) 1990-07-10 1990-07-10 Instrument pour couper des feuilles de papier
DE69014106T DE69014106T2 (de) 1990-07-10 1990-07-10 Schneidewerkzeug für Papierblätter.
CA002021008A CA2021008C (fr) 1990-07-10 1990-07-12 Coupe-papier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP90307535A EP0465739B1 (fr) 1990-07-10 1990-07-10 Instrument pour couper des feuilles de papier
CA002021008A CA2021008C (fr) 1990-07-10 1990-07-12 Coupe-papier

Publications (2)

Publication Number Publication Date
EP0465739A1 true EP0465739A1 (fr) 1992-01-15
EP0465739B1 EP0465739B1 (fr) 1994-11-09

Family

ID=25674200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90307535A Expired - Lifetime EP0465739B1 (fr) 1990-07-10 1990-07-10 Instrument pour couper des feuilles de papier

Country Status (3)

Country Link
EP (1) EP0465739B1 (fr)
CA (1) CA2021008C (fr)
DE (1) DE69014106T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017027637A1 (fr) * 2015-08-10 2017-02-16 Perry Teri Toys, Llc Système pour l'application et la découpe de matériau

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191215580A (en) * 1911-07-05 1912-09-05 Stanislaus Ritter Von Bylicki Improvements in or relating to Pencil Holders.
US1519816A (en) * 1923-02-05 1924-12-16 Leonard S Ward Letter opener
JPS62104900U (fr) * 1985-12-23 1987-07-04

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191215580A (en) * 1911-07-05 1912-09-05 Stanislaus Ritter Von Bylicki Improvements in or relating to Pencil Holders.
US1519816A (en) * 1923-02-05 1924-12-16 Leonard S Ward Letter opener
JPS62104900U (fr) * 1985-12-23 1987-07-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017027637A1 (fr) * 2015-08-10 2017-02-16 Perry Teri Toys, Llc Système pour l'application et la découpe de matériau

Also Published As

Publication number Publication date
CA2021008C (fr) 1996-11-19
DE69014106T2 (de) 1995-03-23
EP0465739B1 (fr) 1994-11-09
CA2021008A1 (fr) 1992-01-13
DE69014106D1 (de) 1994-12-15

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