US3605246A - Process for making ball-point writing instruments - Google Patents

Process for making ball-point writing instruments Download PDF

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Publication number
US3605246A
US3605246A US799412A US3605246DA US3605246A US 3605246 A US3605246 A US 3605246A US 799412 A US799412 A US 799412A US 3605246D A US3605246D A US 3605246DA US 3605246 A US3605246 A US 3605246A
Authority
US
United States
Prior art keywords
ball
metal
impacts
writing
high frequency
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
US799412A
Other languages
English (en)
Inventor
Edmond Regnault
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.)
REGNAULT SA ETS
Original Assignee
REGNAULT SA ETS
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 REGNAULT SA ETS filed Critical REGNAULT SA ETS
Application granted granted Critical
Publication of US3605246A publication Critical patent/US3605246A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/76—Making other particular articles writing or drawing instruments, e.g. writing pens, erasing pens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/4984—Retaining clearance for motion between assembled parts
    • Y10T29/49845—Retaining clearance for motion between assembled parts by deforming interlock
    • Y10T29/49853—Retaining clearance for motion between assembled parts by deforming interlock of sphere, i.e., ball, in socket
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y10T29/49917—Overedge assembling of seated part by necking in cup or tube wall
    • Y10T29/49918—At cup or tube end

Definitions

  • the present invention is concerned with a new process which is particularly advantageous for making ball-carrying tips or writing tips for pencils or ball-point pens, such tips being generally called ball-points.
  • feed channel 1 There must be one or several ink feeds consisting in at least one feed channel 1. Theoretically this feed channel is centrally located.
  • An annular recess 4 allows the ball B to bathe in the ink along its entire circumference or spherical ring, the said circumference or spherical ring being located between the base seat and the lateral seat formed by the setting of lip 5 of the ball housing.
  • This recess 4 can be considered an ink chamber.
  • the pressure setting process by means of a conical matrix can only give acceptable results if the supporting point of the ball has certain particular features, that is to say that the impact or pressure only form as much as it is necessary to form and that the mass of the metal to be set can respond in such a way that the play or interstices which remains between the lip or the lateral seat and the ball be exactly that which is necessary for the passage of the ink and for the laminating to obtain good writing.
  • This process additionally is only useful if the metals used have characteristics such that their elastic limits give them a sufficient elastic return ability after they are shaped with impact.
  • the present invention proposes to remedy these drawbacks in a simple and economical manner. It has for its object a new process which makes it possible to work the metal in such a way that it is no longer necessary in order to obtain a result amenable to good handwriting, to have to make the conical ball short or long but relatively massive in order to obtain good setting.
  • the great simplicity of the setting process of the invention makes possible the use of metals having various characteristics, this process making allowable a wide range of adjustment possibilities owing to the characteristics of ductility, deformation and elastic return of these metals.
  • the operation of shrinking of the lip of the housing of the ball or of the setting of the said ball is achieved by high frequency hammering, the frequency of the impacts being variable along a wide range going from several blows/minute to ultra-sonic speeds.
  • the deformation of the metal by hammering or application of repeated high frequency impacts makes possible its progressive transformation.
  • the structure of the metal is modified progressively during the operation and enables it to thus withstand without damage such processes being either. too coma relatively considerable deformation.
  • the hammering tool which will be denominated high frequency hammer can be actuated by various energy sources: compressed air, electricity, mechanical force, the essential being to have available high frequency impacting means, preferably adjustable, in order to adapt to the behavior of the various metals which can be used, the principle being the employment of high frequency hammering of relatively weak amplitude.
  • the hammer is equipped with a suitable crimping tool comparable to a cup set forming the head of a rivet.
  • the shape of this tool will naturally differ according to the shape of the writing tip to be made and the nature of the metal used.
  • the basic shape of this flanging tool being that necessary to obtain deformation of the metal around the ball in such a way that the required conditions above described for a good crimping and set of the ball be obtained.
  • Another advantage of this process is that by giving a suitable shape to the tool, there can be obtained, by deforming the metal, and this, simultaneously with the crimping operation, an ink chamber which has a con siderable capacity, thus improving the regularity of the ink feed to the ball. It is possible to make the capacity of this ink chamber vary according to need, by an adaptation of the reception cone of the ball, screw cutting or other, and/or by the shape of the crimping tool which is actuated by the high frequency hammer.
  • the new hammering process by high frequency makes possible the progressive and correct deformation of the metal in the useful zone and in the desired shape without affecting other parts of the work piece.
  • This deformation of the metal has among other purposes to make it assume a regular shape which inscribes itself in the tool or crimping cup set in such a way that no unwanted sliding of the metal occurs.
  • Another aspect of the invention in effect is a modification of the metal.
  • Another advantage of the process is that the working station can be readily included in a continuous manufacturing unit or machine transfer unit.
  • Another possibility consists in advantageously using the high frequency hammering system for the making of the point or writing tip: formation of the seat of the ball, the feed channels, etc. It suffices to provide the apparatus with tools which are suitable for the work to be carried out.
  • the frequency of the impacts can be variable in a very large range going from several impacts/minute to sonic or ultra-sonic speeds. This depends upon the details of the problem, that is to say for example: characteristics of the metal, type of operation, production rate.
  • the number of impacts (frequency) is generally given on a time basis of a minute.
  • the tool therefore operates at a cadence of 1,800 60:108,000 impacts/minute.
  • a writing tip of the ballpoint type comprising providing a writing ball and a metal housing having a rear seat for the ball, an annular chamber for supplying ink to the ball, an ink feed channel, a plurality of secondary channels in said seat for supplying ink from said feed channel to said chamber, and a lip portion surrounding the ball
  • the improvement whichv comprises applying to said tip portion a multiplicity of impacts of relatively low amplitude and at a frequency ranging from several impacts a minute to ultrasonic frequencies to progressively shrink the lip portion of the housing around the ball and thereby set the ball in the housing by said high frequency impacts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Coating Apparatus (AREA)
US799412A 1968-04-08 1969-02-14 Process for making ball-point writing instruments Expired - Lifetime US3605246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR13022234 1968-04-08

Publications (1)

Publication Number Publication Date
US3605246A true US3605246A (en) 1971-09-20

Family

ID=9678993

Family Applications (1)

Application Number Title Priority Date Filing Date
US799412A Expired - Lifetime US3605246A (en) 1968-04-08 1969-02-14 Process for making ball-point writing instruments

Country Status (8)

Country Link
US (1) US3605246A (enrdf_load_stackoverflow)
AT (1) AT292429B (enrdf_load_stackoverflow)
DE (1) DE1905139A1 (enrdf_load_stackoverflow)
FR (1) FR1576412A (enrdf_load_stackoverflow)
GB (1) GB1266062A (enrdf_load_stackoverflow)
NL (1) NL6903188A (enrdf_load_stackoverflow)
OA (1) OA02990A (enrdf_load_stackoverflow)
SE (1) SE350441B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5309787A (en) * 1991-04-29 1994-05-10 Ina Walzlager Schaeffler Kg Locking pin for securing a shift linkage
US20050117961A1 (en) * 2002-07-01 2005-06-02 Alain Rosenzweig Ball tip for a writing instrument and method for making same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725736B1 (en) * 1992-06-26 2000-08-30 The Gillette Company Ball point pen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5309787A (en) * 1991-04-29 1994-05-10 Ina Walzlager Schaeffler Kg Locking pin for securing a shift linkage
US20050117961A1 (en) * 2002-07-01 2005-06-02 Alain Rosenzweig Ball tip for a writing instrument and method for making same
US6971814B2 (en) 2002-07-01 2005-12-06 Societe Bic Ball tip for a writing instrument and method for making same

Also Published As

Publication number Publication date
AT292429B (de) 1971-07-15
NL6903188A (enrdf_load_stackoverflow) 1969-10-10
SE350441B (enrdf_load_stackoverflow) 1972-10-30
DE1905139A1 (de) 1969-10-23
FR1576412A (enrdf_load_stackoverflow) 1969-08-01
OA02990A (fr) 1970-12-15
GB1266062A (enrdf_load_stackoverflow) 1972-03-08

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