US3277562A - Method for manufacturing clock dials - Google Patents

Method for manufacturing clock dials Download PDF

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Publication number
US3277562A
US3277562A US431282A US43128265A US3277562A US 3277562 A US3277562 A US 3277562A US 431282 A US431282 A US 431282A US 43128265 A US43128265 A US 43128265A US 3277562 A US3277562 A US 3277562A
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Prior art keywords
plate
signs
dial
self
face
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US431282A
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Huguenin Pierre
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Huguenin and Cie
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Huguenin and Cie
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
    • G04B19/103—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial attached or inlaid numbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2715/00—Condition, form or state of preformed parts, e.g. inserts
    • B29K2715/006—Glues or adhesives, e.g. hot melts or thermofusible adhesives
    • 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
    • Y10T29/49579—Watch or clock making
    • Y10T29/49583—Watch or clock making having indicia, face, or dial
    • 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
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49993—Filling of opening

Definitions

  • the present invention relates to a method for manufacturing clock dials.
  • Clock dials are frequently furnished with slightly protruding hour-signs or ornamental patterns. Such signs are often added to the dial plate and fixed to the latter by means of rivets. According to certain methods, these signs can be electro-deposited on, or welded to, the plate and they are finished by mechanical faceting or polishing.
  • a shell is prepared by electroplating and it serves to cover the plate and the signs. That shell is fixed to the plate by means of a resin.
  • the signs are stuck on to the plate.
  • the reverse side of the signs must be coated with glue before these signs are laid on the plate.
  • the present invention relates to a method for manufacturing a clock dial with slightly protruding signs, said method consisting in injecting from the reverse side of the dial plate and through openings made in the latter, a molten material which fills prints of the hour-signs provided in a mould laid on the plate face.
  • Said method is characterised in that the plate face is coated, before the sign prints are injected, with a self-adhesive film adapted to fix said signs once said material has solidified.
  • FIG. 1 is the plan view of the reverse side of a dial plate
  • FIG. 2 is a cross section of FIG. 1 along II-II,
  • FIG. 3 shows how the sign prints are injected and FIGS. 4 and 5 show two signs obtained by the method according to the invention.
  • a dial face 1 is coated with a film of a self-adhesive plastic material In. That plate comprises feet 2 and, for each of the signs which are to appear on the dial face, an opening '3. A circular groove 4 which connects these openings is itself connected to the plate edge by a rectiilnear groove 5.
  • a mould 6 (FIG. 3), of plastic material for instance, is provided with recesses which are the female counterparts of the hour-signs to be molded and which will protrude from the dial.
  • the dial plate 1 is anchored to a base 8 'by its feet 2. Circular and rectilinear grooves, 9 and 10 respectively, are provided on the upper face of that block. They perfectly match the grooves made in the reverse side of the plate. Once superposed, they form an inlet channel for introducing the liquid molding material, said channel having a cross-section large enough to permit the exhaust of air and prevent choking due to a too-quick cooling of the molten molding material.
  • the material injected which has a low melting point, can be a plastic material or an alloy of the lead-tin-antimony type, melting between 55 and C. (between and 212 F.). Once the signs have cooled, the material injected perfectly sticks to the self-adhesive layer which has been previously laid on the dial plate.
  • the inlet channel in the case of thin plates, can be simply constituted by a groove in the base.
  • Such a method for manufacturing clock-dials with slight- 1y protruding signs has the advantage of providing signs having -a metallic aspect, and it requires just one operating step for simultaneously manufacturing and fixing all the signs on the base plate.
  • a method for manufacturing clock dials having a plate with slightly protruding signs comprising piercing said plate at locations corresponding to that of the signs to be made, coating the face of the plate of said dial with a self-adhesive film, placing a mold on said plate face, said mold comprising recesses which are the female counterparts of the signs to be made, injecting a molten molding material from the reverse side of said plate into said openings and, therefrom, into said recesses, whereby the mass of said molding material once solidified is fixed to said plate, owing to said self-adhesive film.
  • a method for manufacturing a clock-dial having a plate with slightly protruding signs comprising piercing said plate at locations corresponding to that of the signs to be made, coating the face of the plate of said dial with a film of self-adhesive plastic material, placing a mold on said face of the plate, said mold comprising recesses which are the female counterparts of the signs to be made, injecting a molten molding material from the reverse side of said plate into said openings and, therefrom, into said recesses, whereby the mass of saidmolding material once solidified is fixed to said plate, owing to said film of selfadhesive plastic material.
  • a method for manufacturing a clock-dial having a plate with slightly protruding signs comprising piercing said plate at locations corresponding to that of the signs to be made, coating the face of the plate of said dial with a film of a first self-adhesive plastic material, placing a mold on said face of the plate, said mold comprising recesses which are the female counterparts of the signs to be made, injecting a molten plastic material from the reverse side of said plate into said openings and, therefrom, into said recesses, whereby the mass of said molten plastic material once solidified is fixed to said plate owing to said film of a first self-adhesive plastic material.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

1956' P. HUGUENIN 3,277, 562
METHOD FOR MANUFACTURING CLOCK DIALS Fild Feb. 9, 1965 United States Patent METHOD FOR MANUFACTURING CLOCK DIALS Pierre Huguenin, Evilard, Switzerland, assignor to Huguenin & Cie, Bienne, Switzerland, a firm Filed Feb. 9, 1965, Ser. No. 431,282
Claims priority, application Switzerland, Feb. 11, 1964,
1,603/ 64 3 Claims. (Cl. 29-177) The present invention relates to a method for manufacturing clock dials.
Clock dials are frequently furnished with slightly protruding hour-signs or ornamental patterns. Such signs are often added to the dial plate and fixed to the latter by means of rivets. According to certain methods, these signs can be electro-deposited on, or welded to, the plate and they are finished by mechanical faceting or polishing.
According to other methods, a shell is prepared by electroplating and it serves to cover the plate and the signs. That shell is fixed to the plate by means of a resin.
It has been suggested to inject signs through openings in the dial plate, and colour them by electro-deposition. These openings, of a suitable shape, allow to anchor the signs on to the plate.
Finally, according to still another method, more especially adapted to large size dials, the signs are stuck on to the plate. The reverse side of the signs must be coated with glue before these signs are laid on the plate. In view of the difliculties encountered, as well as regards an even distribution of the glue as the centering of the signs on the plate, that method cannot be profitably carried out.
The present invention relates to a method for manufacturing a clock dial with slightly protruding signs, said method consisting in injecting from the reverse side of the dial plate and through openings made in the latter, a molten material which fills prints of the hour-signs provided in a mould laid on the plate face. Said method is characterised in that the plate face is coated, before the sign prints are injected, with a self-adhesive film adapted to fix said signs once said material has solidified.
The features of the present invention will be disclosed hereafter, reference being bad to the accompanying drawing in which FIG. 1 is the plan view of the reverse side of a dial plate,
FIG. 2 is a cross section of FIG. 1 along II-II,
FIG. 3 shows how the sign prints are injected and FIGS. 4 and 5 show two signs obtained by the method according to the invention.
The operating steps are as follows:
A dial face 1 is coated with a film of a self-adhesive plastic material In. That plate comprises feet 2 and, for each of the signs which are to appear on the dial face, an opening '3. A circular groove 4 which connects these openings is itself connected to the plate edge by a rectiilnear groove 5. A mould 6 (FIG. 3), of plastic material for instance, is provided with recesses which are the female counterparts of the hour-signs to be molded and which will protrude from the dial. The dial plate 1 is anchored to a base 8 'by its feet 2. Circular and rectilinear grooves, 9 and 10 respectively, are provided on the upper face of that block. They perfectly match the grooves made in the reverse side of the plate. Once superposed, they form an inlet channel for introducing the liquid molding material, said channel having a cross-section large enough to permit the exhaust of air and prevent choking due to a too-quick cooling of the molten molding material.
3,277,562 Patented Oct. 11, 1966 "ice The mold 6, the prints of which may have been previously metallized is laid on the plate; then the liquid molding material is injected.
The material injected, which has a low melting point, can be a plastic material or an alloy of the lead-tin-antimony type, melting between 55 and C. (between and 212 F.). Once the signs have cooled, the material injected perfectly sticks to the self-adhesive layer which has been previously laid on the dial plate.
By using, for injecting the sign prints, 21 plastic material of the same kind as that forming the self-adhesive film, a welding is achieved which increases the adhesiveness resulting from the self-adhesive character of the film.
According to still another form of embodiment, in the case of thin plates, the inlet channel can be simply constituted by a groove in the base.
Such a method for manufacturing clock-dials with slight- 1y protruding signs has the advantage of providing signs having -a metallic aspect, and it requires just one operating step for simultaneously manufacturing and fixing all the signs on the base plate.
What I claim is:
1. A method for manufacturing clock dials having a plate with slightly protruding signs, comprising piercing said plate at locations corresponding to that of the signs to be made, coating the face of the plate of said dial with a self-adhesive film, placing a mold on said plate face, said mold comprising recesses which are the female counterparts of the signs to be made, injecting a molten molding material from the reverse side of said plate into said openings and, therefrom, into said recesses, whereby the mass of said molding material once solidified is fixed to said plate, owing to said self-adhesive film.
7,. A method for manufacturing a clock-dial having a plate with slightly protruding signs, comprising piercing said plate at locations corresponding to that of the signs to be made, coating the face of the plate of said dial with a film of self-adhesive plastic material, placing a mold on said face of the plate, said mold comprising recesses which are the female counterparts of the signs to be made, injecting a molten molding material from the reverse side of said plate into said openings and, therefrom, into said recesses, whereby the mass of saidmolding material once solidified is fixed to said plate, owing to said film of selfadhesive plastic material.
3. A method for manufacturing a clock-dial having a plate with slightly protruding signs, comprising piercing said plate at locations corresponding to that of the signs to be made, coating the face of the plate of said dial with a film of a first self-adhesive plastic material, placing a mold on said face of the plate, said mold comprising recesses which are the female counterparts of the signs to be made, injecting a molten plastic material from the reverse side of said plate into said openings and, therefrom, into said recesses, whereby the mass of said molten plastic material once solidified is fixed to said plate owing to said film of a first self-adhesive plastic material.
References Cited by the Examiner UNITED STATES PATENTS 444,894 6/1891 Jacobson 29--177 X 762,082 6/ 1904 Nichols 29-177 2,732,613 1/1956 Renholts 264274 X 3,132,412 5/1964 Kreissig 264 274 X JOHN F. CAMPBELL, Primary Examiner.
THOMAS H. EAGER, Examiner.

Claims (1)

1. A METHOD FOR MANUFACTURING CLOCK DIALS HAVING A PLATE WITH SLIGHTLY PROTRUDING SIGNS, COMPRISING PIERCING SAID PLATE AT LOCATIONS CORRESPONDING TO THAT OF THE SIGNS TO BE MADE, COATING THE FACE OF THE PLATE OF SAID DIAL WITH A SELF-ADHESIVE FILM, PLACING A MOLD ON SAID PLATE FACE, SAID MOLD COMPRISING RECESSES WHICH ARE THE FEMALE COUNTERPARTS OF THE SIGNS TO BE MADE, INJECTING A MOLTEN MOLDNG MATERIAL FROM THE REVERSE SIDE OF SAID PLATE INTO SAID OPEINGS, AND, THEREFROM, INTO SAID RECESSES, WHEREBY THE MASS OF SAID MOLDING MATERIAL ONCE SOLIDIFIED IS FIXED TO SAID PLATE, OWING TO SAID SELF-ADHESIVE FILM.
US431282A 1964-02-11 1965-02-09 Method for manufacturing clock dials Expired - Lifetime US3277562A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433013A (en) * 1966-04-04 1969-03-18 Jean Singer & Cie Sa Timepiece dial
US3545073A (en) * 1968-02-16 1970-12-08 Itt Method of manufacturing a telephone dial governor weight
US3646653A (en) * 1968-04-26 1972-03-07 Jap Sa Method and tool for making a watch dial with raised symbols
US3712079A (en) * 1970-11-09 1973-01-23 O Eberle Ring of two precious metal parts, one overlapping and embedding the other along the ring band portion
US4213536A (en) * 1977-09-28 1980-07-22 Hafner & Krullmann Gmbh Container for convoluted wire or the like
US5215700A (en) * 1990-04-30 1993-06-01 Garganese Richard S Method of molding a display card
US5513153A (en) * 1995-02-13 1996-04-30 Timex Corporation Method of manufacturing three-dimensional indicia on electroluminescent timepiece dials and timepiece dials produced thereby
US20050160574A1 (en) * 2004-01-26 2005-07-28 Nivarox-Far S.A. Method for manufacturing hour-symbols and installation for implementing the same
US9298165B2 (en) * 2014-06-30 2016-03-29 Casio Computer Co., Ltd. Typesetting fixing method, display plate and timepiece

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3016331B2 (en) * 1993-09-07 2000-03-06 富士通株式会社 Manufacturing method of electronic equipment housing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US444894A (en) * 1891-01-20 Method of making watch-dials
US762082A (en) * 1903-02-02 1904-06-07 Charles B Nichols Method of dial-sinking.
US2732613A (en) * 1956-01-31 renholts
US3132412A (en) * 1964-05-12 Process for manufacturing a lever assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US444894A (en) * 1891-01-20 Method of making watch-dials
US2732613A (en) * 1956-01-31 renholts
US3132412A (en) * 1964-05-12 Process for manufacturing a lever assembly
US762082A (en) * 1903-02-02 1904-06-07 Charles B Nichols Method of dial-sinking.

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433013A (en) * 1966-04-04 1969-03-18 Jean Singer & Cie Sa Timepiece dial
US3545073A (en) * 1968-02-16 1970-12-08 Itt Method of manufacturing a telephone dial governor weight
US3646653A (en) * 1968-04-26 1972-03-07 Jap Sa Method and tool for making a watch dial with raised symbols
US3712079A (en) * 1970-11-09 1973-01-23 O Eberle Ring of two precious metal parts, one overlapping and embedding the other along the ring band portion
US4213536A (en) * 1977-09-28 1980-07-22 Hafner & Krullmann Gmbh Container for convoluted wire or the like
US5215700A (en) * 1990-04-30 1993-06-01 Garganese Richard S Method of molding a display card
US5513153A (en) * 1995-02-13 1996-04-30 Timex Corporation Method of manufacturing three-dimensional indicia on electroluminescent timepiece dials and timepiece dials produced thereby
US20050160574A1 (en) * 2004-01-26 2005-07-28 Nivarox-Far S.A. Method for manufacturing hour-symbols and installation for implementing the same
US7337542B2 (en) * 2004-01-26 2008-03-04 Nivarox-Far S.A. Method for manufacturing hour-symbols and installation for implementing the same
US9298165B2 (en) * 2014-06-30 2016-03-29 Casio Computer Co., Ltd. Typesetting fixing method, display plate and timepiece

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FR1424199A (en) 1966-01-07

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