GB2040776A - A method of manufacturing a dial with punched inlay indexes - Google Patents

A method of manufacturing a dial with punched inlay indexes Download PDF

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Publication number
GB2040776A
GB2040776A GB7940988A GB7940988A GB2040776A GB 2040776 A GB2040776 A GB 2040776A GB 7940988 A GB7940988 A GB 7940988A GB 7940988 A GB7940988 A GB 7940988A GB 2040776 A GB2040776 A GB 2040776A
Authority
GB
United Kingdom
Prior art keywords
dial
indexes
plate
dial plate
punched
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
GB7940988A
Other versions
GB2040776B (en
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.)
Fluckiger & Fils SA
Original Assignee
Fluckiger & Fils SA
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
Priority to CH108679A priority Critical patent/CH624532A/it
Application filed by Fluckiger & Fils SA filed Critical Fluckiger & Fils SA
Publication of GB2040776A publication Critical patent/GB2040776A/en
Application granted granted Critical
Publication of GB2040776B publication Critical patent/GB2040776B/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04DAPPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0048Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for dials
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/06Dials
    • G04B19/10Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
    • G04B19/103Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial attached or inlaid numbers

Abstract

A method of manufacturing a dial with punched inlay indexes. The dial plate (4) is placed on the matrix (2) of a stamp (1). A plate (6) of a thickness greater than the thickness of the dial plate (4) is placed on the dial plate (4). A section (8) in the shape of an index is cut with a single stroke from the plate (6) and the dial plate (4), with at least one punch (7) of the stamp (1), in such a way that the section (8) cut from the plate (6) is punched into the dial plate (4) so as to form a punched inlay index. <IMAGE>

Description

SPECIFICATION A method of manufacturing a dial with punched inlay indexes Technical Field of the Invention The present invention relates to a method of manufacturing a dial with punched inlay indexes.

Background art The manufacture of dials with punched inlay indexes has been known for a long time. Most of the methods of manufacturing this type of dial have the drawback that the indexes are fixed onto the dial plate either before or after finishing and faceting, by means of small lugs and/or glue, which is a costly and delicate operation.

Disclosure ofthe Invention An object of the present invention is to minimise the cost involved in applying the indexes onto the dial plate, without, however, impairing the aesthetic appearance and quality of the dials.

According to the invention there is provided a method of manufacturing a dial with punched inlay indexes comprising placing a dial plate on a matrix of a stamp, placing a plate of a thickness greater than the thickness of the dial plate on the dial plate, and punching a section in the shape of an index, with a single stroke, from the plate and the dial plate with at least one punch of the stamp, in such a way that the section cut from the plate is punched into the dial plate so as to form a punched inlay index.

In an advantageous variant of the invention, the method is characterised in that several indexes are cut with a single stroke with several punches.

In another variant, the dial plate is positioned on the matrix of the stamp by means of two positioning holes.

It is also possible to apply this method to a dial plate which is already equipped with lugs.

In another variant, the dial plate is then cut to its final external dimensions.

It is also possible to subject the dial plate with the inlaid indexes to diamonding or faceting of the indexes before or afterthe dial plate has been cut to its final dimensons.

Brief description of the drawings An embodiment of the invention will now be described by way of example with reference to the accompanying drawings, wherein: Figure 1 shows a partial section of a stamp with matrix and punches, together with a dial plate positioned on the matrix; Figure 2 shows the stamp of Figure 1 after operation of the punches; and Figure 3 shows a dial with its indexes after leaving the stamp.

Best mode of carrying out the invention Figure 1 shows a stamp 1 made up of a matrix 2 and punches 7. A dial 4 with two lugs 5 is positioned on the matrix 2 with the aid of two positioning holes 3. A plate 6 of a thickness greater than the thickness of the dial plate 4, and made of brass, is placed in position, on top of the dial 4, by means of the lugs 5.

Figure 2 shows the stamp 1 after operation of the punches 7 which have cut, with a single stroke, sections 8 from the plate 6 and the dial plate 4. The sections 8 are punched through the dial plate 4 in such a way as to protrude beyond the latter in the form of inlaid indexes.

Figure 3 shows the dial 4 after it has been removed from the stamp 1, and after operation of the punches 7 as described in connection with Figure 2. The dial thus manufactured is subjected to a final cutting operation in order to give it its final external dimensions no longer including the positioning holes 3.

The method as described above can also be applied to dials without lugs 5. Such dials, for this reason, are not required to be positioned on the matrix 2 by means of positioning holes.

A person skilled in the art will readily recognize that it is advantageous to choose the thickness of the plate 6 so that it correspondsto the thickness of the dial plate 4 plus the height of the indexes, so that the sections 8 forming the indexes can be punched flush in the dial plate 4.

The dial manufactured in this way may then by subjected to diamonding or faceting of the final indexes.

The method according to the invention is simple and inexpensive and makes it possible to obtain dials which are identical in appearance to dials with punched inlay indexes manufactured by conventional methods and which, at the same time, are less expensive.

1. A method of manufacturing a dial with punched inlay indexes comprising placing a dial plate (4) on a matrix (2) of a stamp (1), placing a plate (6) of a thickness greater than the thickness of the dial plate (4) on the dial plate (4), and punching a section (8) in the shape of an index, with a single stroke, from the plate (6) and the dial plate (4) with at least one punch (7) of the stamp (1), in such a way that the section (8) cut from the plate (6) is punched into the dial plate (4) so as to form a punched inlay index.

2. A method according to Claim 1, wherein several sections (8) forming several indexes are cut with a single stroke with several punches (7).

3. A method according to Claim 1 or 2, wherein the dial plate (4) is positioned on the matrix (2) by means of two positioning holes (3).

4. A method according to any preceding claim, wherein the dial plate (4) is then cut to its final desired external dimensions.

5. A method according to Claim 4, wherein the dial thus obtained is subjected to diamonding or faceting of the indexes.

6. A method of manufacturing a dial with punched inlay indexes substantially as hereinbefore described by way of example with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A method of manufacturing a dial with punched inlay indexes Technical Field of the Invention The present invention relates to a method of manufacturing a dial with punched inlay indexes. Background art The manufacture of dials with punched inlay indexes has been known for a long time. Most of the methods of manufacturing this type of dial have the drawback that the indexes are fixed onto the dial plate either before or after finishing and faceting, by means of small lugs and/or glue, which is a costly and delicate operation. Disclosure ofthe Invention An object of the present invention is to minimise the cost involved in applying the indexes onto the dial plate, without, however, impairing the aesthetic appearance and quality of the dials. According to the invention there is provided a method of manufacturing a dial with punched inlay indexes comprising placing a dial plate on a matrix of a stamp, placing a plate of a thickness greater than the thickness of the dial plate on the dial plate, and punching a section in the shape of an index, with a single stroke, from the plate and the dial plate with at least one punch of the stamp, in such a way that the section cut from the plate is punched into the dial plate so as to form a punched inlay index. In an advantageous variant of the invention, the method is characterised in that several indexes are cut with a single stroke with several punches. In another variant, the dial plate is positioned on the matrix of the stamp by means of two positioning holes. It is also possible to apply this method to a dial plate which is already equipped with lugs. In another variant, the dial plate is then cut to its final external dimensions. It is also possible to subject the dial plate with the inlaid indexes to diamonding or faceting of the indexes before or afterthe dial plate has been cut to its final dimensons. Brief description of the drawings An embodiment of the invention will now be described by way of example with reference to the accompanying drawings, wherein: Figure 1 shows a partial section of a stamp with matrix and punches, together with a dial plate positioned on the matrix; Figure 2 shows the stamp of Figure 1 after operation of the punches; and Figure 3 shows a dial with its indexes after leaving the stamp. Best mode of carrying out the invention Figure 1 shows a stamp 1 made up of a matrix 2 and punches 7. A dial 4 with two lugs 5 is positioned on the matrix 2 with the aid of two positioning holes 3. A plate 6 of a thickness greater than the thickness of the dial plate 4, and made of brass, is placed in position, on top of the dial 4, by means of the lugs 5. Figure 2 shows the stamp 1 after operation of the punches 7 which have cut, with a single stroke, sections 8 from the plate 6 and the dial plate 4. The sections 8 are punched through the dial plate 4 in such a way as to protrude beyond the latter in the form of inlaid indexes. Figure 3 shows the dial 4 after it has been removed from the stamp 1, and after operation of the punches 7 as described in connection with Figure 2. The dial thus manufactured is subjected to a final cutting operation in order to give it its final external dimensions no longer including the positioning holes 3. The method as described above can also be applied to dials without lugs 5. Such dials, for this reason, are not required to be positioned on the matrix 2 by means of positioning holes. A person skilled in the art will readily recognize that it is advantageous to choose the thickness of the plate 6 so that it correspondsto the thickness of the dial plate 4 plus the height of the indexes, so that the sections 8 forming the indexes can be punched flush in the dial plate 4. The dial manufactured in this way may then by subjected to diamonding or faceting of the final indexes. The method according to the invention is simple and inexpensive and makes it possible to obtain dials which are identical in appearance to dials with punched inlay indexes manufactured by conventional methods and which, at the same time, are less expensive. CLAIMS
1. A method of manufacturing a dial with punched inlay indexes comprising placing a dial plate (4) on a matrix (2) of a stamp (1), placing a plate (6) of a thickness greater than the thickness of the dial plate (4) on the dial plate (4), and punching a section (8) in the shape of an index, with a single stroke, from the plate (6) and the dial plate (4) with at least one punch (7) of the stamp (1), in such a way that the section (8) cut from the plate (6) is punched into the dial plate (4) so as to form a punched inlay index.
2. A method according to Claim 1, wherein several sections (8) forming several indexes are cut with a single stroke with several punches (7).
3. A method according to Claim 1 or 2, wherein the dial plate (4) is positioned on the matrix (2) by means of two positioning holes (3).
4. A method according to any preceding claim, wherein the dial plate (4) is then cut to its final desired external dimensions.
5. A method according to Claim 4, wherein the dial thus obtained is subjected to diamonding or faceting of the indexes.
6. A method of manufacturing a dial with punched inlay indexes substantially as hereinbefore described by way of example with reference to the accompanying drawings.
GB7940988A 1979-02-05 1979-11-28 Method of manufacturing a dial with punched inlay indexes Expired GB2040776B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH108679A CH624532A (en) 1979-02-05 1979-02-05

Publications (2)

Publication Number Publication Date
GB2040776A true GB2040776A (en) 1980-09-03
GB2040776B GB2040776B (en) 1982-09-08

Family

ID=4202126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7940988A Expired GB2040776B (en) 1979-02-05 1979-11-28 Method of manufacturing a dial with punched inlay indexes

Country Status (3)

Country Link
JP (1) JPS55104779A (en)
CH (1) CH624532A (en)
GB (1) GB2040776B (en)

Also Published As

Publication number Publication date
GB2040776B (en) 1982-09-08
JPS55104779A (en) 1980-08-11
CH624532B (en)
CH624532A (en) 1981-08-14

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