US20210170784A1 - Coin or medal - Google Patents
Coin or medal Download PDFInfo
- Publication number
- US20210170784A1 US20210170784A1 US17/117,811 US202017117811A US2021170784A1 US 20210170784 A1 US20210170784 A1 US 20210170784A1 US 202017117811 A US202017117811 A US 202017117811A US 2021170784 A1 US2021170784 A1 US 2021170784A1
- Authority
- US
- United States
- Prior art keywords
- coin
- medal
- soundtrack
- embossing
- embossed
- 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.)
- Pending
Links
- 238000004049 embossing Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910000510 noble metal Inorganic materials 0.000 claims description 5
- 229920002994 synthetic fiber Polymers 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 230000005923 long-lasting effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 235000019219 chocolate Nutrition 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 241000264060 Lethrinus Species 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/68—Record carriers
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C21/00—Coins; Emergency money; Beer or gambling coins or tokens, or the like
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C3/00—Medals; Badges
- A44C3/004—Medals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/009—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by multi-step processes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/68—Record carriers
- G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C3/00—Medals; Badges
- A44C3/004—Medals
- A44C3/005—Medals made of one piece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/0071—Machines or apparatus for embossing decorations or marks, e.g. embossing coins which simultaneously apply a decorative material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/02—Dies; Accessories
- B44B5/024—Work piece loading or discharging arrangements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/68—Record carriers
- G11B3/682—Record carriers comprising protective coatings, e.g. anti static, anti-friction
Definitions
- the invention relates to a coin or medal according to the preamble of claim 1 and to an embossing method according to the preamble of claim 17 .
- embossing of motifs which are formed only from arranged rows of depressions, on coins or medals and the associated embossing stamp are known from DE 601 02 007 T2.
- the colour shading of embossed images is generated by means of the distance between rows of impressions positioned very close together.
- the depth of colour can be adapted by the depth of the rows.
- Sound media for music and sound recordings are generally extensively known. Now, if these soundtracks are placed onto specific media materials, diverse application possibilities arise such as for example the miniature record made from chocolate described in DE 20 2008 003 639 U1. This is designed in such a way that it can be played by means of a commercially available record player.
- Chocolate is a highly perishable material which also does not have a high level of temperature stability. Now, if it is desired to use a miniature record for example as a memento, it is necessary to use more stable materials.
- the object of the invention is to provide a coin or medal according to the preamble of claim 1 which forms a long-lasting memento for example for a musical performance, which also has a practical use.
- a coin or medal according to the preamble of claim 1 which is designed in such a way that a soundtrack is applied to the surface by means of a suitable embossing method.
- This soundtrack should preferably be playable by means of a commercially available record player or a playback device developed for the coin or medal.
- One advantage of the solution according to the invention is the longevity of metal coin or medal which can be a memento which is usable for many years, exhibits hardly any visible changes over time, is scratch-resistant and easy to transport.
- the soundtrack in accordance with the invention which is embossed into the surface of the coin or medal, is still playable even after years and does not undergo any temperature-induced changes provided it is subject to normal outdoor temperatures and there is no intention to heat it to the melting point of the metal used.
- a further advantage of the coin or medal with an embossed soundtrack in accordance with the invention is that the coin or medal consists of solid metal, in particular of a noble metal.
- a metal is tough and also aesthetically appealing.
- Most preferred are the following metals: gold (Au), silver (Ag), platinum (Pt), palladium (Pd), copper (Cu) and nickel (Ni) as well as gilded or silvered metal blanks. Plated blanks can also be used in the method in accordance with the invention.
- a further advantage of the coin or medal with an embossed soundtrack in accordance with the invention is that, despite the smallness of the coin or medal, the information content is at least comparable with what can be held on the surface of a single record. This is because the use of metals ensures a high level of stability for the soundtrack and this can therefore be embossed more densely, i.e. the distance between the individual sound grooves can be selected to be smaller than in the case of a conventional record.
- the density of the soundtrack and the resulting information density mean that furthermore a slow rotation speed of in particular 33 rpm of a conventional record player or an even slower speed of a player device made specifically for the coin or medal can be selected.
- the coin or medal is first processed in such a way that it has the most planar and smooth surface possible.
- the coin or medal is placed as a blank (round blank) in a pressing chamber which is formed from the embossing ring with mutually opposing, mounted first and second embossing stamps.
- the embossing ring and the two embossing stamps consist of a highly pressure-resistant material.
- embossing is preferably carried out at very high pressure (about 200 to 800 to).
- the first and second embossing stamps have a very smooth surface in the direction of the embossing chamber.
- dies On at least one of the embossing stamps are located dies which is/are placed into the pressing chamber between the blank and the first and/or second embossing stamp.
- This permits simultaneous embossing of the corresponding soundtrack and/or of the motif on the side of the coin or medal opposite the soundtrack, this side having at the same time a very smooth surface, the so-called mirror finish. It would also be possible to emboss a soundtrack with a motif on one side of the coin or medal and a further motif on the side of the coin or medal opposite the soundtrack.
- the first and second embossing stamps again have a very smooth surface in the direction of the embossing chamber.
- a die which shows the negative of the desired motif is located on one of the two embossing stamps. This permits the embossing of the motif with a very smooth surface, the so-called mirror finish.
- the soundtrack is then embossed, possibly with a further motif on the side of the coin or medal opposite the motif.
- the first and second embossing stamps have a very smooth surface in the direction of the embossing chamber.
- a die is again not used.
- the second embossing step by means of at least one die which is/are placed into the pressing chamber between the blank and the first and/or second embossing stamp, the corresponding soundtrack and/or the motif is embossed on the side of the coin or medal opposite the soundtrack.
- the die it is also possible for the die not to have the diameter of the round blank but to be smaller than it. This permits the embossing of structures—such as the soundtrack—or motifs which do not extend over the entire surface of the coin or medal.
- embossing chamber in which there is a very small gap, in particular a gap of about 0.02 mm, between the embossing stamp and embossing ring is particularly favourable. This ensures that as little material as possible is lost.
- a metal plate is first provided with a synthetic material layer of in particular nitrocellulose lacquer.
- the soundtrack of the die is introduced into this synthetic material layer by means of a stylus.
- This layer is then galvanically provided with a layer of silver electrolyte, in particular 4-5 ⁇ m thick.
- a very thin separating agent is applied to the silver electrolyte layer.
- a nickel layer in particular about 250 ⁇ m thick, is galvanically applied to this layer, it is then detached and serves as a die.
- the coin or medal is provided with a central hole in the centre before or after the two embossing processes in order to permit it to be played on a commercially available record player.
- a further advantage of the solution in accordance with the invention is that the coin embossed in this way can be used on a commercially available record player with the automatic shut-off deactivated.
- FIG. 1 is a schematic illustration of the top view of a first embodiment of a coin or medal in accordance with the invention with an integrated soundtrack;
- FIG. 2 is a perspective illustration of a coin or medal in accordance with the invention with an integrated soundtrack in the embodiment according to FIG. 1 ;
- FIG. 3 is a perspective illustration of a further embodiment of a coin or medal in accordance with the invention showing an example of a motif which is embossed on the side of the coin or medal opposite the soundtrack;
- FIG. 4 is a schematic illustration in detail of a part of the soundtrack embossed on the coin or medal
- FIG. 5 is a perspective illustration of a coin or medal in accordance with the invention with an integrated soundtrack as placed by way of example in a commercially available record player shown in sketch form;
- FIG. 6 is a schematic illustration of the side view of the soundtrack embossed on the coin or medal in accordance with the invention and a schematic illustration of the point of a reproducing stylus of a sound pick-up used to pick up the soundtrack;
- FIG. 7 is a schematic illustration of the cross-section of the embossing chamber with the embossing ring, first and second embossing stamps and the blank of the coin or medal in accordance with the invention.
- FIG. 8 is a schematic illustration of the cross-section of the embossing chamber with the embossing ring, first and second embossing stamps, blank of the coin or medal in accordance with the invention and the die used to introduce the soundtrack and/or the relief on the opposite side.
- FIG. 1 shows a top view of a coin or medal 2 in accordance with the invention with a circumferential outer edge 3 .
- a coin or medal in accordance with the invention has a diameter of about 50 mm to 150 mm, in particular about 100 mm.
- a spiral-shaped soundtrack 6 is embossed on the surface 4 of the coin or metal 2 .
- the soundtrack 6 consists of a continuous uninterrupted groove which extends at a small distance from the outer edge of the coin or medal 2 to the free surface in the middle thereof.
- This free surface in the middle of the coin or medal 2 in which there is no soundtrack 6 is necessary since this region, by reason of the design of a commercially available record player 12 , cannot be played and has a diameter of approximately 20 mm to 50 mm in the case of a coin and 50 to 100 mm in the case of a medal.
- a dedicated playing device for the coin or medal 2 is made, it would be possible to make it in such a way that this free surface can be avoided and the soundtrack 6 can extend as far as the centre of the coin or medal 2 .
- a central hole 8 is provided in the centre of the coin or medal in order to render it playable using a commercially available record player. If, again, a dedicated playing device for the coin or medal 2 is chosen, it would be possible to replace this central hole 8 by a depression or even to avoid it altogether by a fixing arrangement using the turntable 20 .
- FIG. 2 shows a perspective side view of a coin or medal 2 in accordance with the invention with a circumferential outer edge 3 . Again, the soundtrack 6 and the central hole 8 are shown.
- FIG. 3 shows another perspective side view of a coin or medal 2 in accordance with the invention with a circumferential outer edge 3 .
- the central hole 8 is again shown but now from the rear side (the side of the coin or medal 2 opposite the soundtrack).
- an example of a motif or relief 10 can be seen which can be embossed on this side of the coin.
- FIG. 4 is a schematic illustration in detail of a section of the soundtrack 6 embossed on the coin or medal.
- the surface 4 of the coin consists of a material which is tough and also aesthetically appealing.
- the following are proposed, inter alia, especially the non-ferrous and noble metals: gold (Au), silver (Ag), platinum (Pt), palladium (Pd), copper (Cu) and nickel (Ni) as well as gilded or silvered metal blanks, but also steel.
- FIG. 4 shows that the soundtrack 6 can extend straight or in an undulating manner.
- the way the “lateral” deflection of the soundtrack 6 extends corresponds to the acoustic oscillation of the stored signal and can be converted into an acoustic signal by means of the tip of a reproducing stylus 14 of a sound pick-up 16 illustrated in FIG. 5 and FIG. 6 .
- FIG. 5 shows a schematic perspective view of the coin or medal 2 with an integrated soundtrack 6 in accordance with the invention as placed by way of example on the turntable 20 of a commercially available record player 12 shown in sketch form.
- the centre spindle 18 of the record player 12 therefore centres the medal or coin 2 on the turntable 20 by passing through the central hole 18 .
- the soundtrack 6 can be converted into an acoustic signal with the aid of the tip of a reproducing stylus 14 of the sound pick-up 16 .
- FIG. 6 shows a schematic illustration of the side view of the soundtrack 6 embossed on the coin or medal 2 and a schematic illustration of the reproducing stylus 14 with the associated left 16 a and right 16 b coil of the sound pick-up 16 .
- the depth of the soundtrack 6 can be used to permit an additional depth movement in addition to the sideways movement. It is therefore possible to reproduce the piece embossed in the soundtrack in stereo, wherein one channel is characterised by the vertical movement, the second by the horizontal movement.
- the groove of the soundtrack 6 is of a “V” shape, in particular with an angle of inclination of the flanks of 45° with respect to the surface 4 of the coin or medal 2 .
- FIG. 6 show examples of options for varying the depth of the soundtrack. This is shown by way of example on the left side but the right side can also be described instead of this. This makes no difference since a commercially available record player 12 has a left 16 a and a right 16 b coil in the sound pick-up 16 .
- the width of the soundtrack 6 therefore changes or—if the width is kept constant—the angle of inclination of the flanks necessarily changes.
- a change in the width of the soundtrack 6 is feasible in the case of a coin or medal 2 but is not worth attempting since it requires greater spacing of the grooves and therefore influences the information density.
- a change in the angle of inclination of the flanks symmetrically or even asymmetrically with respect to the centre point of the soundtrack 6 is favourable when using a dedicated playing device for the coin or medal 2 with a correspondingly adapted tip on the reproducing stylus 14 of the sound pick-up 16 .
- FIG. 7 illustrates a cross-sectional view through the embossing chamber 22 with an embossing ring 24 , first 26 a and second 26 b embossing stamps 26 and the blank 28 of the coin or medal 2 .
- a very small gap in particular a gap of 0.02 mm, is provided in the embossing chamber 22 between the embossing stamp 26 and embossing ring 24 .
- the embossing ring 24 lies very closely against the blank 28 of the coin or medal 2 in order to avoid deformation of the blank 28 of the coin or medal 2 during the embossing process.
- FIG. 8 shows the same cross-sectional view through the embossing chamber 22 as in FIG. 7 but in this case additionally the first 30 a and second 30 b dies 30 , one for embossing the soundtrack 6 and one for embossing the motif or relief 10 on the side of the coin or medal 2 opposite the soundtrack 6 .
Abstract
Description
- The invention relates to a coin or medal according to the preamble of claim 1 and to an embossing method according to the preamble of claim 17.
- It has always been the case that coins and medals have been used not only as a means of payment but also to immortalise kings and emperors. The use of coins or medals as gift items to communicate information is known from DE 10 2004 033 356 A1. In that case a storage medium (for example a USB stick) is used which is incorporated into the interior of the coin or medal. The surface of the coin or medal serves in that instance for decorative purposes.
- The embossing of motifs, which are formed only from arranged rows of depressions, on coins or medals and the associated embossing stamp are known from DE 601 02 007 T2. In that case, the colour shading of embossed images is generated by means of the distance between rows of impressions positioned very close together. The depth of colour can be adapted by the depth of the rows. These very closely positioned rows of depressions are engraved by means of laser technology.
- Sound media for music and sound recordings are generally extensively known. Now, if these soundtracks are placed onto specific media materials, diverse application possibilities arise such as for example the miniature record made from chocolate described in
DE 20 2008 003 639 U1. This is designed in such a way that it can be played by means of a commercially available record player. - Chocolate is a highly perishable material which also does not have a high level of temperature stability. Now, if it is desired to use a miniature record for example as a memento, it is necessary to use more stable materials.
- Therefore, the object of the invention is to provide a coin or medal according to the preamble of claim 1 which forms a long-lasting memento for example for a musical performance, which also has a practical use.
- In accordance with the invention, this object is achieved by claim 1 or 17. Advantageous developments are apparent from the dependent claims.
- This is achieved in that a coin or medal according to the preamble of claim 1 is provided which is designed in such a way that a soundtrack is applied to the surface by means of a suitable embossing method. This soundtrack should preferably be playable by means of a commercially available record player or a playback device developed for the coin or medal.
- The use of a coin is particularly favourable since a widely used symbolism is inherent therein which is known to practically everyone. Coins are the most widely used means of payment and are often also used as lucky charms.
- One advantage of the solution according to the invention is the longevity of metal coin or medal which can be a memento which is usable for many years, exhibits hardly any visible changes over time, is scratch-resistant and easy to transport.
- The soundtrack in accordance with the invention, which is embossed into the surface of the coin or medal, is still playable even after years and does not undergo any temperature-induced changes provided it is subject to normal outdoor temperatures and there is no intention to heat it to the melting point of the metal used.
- A further advantage of the coin or medal with an embossed soundtrack in accordance with the invention is that the coin or medal consists of solid metal, in particular of a noble metal. Such a metal is tough and also aesthetically appealing. Most preferred are the following metals: gold (Au), silver (Ag), platinum (Pt), palladium (Pd), copper (Cu) and nickel (Ni) as well as gilded or silvered metal blanks. Plated blanks can also be used in the method in accordance with the invention.
- A further advantage of the coin or medal with an embossed soundtrack in accordance with the invention is that, despite the smallness of the coin or medal, the information content is at least comparable with what can be held on the surface of a single record. This is because the use of metals ensures a high level of stability for the soundtrack and this can therefore be embossed more densely, i.e. the distance between the individual sound grooves can be selected to be smaller than in the case of a conventional record. The density of the soundtrack and the resulting information density mean that furthermore a slow rotation speed of in particular 33 rpm of a conventional record player or an even slower speed of a player device made specifically for the coin or medal can be selected.
- The use of a soundtrack on the coin or medal, the groove of which is embossed in a V-shape into the surface of the coin or medal, is particularly favourable, and this “V” has in particular an angle of inclination to the horizontal, i.e. to the surface of the coin or medal, of 45°, which permits the storage of information of a stereo recording.
- In an advantageous development, provision is made that, before embossing of the soundtrack, the coin or medal is first processed in such a way that it has the most planar and smooth surface possible. For this purpose, the coin or medal is placed as a blank (round blank) in a pressing chamber which is formed from the embossing ring with mutually opposing, mounted first and second embossing stamps. The embossing ring and the two embossing stamps consist of a highly pressure-resistant material.
- In the embossing step, embossing is preferably carried out at very high pressure (about 200 to 800 to).
- In one advantageous embodiment, the first and second embossing stamps have a very smooth surface in the direction of the embossing chamber. On at least one of the embossing stamps are located dies which is/are placed into the pressing chamber between the blank and the first and/or second embossing stamp. This permits simultaneous embossing of the corresponding soundtrack and/or of the motif on the side of the coin or medal opposite the soundtrack, this side having at the same time a very smooth surface, the so-called mirror finish. It would also be possible to emboss a soundtrack with a motif on one side of the coin or medal and a further motif on the side of the coin or medal opposite the soundtrack.
- In a further advantageous embodiment, the first and second embossing stamps again have a very smooth surface in the direction of the embossing chamber. A die which shows the negative of the desired motif is located on one of the two embossing stamps. This permits the embossing of the motif with a very smooth surface, the so-called mirror finish. In a second embossing step, by means of a further die, the soundtrack is then embossed, possibly with a further motif on the side of the coin or medal opposite the motif.
- In a further advantageous embodiment, the first and second embossing stamps have a very smooth surface in the direction of the embossing chamber. In this case, in order to achieve optimal compacting and the smoothing out of any unevenness on the surface (mirror finish) of the blank a die is again not used. In the second embossing step, by means of at least one die which is/are placed into the pressing chamber between the blank and the first and/or second embossing stamp, the corresponding soundtrack and/or the motif is embossed on the side of the coin or medal opposite the soundtrack.
- It is also possible for the die not to have the diameter of the round blank but to be smaller than it. This permits the embossing of structures—such as the soundtrack—or motifs which do not extend over the entire surface of the coin or medal.
- The use of an embossing chamber in which there is a very small gap, in particular a gap of about 0.02 mm, between the embossing stamp and embossing ring is particularly favourable. This ensures that as little material as possible is lost.
- In an advantageous development of the solution in accordance with the invention, the use in particular of a galvanically produced die is provided for.
- For this purpose, a metal plate is first provided with a synthetic material layer of in particular nitrocellulose lacquer. As in the case of a record, the soundtrack of the die is introduced into this synthetic material layer by means of a stylus.
- This layer is then galvanically provided with a layer of silver electrolyte, in particular 4-5 μm thick.
- A very thin separating agent is applied to the silver electrolyte layer.
- A nickel layer, in particular about 250 μm thick, is galvanically applied to this layer, it is then detached and serves as a die.
- It is particularly favourable if the coin or medal is provided with a central hole in the centre before or after the two embossing processes in order to permit it to be played on a commercially available record player.
- A further advantage of the solution in accordance with the invention is that the coin embossed in this way can be used on a commercially available record player with the automatic shut-off deactivated.
- Further advantages, details and features will be apparent from the following description of several exemplified embodiments of the invention with reference to the drawing.
- In the drawings:
-
FIG. 1 is a schematic illustration of the top view of a first embodiment of a coin or medal in accordance with the invention with an integrated soundtrack; -
FIG. 2 is a perspective illustration of a coin or medal in accordance with the invention with an integrated soundtrack in the embodiment according toFIG. 1 ; -
FIG. 3 is a perspective illustration of a further embodiment of a coin or medal in accordance with the invention showing an example of a motif which is embossed on the side of the coin or medal opposite the soundtrack; -
FIG. 4 is a schematic illustration in detail of a part of the soundtrack embossed on the coin or medal; -
FIG. 5 is a perspective illustration of a coin or medal in accordance with the invention with an integrated soundtrack as placed by way of example in a commercially available record player shown in sketch form; -
FIG. 6 is a schematic illustration of the side view of the soundtrack embossed on the coin or medal in accordance with the invention and a schematic illustration of the point of a reproducing stylus of a sound pick-up used to pick up the soundtrack; -
FIG. 7 is a schematic illustration of the cross-section of the embossing chamber with the embossing ring, first and second embossing stamps and the blank of the coin or medal in accordance with the invention; and -
FIG. 8 is a schematic illustration of the cross-section of the embossing chamber with the embossing ring, first and second embossing stamps, blank of the coin or medal in accordance with the invention and the die used to introduce the soundtrack and/or the relief on the opposite side. -
FIG. 1 shows a top view of a coin ormedal 2 in accordance with the invention with a circumferentialouter edge 3. A coin or medal in accordance with the invention has a diameter of about 50 mm to 150 mm, in particular about 100 mm. A spiral-shapedsoundtrack 6 is embossed on thesurface 4 of the coin ormetal 2. As in the case of a commercially available record, thesoundtrack 6 consists of a continuous uninterrupted groove which extends at a small distance from the outer edge of the coin ormedal 2 to the free surface in the middle thereof. This free surface in the middle of the coin ormedal 2 in which there is nosoundtrack 6 is necessary since this region, by reason of the design of a commerciallyavailable record player 12, cannot be played and has a diameter of approximately 20 mm to 50 mm in the case of a coin and 50 to 100 mm in the case of a medal. However, if a dedicated playing device for the coin ormedal 2 is made, it would be possible to make it in such a way that this free surface can be avoided and thesoundtrack 6 can extend as far as the centre of the coin ormedal 2. Acentral hole 8 is provided in the centre of the coin or medal in order to render it playable using a commercially available record player. If, again, a dedicated playing device for the coin ormedal 2 is chosen, it would be possible to replace thiscentral hole 8 by a depression or even to avoid it altogether by a fixing arrangement using theturntable 20. -
FIG. 2 shows a perspective side view of a coin ormedal 2 in accordance with the invention with a circumferentialouter edge 3. Again, thesoundtrack 6 and thecentral hole 8 are shown. -
FIG. 3 shows another perspective side view of a coin ormedal 2 in accordance with the invention with a circumferentialouter edge 3. In this illustration, thecentral hole 8 is again shown but now from the rear side (the side of the coin ormedal 2 opposite the soundtrack). Furthermore, an example of a motif orrelief 10 can be seen which can be embossed on this side of the coin. -
FIG. 4 is a schematic illustration in detail of a section of thesoundtrack 6 embossed on the coin or medal. In accordance with the invention, thesurface 4 of the coin consists of a material which is tough and also aesthetically appealing. For this purpose the following are proposed, inter alia, especially the non-ferrous and noble metals: gold (Au), silver (Ag), platinum (Pt), palladium (Pd), copper (Cu) and nickel (Ni) as well as gilded or silvered metal blanks, but also steel. Furthermore,FIG. 4 shows that thesoundtrack 6 can extend straight or in an undulating manner. The way the “lateral” deflection of thesoundtrack 6 extends corresponds to the acoustic oscillation of the stored signal and can be converted into an acoustic signal by means of the tip of a reproducingstylus 14 of a sound pick-up 16 illustrated inFIG. 5 andFIG. 6 . -
FIG. 5 shows a schematic perspective view of the coin ormedal 2 with anintegrated soundtrack 6 in accordance with the invention as placed by way of example on theturntable 20 of a commerciallyavailable record player 12 shown in sketch form. Thecentre spindle 18 of therecord player 12 therefore centres the medal orcoin 2 on theturntable 20 by passing through thecentral hole 18. Thesoundtrack 6 can be converted into an acoustic signal with the aid of the tip of a reproducingstylus 14 of the sound pick-up 16. -
FIG. 6 shows a schematic illustration of the side view of thesoundtrack 6 embossed on the coin ormedal 2 and a schematic illustration of the reproducingstylus 14 with the associated left 16 a and right 16 b coil of the sound pick-up 16. The depth of thesoundtrack 6 can be used to permit an additional depth movement in addition to the sideways movement. It is therefore possible to reproduce the piece embossed in the soundtrack in stereo, wherein one channel is characterised by the vertical movement, the second by the horizontal movement. The groove of thesoundtrack 6 is of a “V” shape, in particular with an angle of inclination of the flanks of 45° with respect to thesurface 4 of the coin ormedal 2. - The broken lines in
FIG. 6 show examples of options for varying the depth of the soundtrack. This is shown by way of example on the left side but the right side can also be described instead of this. This makes no difference since a commerciallyavailable record player 12 has a left 16 a and a right 16 b coil in the sound pick-up 16. - If the depth of the
soundtrack 6 is varied on both sides of the groove at the same time, the width of thesoundtrack 6 therefore changes or—if the width is kept constant—the angle of inclination of the flanks necessarily changes. A change in the width of thesoundtrack 6 is feasible in the case of a coin ormedal 2 but is not worth attempting since it requires greater spacing of the grooves and therefore influences the information density. A change in the angle of inclination of the flanks symmetrically or even asymmetrically with respect to the centre point of thesoundtrack 6 is favourable when using a dedicated playing device for the coin ormedal 2 with a correspondingly adapted tip on the reproducingstylus 14 of the sound pick-up 16. However, in order to play the coin ormedal 2 by means of a commerciallyavailable record player 12 it would be necessary to dispense with a change to the angle of inclination of the flanks with respect to thesurface 4 since such a change impairs the playing by the tip of a commercially available reproducingstylus 14. -
FIG. 7 illustrates a cross-sectional view through theembossing chamber 22 with anembossing ring 24, first 26 a and second 26 b embossing stamps 26 and the blank 28 of the coin ormedal 2. It is particularly favourable if a very small gap, in particular a gap of 0.02 mm, is provided in theembossing chamber 22 between the embossing stamp 26 andembossing ring 24. This ensures that as little material of the blank 28 as possible is lost. Optimally, theembossing ring 24 lies very closely against the blank 28 of the coin ormedal 2 in order to avoid deformation of the blank 28 of the coin ormedal 2 during the embossing process. By means of this structure and the very smooth surface of the first 26 a and second 26 b embossing stamps 26 it is possible to achieve optimal compaction and smoothing out of any unevenness on the surface of the blank 28. -
FIG. 8 shows the same cross-sectional view through theembossing chamber 22 as inFIG. 7 but in this case additionally the first 30 a and second 30 b dies 30, one for embossing thesoundtrack 6 and one for embossing the motif orrelief 10 on the side of the coin ormedal 2 opposite thesoundtrack 6.
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019133806.9A DE102019133806A1 (en) | 2019-12-10 | 2019-12-10 | Coin or medal |
DE102019133806.9 | 2019-12-10 |
Publications (1)
Publication Number | Publication Date |
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US20210170784A1 true US20210170784A1 (en) | 2021-06-10 |
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ID=74141255
Family Applications (1)
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US17/117,811 Pending US20210170784A1 (en) | 2019-12-10 | 2020-12-10 | Coin or medal |
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US (1) | US20210170784A1 (en) |
EP (1) | EP3834653B1 (en) |
JP (1) | JP2021121307A (en) |
KR (1) | KR20210074212A (en) |
CN (1) | CN112951278A (en) |
AU (1) | AU2020286240A1 (en) |
CA (1) | CA3102157A1 (en) |
DE (1) | DE102019133806A1 (en) |
DK (1) | DK3834653T3 (en) |
ES (1) | ES2943910T3 (en) |
FI (1) | FI3834653T3 (en) |
PL (1) | PL3834653T3 (en) |
PT (1) | PT3834653T (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20220294240A1 (en) * | 2021-03-09 | 2022-09-15 | Yuyi Lee | Power solution cradle dock |
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DE102019133806A1 (en) | 2019-12-10 | 2021-06-10 | B.H. Mayer's Kunstprägeanstalt GmbH | Coin or medal |
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Cited By (1)
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---|---|---|---|---|
US20220294240A1 (en) * | 2021-03-09 | 2022-09-15 | Yuyi Lee | Power solution cradle dock |
Also Published As
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PL3834653T3 (en) | 2023-06-05 |
FI3834653T3 (en) | 2023-05-08 |
CA3102157A1 (en) | 2021-06-10 |
KR20210074212A (en) | 2021-06-21 |
EP3834653B1 (en) | 2023-02-15 |
CN112951278A (en) | 2021-06-11 |
AU2020286240A1 (en) | 2021-06-24 |
JP2021121307A (en) | 2021-08-26 |
EP3834653A1 (en) | 2021-06-16 |
DK3834653T3 (en) | 2023-05-01 |
DE102019133806A1 (en) | 2021-06-10 |
ES2943910T3 (en) | 2023-06-16 |
PT3834653T (en) | 2023-05-11 |
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