WO2005083674A1 - Device for drums - Google Patents

Device for drums Download PDF

Info

Publication number
WO2005083674A1
WO2005083674A1 PCT/NO2005/000068 NO2005000068W WO2005083674A1 WO 2005083674 A1 WO2005083674 A1 WO 2005083674A1 NO 2005000068 W NO2005000068 W NO 2005000068W WO 2005083674 A1 WO2005083674 A1 WO 2005083674A1
Authority
WO
WIPO (PCT)
Prior art keywords
void
drum
drum shell
shell
fastened
Prior art date
Application number
PCT/NO2005/000068
Other languages
French (fr)
Inventor
Trond Kopperud
Original Assignee
Trond Kopperud
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 Trond Kopperud filed Critical Trond Kopperud
Publication of WO2005083674A1 publication Critical patent/WO2005083674A1/en

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D13/00—Percussion musical instruments; Details or accessories therefor
    • G10D13/10—Details of, or accessories for, percussion musical instruments
    • G10D13/20—Drumheads
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D13/00—Percussion musical instruments; Details or accessories therefor
    • G10D13/01—General design of percussion musical instruments
    • G10D13/02—Drums; Tambourines with drumheads
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D13/00—Percussion musical instruments; Details or accessories therefor
    • G10D13/10—Details of, or accessories for, percussion musical instruments
    • G10D13/24—Material for manufacturing percussion musical instruments; Treatment of the material

Definitions

  • the present invention relates to a device for drums, in order to fasten, tighten and tune the drum heads, according to the preamble of claim 1.
  • a conventional drum comprises a drum shell, drum heads, rims, and devices to fasten the heads to the shell, and to tighten and tune these.
  • the drum shells on conventional drums are usually made of wood materials, while the rims and the devices for fastening the heads (also called lugs) are made of metal.
  • Drums having a shell, and heads of transparent plastic are, however, known, but the rims and lugs are still made of metal.
  • One example of such drums are given in US 3,626,458, where the drum heads, rims, and shell are made of a transparent material, preferably a polymeric material such as polymethylmetacrylat.
  • Conventional lugs are made of metal, and they are being used in pairs, wherein one tightens one drum head and the other tightens the other drum head.
  • the lugs are fastened directly to the shell with screws, typically two screws per lug, but it can also be just one.
  • One head is fastened over each end of the shell by means of the rims, and tightened with tension bolts fastened in the lugs.
  • the main object of the invention is to provide devices for tightening and tuning drum heads on a drum shell, without the aforementioned problems. It is a further object that a drum including the devices, according to the invention, should give a more precise and defined sound than conventional drums. Finally, it is an object that the device should be easy and cost-effective to produce.
  • the invention comprises devices for fastening and tuning drum heads, according to the characterizing part of claim 1. Further advantageous features are stated in the dependent claims.
  • the devices, according to the present invention are extended, and have the shape of a bar, so that both drum heads are tightened by means of the same devices, as one head is tightened by tension bolts fastened in one end of a device, and the other head is being tightened by tension bolts fastened in the other end of the same device.
  • the devices are fastened to the drum shell in a conventional way, as screws are screwed from the inside of the shell, out through the wall of the drum shell, and into the device.
  • the devices can be fastened to the shell with a minimum number of screws, for example, one or two screws per device. It is also possible to make devices according to the present invention, which may not be fastened to the shell, or which may be fastened by other means.
  • the device according to the present invention, has a longitudinal bore in each end for receiving tension bolts for tightening the drum heads in a conventional way.
  • the devices are further made with a transverse void close to each end, wherein the transverse void is crossing the longitudinal bore.
  • the void is preferably extended, and preferably in a tangential direction to the wall of the drum shell, when the device is fastened to the shell.
  • the transverse void receives a nut having a tlireaded hole.
  • Figure 1 shows a part of a cross-section of a drum, having the device according to the present invention fastened to the outside, the cross-section is through the device.
  • Figure 2 shows the device according to the present invention, in front view.
  • the drum comprises a drum head 1 fastened to the drum shell 2 by a rim 3, which is fastened to devices 4, according to the present invention, on the outside of the drum shell 2.
  • the drum head 1 is tightened and tuned by tightening tension bolts 5 between the rim 3 and the device 4.
  • the device 4 has a longitudinal bore 9 in each end, extending down from the end of the device.
  • the longitudinal bore 9 accommodates the tension bolts 5 extending down from rim 3.
  • the device has a transversal void 6 in open connection with the longitudinal bore 9, and locates a nut 7, with a threaded hole 8.
  • the tension bolt 5 extends down from the longitudinal bore 9 in the device 4, can engage with the nut 7, being inside the transversal void 6.
  • the void is extended, preferably in a tangential direction to the drum shell 2, when the device 4 is installed.
  • the void may extend through the whole device so that a hole transverse to the device 4, is made.
  • the nut is shaped as a cylinder, and that the axis of the threaded hole is perpendicular to the longitudinal axis of the cylinder. It is a further advantage that the hole 8 is placed centrally on the length of the cylinder 7, and that the length of the cylinder 7 corresponds to the length of the transverse, extended void 6.
  • the length of the cylinder 7 corresponds to a width B of the device 4.
  • the device 4 is preferably fastened to the outside of the drum shell 2 with fastening screws 10.
  • One screw 10 in the upper end, and one screw in the lower end of the device 4 is sufficient to keep it in place.
  • Embodiments using one fastening screw in the middle, or embodiments not being fastened to the drum shell 2 but floating freely and only being fastened to the rims 3, are possible.
  • the device 4 By using such extended devices with two or less fastening screws 10 a distance from each other, for tightening and tuning the drum heads 1, the device 4 itself will absorb the tensile forces so that the area of the drum shell 2 surrounding the fastening screws 10 will not be under tension. Thus, there will be less danger for fatigue fractures in the drum shell 2, than by use of conventional lugs. This is particularly true for drums where the shell is made of acryl. On the side of the device 4 turning towards the drum shell 2, the device is provided with a recess 11, in such a way that only those parts of the device comprising the screws 10 for fastening the device to the drum shell 2, bear against the shell 2.
  • the device shown in the Figures is also provided with a recess 12 on the side turning away from the drum shell 2.
  • This recess has no function beyond the visual, as the devices receive a slimmer and more attractive appearance. It would be an advantage to produce the devices according to the present invention in plastic or other materials with corresponding properties.
  • the devices being fastened to the outside of the drum may be exposed to impacts and hits, especially when the drum is being transported. Devices made of plastic will be able to absorb parts of the impact and/or break, rather than breaking the drum shell itself.
  • the devices 4 according to the present invention are made of a transparent plastic material, preferably polymethylmetacrylat. This material is relatively hard compared to other transparent plastic materials, so that it is not easily scratched, and it can be polished. This will have influence on the brightness of the material.
  • the devices 4 may be made of a sheet material, as they are stamped out of a sheet, preferably in such a way that the width B corresponds to the thickness of the sheet. The devices 4 may of course also be stamped out in such a way that the depth D corresponds to the thickness of the sheet, but in this case, the production-process will require more steps and thus be more labour intensive.

Abstract

Bar-shaped device (4) for drums, being placed between two rims (3) to tighten two drum heads (1), one over each end of the drum shell (2) respectively, the device is fastened to each of the rims (3) with tension bolts (5) interacting with a nut (7) being anchored to the proximal end of the device (4). The device is further provided with a longitudinal bore (9) for the tension bolt, and in each end it has a transversal void (6) in open connection with the longitudinal bore (9). The transversal void (6) receives the nut (7) with the hole (8) in the longitudinal direction of the tension bolt (5). Further, the device is made of a plastic material.

Description

Device for drums
The present invention relates to a device for drums, in order to fasten, tighten and tune the drum heads, according to the preamble of claim 1.
Background A conventional drum comprises a drum shell, drum heads, rims, and devices to fasten the heads to the shell, and to tighten and tune these. The drum shells on conventional drums, are usually made of wood materials, while the rims and the devices for fastening the heads (also called lugs) are made of metal. Drums having a shell, and heads of transparent plastic are, however, known, but the rims and lugs are still made of metal. One example of such drums are given in US 3,626,458, where the drum heads, rims, and shell are made of a transparent material, preferably a polymeric material such as polymethylmetacrylat. Conventional lugs are made of metal, and they are being used in pairs, wherein one tightens one drum head and the other tightens the other drum head. The lugs are fastened directly to the shell with screws, typically two screws per lug, but it can also be just one. One head is fastened over each end of the shell by means of the rims, and tightened with tension bolts fastened in the lugs. When using drums of transparent material, for example acryl, in combination with conventional lugs of, for example, metal, the tension arising in the area surrounding the screws in which the lugs are fastened gets so high compared to the tensile strength of the shell material, that fatigue fractures often occur in the drum shell.
Object The main object of the invention is to provide devices for tightening and tuning drum heads on a drum shell, without the aforementioned problems. It is a further object that a drum including the devices, according to the invention, should give a more precise and defined sound than conventional drums. Finally, it is an object that the device should be easy and cost-effective to produce.
The invention The invention comprises devices for fastening and tuning drum heads, according to the characterizing part of claim 1. Further advantageous features are stated in the dependent claims. The devices, according to the present invention, are extended, and have the shape of a bar, so that both drum heads are tightened by means of the same devices, as one head is tightened by tension bolts fastened in one end of a device, and the other head is being tightened by tension bolts fastened in the other end of the same device. The devices are fastened to the drum shell in a conventional way, as screws are screwed from the inside of the shell, out through the wall of the drum shell, and into the device. According to the invention, where extended devices are used with one end fastened to one of the rims, and the other end fastened to the other rim, the devices can be fastened to the shell with a minimum number of screws, for example, one or two screws per device. It is also possible to make devices according to the present invention, which may not be fastened to the shell, or which may be fastened by other means. The device, according to the present invention, has a longitudinal bore in each end for receiving tension bolts for tightening the drum heads in a conventional way. The devices are further made with a transverse void close to each end, wherein the transverse void is crossing the longitudinal bore. The void is preferably extended, and preferably in a tangential direction to the wall of the drum shell, when the device is fastened to the shell. The transverse void receives a nut having a tlireaded hole. When the device is installed, the tension bolts for tightening and tuning the heads reach from the rim, through the longitudinal bore of the device, and into interaction with the threaded hole in the nut, located in the transversal void.
Example The invention will, in the following, be described by means of an example, for illustrative and not limiting purposes. Figure 1 shows a part of a cross-section of a drum, having the device according to the present invention fastened to the outside, the cross-section is through the device. Figure 2 shows the device according to the present invention, in front view.
The drum comprises a drum head 1 fastened to the drum shell 2 by a rim 3, which is fastened to devices 4, according to the present invention, on the outside of the drum shell 2. The drum head 1 is tightened and tuned by tightening tension bolts 5 between the rim 3 and the device 4. The device 4 has a longitudinal bore 9 in each end, extending down from the end of the device. The longitudinal bore 9 accommodates the tension bolts 5 extending down from rim 3. Further, the device has a transversal void 6 in open connection with the longitudinal bore 9, and locates a nut 7, with a threaded hole 8. The tension bolt 5 extends down from the longitudinal bore 9 in the device 4, can engage with the nut 7, being inside the transversal void 6. In a particularly preferred embodiment of the present invention, the void is extended, preferably in a tangential direction to the drum shell 2, when the device 4 is installed. The void may extend through the whole device so that a hole transverse to the device 4, is made. In cases where the void is extended, it is preferable that the nut is shaped as a cylinder, and that the axis of the threaded hole is perpendicular to the longitudinal axis of the cylinder. It is a further advantage that the hole 8 is placed centrally on the length of the cylinder 7, and that the length of the cylinder 7 corresponds to the length of the transverse, extended void 6. In cases where the void 6 is thorough, and in a tangential direction to the drum shell 2, it would be an advantage that the length of the cylinder 7 corresponds to a width B of the device 4. The device 4 is preferably fastened to the outside of the drum shell 2 with fastening screws 10. One screw 10 in the upper end, and one screw in the lower end of the device 4 is sufficient to keep it in place. Embodiments using one fastening screw in the middle, or embodiments not being fastened to the drum shell 2 but floating freely and only being fastened to the rims 3, are possible. By using such extended devices with two or less fastening screws 10 a distance from each other, for tightening and tuning the drum heads 1, the device 4 itself will absorb the tensile forces so that the area of the drum shell 2 surrounding the fastening screws 10 will not be under tension. Thus, there will be less danger for fatigue fractures in the drum shell 2, than by use of conventional lugs. This is particularly true for drums where the shell is made of acryl. On the side of the device 4 turning towards the drum shell 2, the device is provided with a recess 11, in such a way that only those parts of the device comprising the screws 10 for fastening the device to the drum shell 2, bear against the shell 2. With this recess 11 the disturbance of the vibration in the drum shell 2 when the drum is in use, is minimized, and a drum with such devices will have a more precise and defined sound than drums having conventional devices. The device shown in the Figures is also provided with a recess 12 on the side turning away from the drum shell 2. This recess has no function beyond the visual, as the devices receive a slimmer and more attractive appearance. It would be an advantage to produce the devices according to the present invention in plastic or other materials with corresponding properties. The devices being fastened to the outside of the drum may be exposed to impacts and hits, especially when the drum is being transported. Devices made of plastic will be able to absorb parts of the impact and/or break, rather than breaking the drum shell itself. This is a substantial difference from known devices made of, for example, metal, wherein the whole impact is being transferred to the drum shell and may damage it. It is considerably simpler and cheaper to replace a broken device, than replacing the drum shell itself. The devices 4 according to the present invention are made of a transparent plastic material, preferably polymethylmetacrylat. This material is relatively hard compared to other transparent plastic materials, so that it is not easily scratched, and it can be polished. This will have influence on the brightness of the material. Further, the devices 4 may be made of a sheet material, as they are stamped out of a sheet, preferably in such a way that the width B corresponds to the thickness of the sheet. The devices 4 may of course also be stamped out in such a way that the depth D corresponds to the thickness of the sheet, but in this case, the production-process will require more steps and thus be more labour intensive.

Claims

Patent claims
1. Bar-shaped device (4) for drums, being placed between two rims (3) to tighten and tune two drum heads (1), one over each end of a drum shell (2) respectively, the device is fastened to each of the rims (3) with tension bolts (5) interacting with a nut (7) being anchored in the proximal end of the device (4), the device (4) is further provided with a longitudinal bore (9) that may receive the tension bolt (5), characterized in that each end the device has a transversal void (6) in open comiection with the longitudinal bore (9), as the transversal void (6) receives the nut (7) with the hole (8) in the longitudinal direction of the tension bolt (5), and in that the device is made of a plastic material.
2. Device according to claim 1, characterized in that the transversal void (6) is extended.
3. Device according to claim 2, characterized in that the void is in a tangential direction to the drum shell (2), when the device (4) is installed on the drum shell (2).
4. Device according to claims 2 and 3, characterized in that the void (6) is thorough.
5. Device according to any one of claims 2-4, characterized in that the nut (7) is cylindrical having a length corresponding to the length of the void (6), and that the axis of the threaded hole (8) is perpendicular to the longitudinal axis of the cylinder.
6. Device according to any one of the claims 1-5, characterized in that the device (4) is anchored to the drum shell (2) with at the least one screw passing through the wall of the drum shell.
7. Device according to any one of claims 1-6, characterized in that the plastic material is at the least partly transparent.
8. Device according to any one of claims 1-7, characterized in that it is stamped out of a sheet material, preferably in such a way that the width (B) corresponds to the thickness of the sheet.
PCT/NO2005/000068 2004-02-27 2005-02-22 Device for drums WO2005083674A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20040870 2004-02-27
NO20040870A NO319976B1 (en) 2004-02-27 2004-02-27 Device by drums.

Publications (1)

Publication Number Publication Date
WO2005083674A1 true WO2005083674A1 (en) 2005-09-09

Family

ID=34793452

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2005/000068 WO2005083674A1 (en) 2004-02-27 2005-02-22 Device for drums

Country Status (2)

Country Link
NO (1) NO319976B1 (en)
WO (1) WO2005083674A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587260A (en) * 1944-12-07 1947-04-18 Charles Frederick Deans Improvements in drum head tensioning devices
US4570526A (en) * 1984-04-20 1986-02-18 Hoshino Gakki Co., Ltd. Tensioning device for a drum head
US4693163A (en) * 1986-08-04 1987-09-15 Hsieh Ching L Drum head lug assembly
US4694726A (en) * 1983-08-19 1987-09-22 Greg Taylor Drum skin tightening arrangement
US4928566A (en) * 1988-10-20 1990-05-29 Pearl Musical Instrument Co. Device for applying tension to a pair of drum heads

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587260A (en) * 1944-12-07 1947-04-18 Charles Frederick Deans Improvements in drum head tensioning devices
US4694726A (en) * 1983-08-19 1987-09-22 Greg Taylor Drum skin tightening arrangement
US4570526A (en) * 1984-04-20 1986-02-18 Hoshino Gakki Co., Ltd. Tensioning device for a drum head
US4693163A (en) * 1986-08-04 1987-09-15 Hsieh Ching L Drum head lug assembly
US4928566A (en) * 1988-10-20 1990-05-29 Pearl Musical Instrument Co. Device for applying tension to a pair of drum heads

Also Published As

Publication number Publication date
NO20040870D0 (en) 2004-02-27
NO319976B1 (en) 2005-10-03

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