EP0309212A2 - Cibles pour fléchettes - Google Patents

Cibles pour fléchettes Download PDF

Info

Publication number
EP0309212A2
EP0309212A2 EP88308730A EP88308730A EP0309212A2 EP 0309212 A2 EP0309212 A2 EP 0309212A2 EP 88308730 A EP88308730 A EP 88308730A EP 88308730 A EP88308730 A EP 88308730A EP 0309212 A2 EP0309212 A2 EP 0309212A2
Authority
EP
European Patent Office
Prior art keywords
wires
wire
ring
spike
radial
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.)
Withdrawn
Application number
EP88308730A
Other languages
German (de)
English (en)
Other versions
EP0309212A3 (fr
Inventor
Alistair Ian Mackay
Ann Mackay
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0309212A2 publication Critical patent/EP0309212A2/fr
Publication of EP0309212A3 publication Critical patent/EP0309212A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J3/00—Targets for arrows or darts, e.g. for sporting or amusement purposes
    • F41J3/0009—Dartboards
    • F41J3/0061—Target faces
    • F41J3/0066—Segmentation of conventional target faces

Definitions

  • This invention relates to dartboards and more specifically, to a method and apparatus for constructing the wire structure which overlies the playing surface of a dartboard.
  • the playing area of a conventional dartboard is circular with a small circle, known as the inner bullseye, being defined at the centre of the board and surrounded by an annulus, known as the outer bullseye or "25 ring".
  • the outer bullseye twenty identical segments radiate, with each segment being provided with a first transverse area, known as the "treble", approximately mid-way along the segment, and terminating in a second transverse area, known as the "double".
  • the "treble" and “double” areas of the twenty segments together form two annuli concentric with the centre of the playing area of the dartboard.
  • the segments are numbered from one to twenty, typically by fixing the appropriate numbers to a wire ring movably attached to the dartboard and surrounding the playing surface.
  • the numbers ring is movable so as to permit even wear and "recovery" of the dartboard as will be explained.
  • the inner and outer bullseyes and the twenty segments have been defined by wires so that it is readily discernible in which portion of the playing area a dart lands so as to be able to allocate the score to that "throw".
  • the "treble" and “double” annuli are each formed by two concentric rings each fashioned from a length of wire, and the size of the segments are defined by radially-extending wires which are disposed over the "treble” and “double” wires, terminating at one end beyond the periphery of the outer ring of the "double” annulus and terminating at the other end immediately inside the ring defining the outer bullseye.
  • each radial wire is formed, such as by turning over the ends of the wire, with a spike which is driven into the playing surface of the dartboard to secure the ends in position. It is necessary to secure the "double” and “treble” wire rings in position and this is normally achieved using wire staples placed over each radial wire, one immediately adjacent the inner “treble” ring, one immediately adjacent the outer “treble” ring, and one immediately adjacent the inner “double” ring, e staples being positioned outside the “treble” and “double” annuli, as appropriate, whereby the "treble” and “double” areas of each segment are cleanly defined by the radial wires and the "treble " and “double” wires, save for the "treble” areas of two adjacent segments and the "double” areas of the same or different adjacent segments inbetween which areas the ends of the "treble” an "double” wire rings abut each other. An extra staple is placed over the appropriate radial wire immediately adjacent the inner "treble” wire ring and another immediately adjacent the wire staple
  • the wires themselves present obstacles in addition to the staples but attempts have been made to overcome this aspect by making the wires of a cross-sectional shape such that they tend to deflect a dart into one area or another of the playing surface as opposed to the dart bouncing from the playing area.
  • the present applicants attempted to obviate the problem of the presence of staples and inner ends of radial wires presenting obstacles for darts by constructing the wire structure from a plurality of wires each profiled so as to define at least part of a radial segment of the playing area, at least part of the "treble" area at the playing area, and at least part of a “double” area at the playing area and each having securing means at at least at or towards each end, the wires being secured together to form an integral wire structure for application to the playing surface of a dart board.
  • a method of making a wire structure for defining the playing area of a dartboard comprising the steps of providing a series of concentric rings of wire positioned so as to define the "double” area, the “treble” area and the outer bullseye of the playing area, positioning twenty equiangularly spaced, radially-­extending wires over at least the "double” and “treble” concentric rings of wires, each radial wire extending from the outer bullseye ring to beyond the concentric ring of greatest diameter, each radial wire at that end being provided with a spike for engagement with a dartboard when the completed wire structure is applied thereto, and attaching the radial wires to the concentric circles of wires at each junction thereof by fusing.
  • fuse as used throughout this specification is intended to cover any form of connecting two metallic members together such as by welding, including spot welding, soldering, and by actual fusion by way of applying sufficient heat to the members so that each softens and fuses one to the other, such as by resistance welding.
  • the method may further comprise the step of providing a plurality, preferably four, of the radial wires with a spike at each end and arranging for those wires to engage beneath the outer bullseye ring in order to secure the latter to the dartboard when the wire structure is applied thereto.
  • the step of providing each of said plurality of radial wires with a second spike includes forming each of those wires with a stepped portion adjacent said second spike, each stepped portion receiving an adjacent portion of the outer bullseye ring.
  • each radial wire is formed with only one end spike and the other end terminates at, and overlies, the outer bullseye ring
  • the method comprising the further step of providing an arcuate member of the same radius as the outer bullseye ring and placing it beneath the latter so that it is fused to the outer bullseye ring during the fusing step, the arcuate member being provided with at least one spike for engagement with the dartboard when the wire structure is applied thereto.
  • the spike is provided at one end of the arcuate member and is formed by turning the latter through 90° as is each spike on the radial wires.
  • a spike may be formed at each end of the arcuate member.
  • the method may comprise the further step of providing two arcuate members to support substantially the whole of the outer bullseye ring.
  • the arcuate member may be formed virtually as a full circle to support the outer bullseye ring.
  • the method may comprise the further step of providing a circle of wire concentric with the other circles of wire and arranged to define the inner bullseye of the playing surface, with an arcuate member being provided beneath the bullseye ring and provided with a spike, the arcuate member serving to support the bullseye ring when fused thereto during the fusing step.
  • two arcuate members may be provided or one member formed virtually as a full circle. Again as before, each arcuate member may be provided with a spike at one or both ends.
  • a wire structure for a dartboard constructed in accordance with the foregoing method.
  • a jig for forming a wire structure for defining the playing area of a dartboard, the jig being provided with a series of concentric circular slots for receiving wires defining the "treble" playing area of the playing surface, the "double” playing area of the playing surface and the outer bullseye ring, the jig also comprising twenty equiangularly spaced and radially-extending slots to receive wires for defining the twenty segments.
  • the jig may also be provided with a further circular slot for receiving a wire defining the inner bullseye.
  • this illustrates part of a dartboard provided with a wire structure in accordance with the present invention
  • the wire structure comprising a first pair of concentric wire rings 1 and 2 defining the "double" area of the playing surface, a second pair of wire rings 3 and 4 defining the "treble" area of the playing surface, the second pair of wire rings 3 and 4 being concentric with the wire rings 1 and 2, and a wire ring 5 defining the outer bullseye of the playing surface, ring 5 also being concentric with rings 1, 2, 3 and 4.
  • the wire structure further comprises twenty (of which only some are shown) equiangularly spaced, radially-extending wires 6 which extend from the outer bullseye ring 5 to beyond the concentric ring of greatest diameter, namely ring 1.
  • each radial wire 6 is turned through 90° at its radially outer end in order to form a spike 7 for engaging the dartboard.
  • the spike is preferably of the order of 30mm long in order that it penetrates through the bristle which, on a quality dartboard, is provided for the playing surface, and into a backing for the bristle normally composesd of wood, fibreboard or the like.
  • the majority of the radial wires 6 terminate at the outer bullseye ring 5 as seen in the lower half of Figure 2.
  • a plurality, preferably four, of the radial wires 6′ are provided with a further spike 8 at the outer bullseye ring end and are futhermore formed with a stepped portion 9 at that end in order to receive the outer bullseye ring 5.
  • the four radial wires 6′ are generally equally spaced around the dartboard in order to provide fixation points for the outer bullseye ring 5 when the wire structure is applied to the dartboard.
  • the number of the radial wires 6′ employed can be varied as required and can be the totality of radial wires.
  • the spikes 8 may be formed separately and spot welded to the inner end of each radial wire 6 to be fitted therewith.
  • the ends of these wires may be bent generally at right angles so as to lie along part of the outer bullseye ring 5 and be attached to the underside thereof by spot welding, for example.
  • the wire structure comprising the components 1 to 6 described above is formed, in accordance with one aspect of the present invention, by placing the various wires in appropriate slots in a jig and then securing the wires together at the respective junctions thereof in order to provide an integral wire structure for application to the dartboard itself.
  • This step of connecting the wire components of the wire structure together can be accompanied by an actual fusion technique in which sufficient heat is applied to the wires in order to soften the same and fuse contacting wires together (for example by resistance welding), or may be accomplished by welding, spot welding or the like.
  • the wire structure is then applied to the dartboard and merely pressed into position, whereupon the spikes 7 and 8 engage the bristle playing surface and extend therethrough into the backing of the dartboard so as firmly to secure the wire structure in position.
  • FIG. 3 and 4 of the drawings illustrates an alternative embodiment of the present invention in which the concentric "double” and “treble” rings 1, 2; 3, 4 are employed as in the first embodiment, together with the radial wires 6 all of which terminate at the outer bullseye ring 5 which is again as in the first embodiment.
  • the latter is secured in this embodiment using at least one securing member in the form of an arcuate wire 11 of the same radius as the outer bullseye ring 5 and formed at each end with a spike 12.
  • the outer bullseye ring 5 is arranged to overlie the arcuate member 11, with the ends of the radial wires 6 in turn overlaying the outer bullseye ring 5.
  • This embodiment avoids the necessity of providing the slightly differently formed radial wires 6′ whereby a standard radial wire 6 can be employed throughout.
  • two of the arcuate wires 11 can be employed in order to support the outer bullseye ring 5 substantially all around its circumference.
  • a similar arcuate member 11 may be employed to support an inner bullseye ring 13 in a similar manner to the outer bullseye ring 5, thus providing a wire structure for a dartboard which is entirely devoid of any staples for securing that structure to the dartboard itself.
  • two arcuate wire members 11 may be used to support the inner bullseye ring 13. In both instances, a single arcuate member may be employed which is virtually a full circle.
  • Figure 4 of the drawings illustrates the arcuate member 11 in perspective view and Figure 5 illustrates the inner bullseye ring 13 supported by an arcuate member 11.
  • the wire used for entire wire structure is preferably of stainless steel and wire of 1/16" (l.5mm) diameter has been found particularly suitable.
  • the use of stainless steel wire permits welding and yet provides a corrosion free, stable structure which does not require to be subjected to annealing in order to remove brittleness which needs to be done if steel or other wire is employed.
  • the present invention provides a method and apparatus for forming a wire structure defining the playing area of a dartboard which either substantially eliminates, or entirely eliminates, the need for staples to secure that structure to the dartboard.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ropes Or Cables (AREA)
  • Medicines Containing Plant Substances (AREA)
EP88308730A 1987-09-23 1988-09-20 Cibles pour fléchettes Withdrawn EP0309212A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8722428A GB2209960A (en) 1987-09-23 1987-09-23 Dartboards
GB8722428 1987-09-23

Publications (2)

Publication Number Publication Date
EP0309212A2 true EP0309212A2 (fr) 1989-03-29
EP0309212A3 EP0309212A3 (fr) 1990-08-29

Family

ID=10624277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88308730A Withdrawn EP0309212A3 (fr) 1987-09-23 1988-09-20 Cibles pour fléchettes

Country Status (2)

Country Link
EP (1) EP0309212A3 (fr)
GB (1) GB2209960A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267226B (en) * 1992-05-28 1995-05-03 Opex Sports Limited Target boards

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB810213A (en) * 1955-12-08 1959-03-11 Thomas Salter Ltd Improvements relating to dart boards
GB2035104A (en) * 1978-11-24 1980-06-18 Nodor Co Ltd Improvements in or relating to dartboards and their method of construction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK451286A (da) * 1985-09-23 1987-03-24 Winmau Dartboard Ltd Dartskive

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB810213A (en) * 1955-12-08 1959-03-11 Thomas Salter Ltd Improvements relating to dart boards
GB2035104A (en) * 1978-11-24 1980-06-18 Nodor Co Ltd Improvements in or relating to dartboards and their method of construction

Also Published As

Publication number Publication date
EP0309212A3 (fr) 1990-08-29
GB2209960A (en) 1989-06-01
GB8722428D0 (en) 1987-10-28

Similar Documents

Publication Publication Date Title
US5100253A (en) Concealed rivet element and setting method for binder and the like
US6020559A (en) Flat flexible cable
US4811474A (en) Friction clutch
US5281770A (en) Printed circuit board apparatus
WO1998018520A3 (fr) Structures asymetriques de support d'electrodes multiples
EP0309212A2 (fr) Cibles pour fléchettes
CA2307158A1 (fr) Classeur cylindrique et son procede de fabrication
GB2231501A (en) Dartboards
SU1569452A1 (ru) Узел креплени ситовых элементов
JPH08230602A (ja) ホーンスイッチ付設エアバッグモジュールカバーとそのスイッチ付設方法
EP0336465A1 (fr) Patin de friction pour freins
AU602342B2 (en) Dartboards
EP0238597B1 (fr) Cible pour jeu de flechettes
GB2297700A (en) Dartboards
GB2252510A (en) Dartboards
EP0201224B1 (fr) Procédé de fabrication d'un commutateur
US2778047A (en) Staple strip rotary brush and method of making
US1990025A (en) Brush
GB2035104A (en) Improvements in or relating to dartboards and their method of construction
CA1116197A (fr) Cible a flechettes
CA1116198A (fr) Cible de flechettes
GB2084473A (en) Dartboards
US2996598A (en) Support structure for surface heating units
GB2352405A (en) Outer bullseye for dartboard
WO1992000685A1 (fr) Methode d'assemblage d'une chaîne et chaîne obtenue par cette methode

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19901002