GB2180461A - Darts - Google Patents

Abstract

A dart comprises a threaded barrel 1, a nose cap 2 threaded into the barrel, and a point 3 extending with a clearance fit through the nose cap and having a pointed bearing bush 4 rotatably retained between the cap and barrel whereby, when the dart is secured in a dartboard, any striking or buffeting following dart will tend to revolve the screwed dart about its point to permit improved dart grouping. <IMAGE>

Description

SPECIFICATION Rota-Dart This invention relates to improvements in or relating to playing darts.

In particular, the invention concerns the kind of dart which comprises an elongate metal barrel which has an axial screw threaded bore extending into the barrel at both ends, one end is for receiving an externally screw-threaded end portion of a shaft provided at its other end with a fixed flight or means for attaching a detachable flight, the other end is for receiving an externally screw-threaded nose portion which allows a point to be captured between the barrel portion and the nose portion allowing enough clearance to allow the point to rotate.

Accordingly the present invention comprising an elongate metal barrel, a point and a nose cap, in order that the invention may be readily understood an embodiment thereof will now be described, by way of example with reference to the accompanying drawings in which.

Figure 1 is an enlarged view of the point.

Figure 2 is an enlarged side view of a dart embodying the invention, showing the barrel, barrel nose cap, point and shaft assembled.

Figure 3 enlarged view of the barrel portion.

Figures 4, 5 and 6 show enlarged views of different shaped nose caps.

Referring to the drawings, a dart embodying the invention comprises an elongate metal barrel (1) having a nose cap (2) which has a point (3) fitting into its centre allowing the shoulder (4) of the point to butt up against the rear of the nose cap (2). The nose cap (2) is screwed into the barrel and locked by a washer (5), with the washer (5) clamped there is enough clearance between the point end (6) and the bottom of the internal thread hole (7) to allow the point (3) to rotate. The barrel portion (1) which is generally cylindrical is provided with circumferential grooves (8), the shaft (9) is formed with axially extended cross slits (10) which divide the rear end portion of the shaft into four resiliently separable fingers (11) for receiving and gripping a detachable flight (not shown) in known manner.If the washer (5) is removed and the nose cap (2) is secured the point will be clamped rigid.

The barrel (1) and nose cap (2) may be made of any suitable metal, such as Brass or a tungsten alloy. The shaft (9) may be made of any suitable material, for example a light metal alloy or plastics.

The flight which is attached to the shaft may be made of a suitable light but stout material such as paper or plastic sheet of suitable quality.

The barrel and nose will be manufactured in different diameters and lengths.

CLAIM

A dart comprised of 3 parts an externally screwthreaded nose cap portion a barrel which has an axial screw threaded bore extended into the barrel at both ends and a point which has a shoulder collar at the rear end, the point fits through the centre of the nose cap which screws in one end of the barrel and is secured by a locking washer when this is clamped together there is enough play between the nose thread and rear point and collar housing to allow the barrel to rotate if the point is held, thus when the first dart is secured in the dartboard any following dart that may strike or buffet against its preceding darts rear flight will revolve the preceding dart allowing the following dart to continue in its path, this will eliminate a high percentage of deflection so improving the accuracy of the darts and allows for much better dart grouping. A dart substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings any novel feature or combination of features herein disclosed.

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

Claims (1)

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

   SPECIFICATION Rota-Dart This invention relates to improvements in or relating to playing darts.

   In particular, the invention concerns the kind of dart which comprises an elongate metal barrel which has an axial screw threaded bore extending into the barrel at both ends, one end is for receiving an externally screw-threaded end portion of a shaft provided at its other end with a fixed flight or means for attaching a detachable flight, the other end is for receiving an externally screw-threaded nose portion which allows a point to be captured between the barrel portion and the nose portion allowing enough clearance to allow the point to rotate.

   Accordingly the present invention comprising an elongate metal barrel, a point and a nose cap, in order that the invention may be readily understood an embodiment thereof will now be described, by way of example with reference to the accompanying drawings in which.

   Figure 1 is an enlarged view of the point.

   Figure 2 is an enlarged side view of a dart embodying the invention, showing the barrel, barrel nose cap, point and shaft assembled.

   Figure 3 enlarged view of the barrel portion.

   Figures 4, 5 and 6 show enlarged views of different shaped nose caps.

   Referring to the drawings, a dart embodying the invention comprises an elongate metal barrel (1) having a nose cap (2) which has a point (3) fitting into its centre allowing the shoulder (4) of the point to butt up against the rear of the nose cap (2). The nose cap (2) is screwed into the barrel and locked by a washer (5), with the washer (5) clamped there is enough clearance between the point end (6) and the bottom of the internal thread hole (7) to allow the point (3) to rotate. The barrel portion (1) which is generally cylindrical is provided with circumferential grooves (8), the shaft (9) is formed with axially extended cross slits (10) which divide the rear end portion of the shaft into four resiliently separable fingers (11) for receiving and gripping a detachable flight (not shown) in known manner.If the washer (5) is removed and the nose cap (2) is secured the point will be clamped rigid.

   The barrel (1) and nose cap (2) may be made of any suitable metal, such as Brass or a tungsten alloy. The shaft (9) may be made of any suitable material, for example a light metal alloy or plastics.

   The flight which is attached to the shaft may be made of a suitable light but stout material such as paper or plastic sheet of suitable quality.

   The barrel and nose will be manufactured in different diameters and lengths.

   CLAIM

   A dart comprised of 3 parts an externally screwthreaded nose cap portion a barrel which has an axial screw threaded bore extended into the barrel at both ends and a point which has a shoulder collar at the rear end, the point fits through the centre of the nose cap which screws in one end of the barrel and is secured by a locking washer when this is clamped together there is enough play between the nose thread and rear point and collar housing to allow the barrel to rotate if the point is held, thus when the first dart is secured in the dartboard any following dart that may strike or buffet against its preceding darts rear flight will revolve the preceding dart allowing the following dart to continue in its path, this will eliminate a high percentage of deflection so improving the accuracy of the darts and allows for much better dart grouping. A dart substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings any novel feature or combination of features herein disclosed.