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A buckle includes a buckle body with spaced apart wall and a pivot bar extending between the side walls and a handle with a cam member and a pair of support slots. The support slots receive the pivot bar to engage the handle with the body such that the handle can pivot between an open position, in w

A buckle includes a buckle body with spaced apart wall and a pivot bar extending between the side walls and a handle with a cam member and a pair of support slots. The support slots receive the pivot bar to engage the handle with the body such that the handle can pivot between an open position, in which a strap may be threaded upon the handle, and a closed position, in which tension is applied to the strap threaded upon the handle. The engagement between the support slots and the pivot bar permits the handle to slide relative to the buckle body.

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1. A buckle comprising a buckle body with spaced apart side walls and a pivot bar extending between the side walls, and a handle with a cam member and a pair of longitudinal support slots, the handle being mounted on the buckle body with the pivot bar received in the longitudinal support slots, the

1. A buckle comprising a buckle body with spaced apart side walls and a pivot bar extending between the side walls, and a handle with a cam member and a pair of longitudinal support slots, the handle being mounted on the buckle body with the pivot bar received in the longitudinal support slots, the handle being pivotable about the pivot bar between an open position, in which a strap may be threaded upon the handle, and a closed position, in which tension is applied to the strap threaded upon the handle, wherein the engagement between the longitudinal support slots and the pivot bar additionally permits the handle to slide longitudinally relative to the buckle body. 2. A buckle according to claim 1, wherein when the handle is in the closed position it can slide from a first position, in which the cam member is spaced from the pivot bar, to a second position, in which it is adjacent to the pivot bar. 3. A buckle according to claim 2, wherein when the handle is in the second position, the strap threaded upon the buckle is trapped between the cam member and the pivot bar. 4. A buckle according to claim 2 or claim 3, wherein the handle is provided with a resilient biasing member which biases it into the first position. 5. A buckle according to claim 1, wherein the handle is provided with a locking member which is capable of engaging with the buckle body to secure the handle into the closed position. 6. A buckle according to claim 5, wherein a resilient biasing member biases the locking member into the closed position. 7. A buckle according to claim 1, wherein the buckle further comprises strap trapping means arranged such that when the handle is in the closed position the strap trapping means defines a channel for the strap threaded upon the handle. 8. A buckle according to claim 7, wherein the buckle comprises more than one strap trapping means. 9. A buckle according to claim 7, wherein, when the handle is in the closed position, the strap trapping means defines a channel for the strap which is the same width as, or slightly wider than, the thickness of the strap passing through the channel. 10. A buckle according to claim 7, wherein, when the handle is in the closed position, the strap trapping means defines a channel for the strap which compresses the strap passing through the channel. 11. A buckle according to claim 7, wherein the strap trapping means comprises a strap trapping member which is associated with the cam member, such that when the handle is moved from the open position to the closed position the cam member moves into close proximity with the strap trapping member. 12. A buckle according to claim 11, wherein the strap trapping member comprises a plate. 13. A buckle according to claim 12, wherein the plate extends upwardly from the base of the buckle. 14. A buckle according to claim 12, wherein the plate is perpendicular to the side walls. 15. A buckle according to claim 13, wherein the plate is angled towards the cam member. 16. A buckle according to claim 11, wherein the strap trapping member comprises a curved surface which opposes the cam member when the handle is in the closed position. 17. A buckle according to claim 16, wherein the strap trapping member is associated with an aperture in the rear of the buckle, such that a length of webbing may pass through the aperture and loop around the curved surface to attach it to the buckle. 18. A buckle according to claim 7, wherein the strap trapping means comprises mating members, a first member being provided on the handle and a second member being provided on the buckle body, the arrangement being such that when the handle is moved from the open position to the closed position the mating members come together to define the channel.