a hinge including first and second hinge members movable between an open position and a closed position , the first hinge member including a substantially cylindrical body portion having a longitudinal axis about which the second hinge member is rotatable to move the hinge between the open position and the closed position ; the body portion housing biasing means having an end fixed relative to the second hinge member , the biasing means being in engagement with an adjustment member , the adjustment member being fixed with respect to the first hinge member ; wherein the adjustment member includes a ratchet means to move the adjustment member in a first direction to increase the tension in the biasing means .