Abstract: A temperature-sensitive actuator particularly for varying the pitch of blades spaced around a cooling fan hub. The actuator, as applied to a fan, includes at least first and second circular or part-circular elongate members within the hub, restraining means on the hub for one end of the first elongate member, support means for the first elongate member having a coefficient of expansion different from that of the first elongate member, and which inhibits radial deformation of the first elongate member during thermal expansion or contraction whereby the free end of the first elongate member moves circumferentially, means for transmitting movement of the first elongate member to the second elongate member, and further means between the second elongate member and the blades to vary the pitch of the blades in response to the combined thermal expansion or contraction of the elongate members.

Abstract: A shock absorbing apparatus suitable for use on a load carrying vehicle at the rear and/or front thereof comprises an arm pivotable to the frame or chassis of the vehicle close to the end thereof and extending downwardly to support on its lower end a horizontally disposed bumper bar extending across the vehicle, a shock absorbing device pivoted to the arm between said pivot and the bar and pivoted to the vehicle frame or chassis at a point spaced along the vehicle from said arm pivot, said three pivots forming the three apices of a triangle, lost motion means associated with at least one of said pivots to vary the configuration of said triangle to permit the arm to swing upwardly away from the vehicle frame or chassis to clear ground height variations in the path of the bar, and means to restore the arm to its normal position when the bar is clear of such ground variations.

Abstract: A clutch release bearing assembly comprising a clutch release bearing having inner and outer races with rolling elements therebetween, the inner race being carried on a bearing carrier which is slidably mounted on a drive element of the clutch and is engaged by a clutch control member whereby a clutch disengaging force is applied to the inner race and transmitted therefrom by the rolling elements, to the outer race and hence to the clutch mechanism the bearing carrier including a metal insert and a synthetic plastics part, the metal insert comprising a tubular portion and a flange portion, the tubular portion having on its external surface a seat portion which is adapted to engage and retain the inner race of the bearing and the bore of the tubular portion being adapted to surround a drive element of the clutch, the flange portion being adapted to provide a transverse abutment surface for engagement by the clutch operating means, the plastics part being moulded onto the insert so that relative movement betwee