Rotary inertia device and fluid braking system

812,553. Brake control mechanism. DUNLOP RUBBER CO. Ltd. July 11, 1956 [July 28, 1955], No. 21765/55. Class 103 (1). In order to ensure a correct amount of frictional interference between the peripheral tyre of the rotatable housing of a rotary inertia device for anti-skid control and a wheel or like rotatable member, spring means are provided to urge the housing of the rotary inertia device against the wheel or like with a force which is substantially constant to automatically compensate for wear of the housing tyre. In the embodiment illustrated applied to an aircraft wheel, the casing 10 of the rotary inertia device (e.g. of the type disclosed in Specification 676,708) is pivotally secured to the non-rotatable torque plate 2 of an aircraft disc brake. The rotatable housing 6 of the rotary inertia device 1 has a peripheral solid rubber tyre 7 and is adapted to engage, and be rotated by, the rim 8 of the aircraft wheel 9. A pivotal connection is provided at ends 14 and 15 of the casing 10; the latter end being spring-loaded by arrangement 34 so that the tyre of the rotatable housing 6 is constantly resiliently urged to bring the tyre 7 into frictional contact with the rim 8 of the aircraft wheel. If desired, both ends 14 and 15 of the casing 10 may be provided with spring-loaded pivotal connections with the non-rotatable torque plate 2. The device is preferably so located on the torque plate 2 that the spring-urged end 15 of the base 11 is radially closer to the centre of the wheel than the pivoted end 14; thus eliminating any tendency of the tyre 7 to jam on the rim 8.