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Publication of GB819999ApublicationCriticalpatent/GB819999A/en
819,999. Variable-speed gearing. MOTOR INDUSTRY RESEARCH ASSOCIATION. Oct. 9, 1957, No. 31512/57. Addition to 766,659. Class 80 (2). In the variable ratio hydraulic transmission of the parent Specification, the rotors of the two hydraulic units 10, 11 are mounted coaxially with respect to the input 1 and output 6 shafts and are rotatable in casings 20 slidable in a direction perpendicular to the axis of the shafts to vary the eccentricity of the two rotors. The two casings are connected together and moved by a single control lever 22.