500054-A is referenced by 2 patents.
500,054. Epicyclic reversing-gearing. WILSON, A. G. Aug. 9. 1937, No. 21859. [Class 80 (ii)] A driving shaft a, having fast thereon a sunwheel b of a first train and an annulus x of a second, imparts a reduced reverse drive to an annulus u, fast to a driven shaft k, utilizing only the first train, when a brake 13 is applied to the common planet carrier 12 of both trains, and provides a reduced forward drive, with both trains taking part in a compound manner, when a brake 10 is applied to the loose sun-wheel y of the second train. The Provisional Specification states also that further ratios may be provided by adding other trains which drive the sun-wheel y either backwards or forwards.