A product of Ransomes, Sims & Jefferies this was a sidewheel mower made in the late 1930s. This was advertised as an "easy running machine for small lawns. cutting cylinder welded to ensure long service". It had ball bearings, of smaller size than in the more expensive Leo, and was really an updated version of the 'Cub', which had pain bearings. Made in three sizes it sold from 41/3d in 1939. The "Ace" was also available as a bank mower with a 75 inch pole handle. In the 1950s, after the alloy-framed 'Lioness', as ferrous metal supplies became less restricted, the Ace re-appeared as Ace Mark 2, with tubular steel handles similar to those on the 'Ripper'.