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A range of gear-driven roller mowers made by the London firm of J.B. Brown in the 1860s. These were available in sizes ranging from 10 to 42 inches (the larger sizes being for 2-man or horse operation) with prices in 1867 ranging from £3.10.0d for the very smallest machine to £28.10.0d for the largest. It is significant that in 1869 the machine was advertised as being "perfected" which might imply that the earlier machines were less than successful.