> [They became a standard Taylors' fitting until the advent of ball bearings, > in and after 1913. I don't recall having seen any (Heywood lubricators that > is) pre-dating 1896. Taylors were still using them in the 1950s if asked > (e.g. St Leonard Bridgnorth). C D] Why were they supplying plain bearings in 1950? David