English: None of the early Brewery locomotives being entirely satisfactory, the Guinness Engineering Director, Mr Geoghegan, set about designing a locomotive possessing all their best features but without their handicaps. The result was an 0−4−0 side tank engine with horizontally mounted cylinders situated above the marine-type boiler driving through a dummy crankshaft and vertical connecting rods, which in turn drove the wheels. Instead of the cylinders being bolted to the boiler, they were fixed to the frames which were carried the full height of the locomotive above the top of the boiler. The side tanks were also attached to the frames. Another novel feature was the independent spring frame which consisted of eight steel leaves in pairs, two pairs on each side of the locomotive and one pair each above and below the axleboxes. It was attached to the front and back stays, so that by removing the pins and connecting rods, and with the locomotive lifted, the spring frame could be wheeled out from beneath the locomotive to receive attention and maintenance. The general layout of these engines was one of accessibility for repair but with maximum protection from dirt.