These images are taken from photographs supplied by owners. I have not credited the owners to preserve their anonymity and also because I know several of these frames have subsequently changed hands.
The standard pattern of Carlton lugs, used for many years. The design varied slightly and could be feathered, as on the left example on the image.The Flyer. The early style of Flyer lugs, used from 1939 into the mid 50’s.The International model was another model with very elaborate lugs. It was made from 1939 to 1959 and again in 1963-4.The Jewel was an elegant model produced in the 50’s. This example shows the later elaborate style of Jewel lugs.The Coureur was made for a few years in the 1950’sThe International Clubman. These lugs were used on the Massed Start models in the early 50’s and the International Clubman later in the 50’sThe Lindrick lugs were introduced in 1954 for the Continental models. Note how the lug is outlined on the top edge on the seat tube lug example. The lugs are named for Carlton-in-Lindrick where the marque originated.The Flyer with the Curley lugs introduced in 1957.The Capella lugs were introduced in 1958 and lasted until 1966. Used on many models and available as an option on the Flyer. Late models had wrapover seat stays. The length of the Capella lugs caused a problem on short headstocks, where there was not enough gap between the points to fit a badge.Two curious solutions can be seen here.The Crespera lugs. Introduced in 1967 and used until 1974 on many models. The Via Crespera is (or rather was) a steep, cobbled hill near Lugano in Switzerland that formed part of the 1953 (and some years subsequent) World Road Race circuit
