Beltramo

Lino Beltramo (born 1898) pioneered “filet brazed” frames (constructed without lugs), by utilising low temperature brazing techniques. He worked in a cycle shop from a young age, rode competitively to a high standard and set up his own workshop in 1915. Then after serving in the 1st World War he returned and moved his shop to 81 Via Lessona in Turin, selling cycles under his own name, that were both distinctive for their lug-less frames and their metallic azure blue paint. There was an association between Beltramo and French cycle manufacturer and very successful racing team Alcyon (who also produced lug-less frames.) However quite who influenced who, and how closely they were involved is unclear.

Beltramo equipped many of the top riders in the Turin area in the 1920s and ’30s, but his refusal to join the fascist party come the 2nd World War, saw him have to close his workshops for its duration, transferring his business to within a department of the car manufacturer Cisitalia. He returned after the war, continuing in his craft well into the 1960s.

https://www.ellisbriggscycles.co.uk/beltramo-dolza-overview-and-history/