Rudge Whitworth also made a cantilever brake in the thirties on which the outer Bowden cable pushed the brake on rather than the inner pulling. I do not know how well it worked. There is an example in the reserve collection of the Science Museum at Wroughton. There seemed to be a lot of clever ideas around at that time but, with the exception of Resilion and of course the much later Mafac, they did not survive so one has to wonder if they were any good. The Rudge ones at least made it on to their catalogued bikes in the late thirties including the lovely lightweights. I believe those were Lauterwasser productions and I would dearly love one. Stuart Tallack in Sussex by the sea.