Originally Posted by
JohnDThompson
I seem to recall that the Raleigh catalogs described it as "Brampton-Victor" style, but don't know how they came up with that.
Yeah, briefly in the early '70s. In the '60s, the Professional (at least as sold in the US) had seatstays attached to the side of the lug. Then they used this for a few years:

Note the extended spoon on the back of the lug to reinforce the ST for the SS attach.
I love how the '75 catalog says the added rigidity from this is "a necessity for top competition", while their top model the Team Pro, had side-attached stays. What a load of "marketing".
Sorry, I know this isn't the C&V forum, I'm just C&V myself.