These are one version of the Wedgelock cranks made in Horsham, W Sussex around 1960-2. The earlier version of Wedgelock cranks were aluminium with steel axles - I will try to take some photos of the ones I have as well as some original literature I have. They were nothing to do with the GB company. They were made in very small numbers.
Hilary Stone, in muggy Bristol, England
> Anyone know these cranks? Made with a piece of fairly thick wall ovalized
> tubing, brazed at the ends to machined pieces for the pedal thread and the
> piece that attaches to the cottered axle.
>
> http://bulgier.net/
> http://bulgier.net/
>
> I got 'em from Martin Coopland who thought they were GB wedge lock cranks,
> from the late 50s or early 60s, but he wasn't sure.
>
> I don't know what they thought they were accomplishing with that odd cotter
> design other than making the crank and cotter harder to make, and not
> interchangeable with standard parts - can anyone think of any advantage to
> that, other than cool looking? (Works for me!) Differentiates their
> product I guess, but I'd better be very careful not to bung up those
> cotters.
>
> I'd especially like to hear if they have a reputation as death cranks, 'cuz
> I think I'd like to put these on a bike to ride.
>
> Mark Bulgier
> Seattle, Wa
> USA