The original cassette hub?

[breakwellmz]

Four speed, for 1/8th chain, BSA.

[Brucey]

nice. Are the sprockets the same spline as the SA ones that were used at one time by any chance?

You can tell why it most likely survived too; it has a grease nipple!

cheers

[531colin]

Trivelox? http://www.disraeligears.co.uk/Site/TriVelox_derailleurs.html

[NetworkMan]

That's nice, why weren't they all like that? Patents perhaps. It would surely have saved some broken axles.

[531colin]

Doesn't seem to be Bayliss Wiley...? http://pardo.net/bike/pic/fail-024/000.html

[breakwellmz]

It`s not mine i`m afraid, i saw it on fleabay.-

http://www.ebay.co.uk/itm/111467839299? ... EBIDX%3AIT

[Valbrona]

Yes, very nice. If someone had asked me what the first cassette hub was I would have said Shimano 600 or thereabouts. And that's what you call a grease nipple.

[fastpedaller]

Wow - that's indeed an interesting item. Viewed from a distance I would have said Shimano! I wonder if that's where they (Shim) got the idea?

[Pandaz]

Didn't Cinelli have a cassette hub in the late 40's, the Bivalent?

Selbach patented a similar system in 1932, but not as elegant as the Italians!

[Pandaz]

Yours is the BSA IGH hub, a patent later taken up by Sturmey Archer.

Circa 1954