It's a home made wheel carrier (better than using a spanner) for attaching wheels to the front axle........... and taking your sprint / tubs to the race.
I've got 2 pairs of Cliff Peters and one pair of Cyclo. When I was a lad it was 'de rigeur' to ride out to events at silly o'clock of a Sunday morning with your 'best sprints' hanging on your front wheel. And then go off on a clubrun afterwards.
Yep, I used cone spanners a couple of times but they always slipped down as the quick release couldn't grip them hard enough. I once took a chunk out of a brand new wheel carrying it like that . :cry: