Making wine

[D B Campbell]

You've intrigued me, now.

..., and another hunted for a dry stick smoothed by blows so that the must of the grapes could be carried out at night under the lead of a lantern

I think your translation is faulty (or extremely archaic). The new-ish Oxford World's Classics version reads:

... a sixth was making a bundle of dry withies, which had been pounded and shredded for use as torches, so that there would be light for conveying the grape-juice after dark.

The phrase literally reads "another [was looking for] a dry withy which had been shredded and pounded, so that, by night, the grape-juice would be carried in the light".

The torch (or lamp) seems to be understood.