This is an antique grape press. All over the winemaking areas of the Northern Hemisphere, grapes are being harvested and crushed for their precious juice. The old image of winemakers stomping on grapes with their bare feet still holds in some places, although it's mostly done for fun. Most vineyards have modern crushers which gently extract the juice in a cylindrical metal pressure vessel. This wooden barrel type is still being made and used, though. I found the antique and no longer active press at Willowcroft Winery in Loudoun County.
Technical pen ink on Bristol board, 3" x 6", September 18, 2013.