Today in 1870, US Patent 110232 A was issued, an invention of Thomas Hanvey, for his “Improvement in Barrels.” There’s no Abstract, although in the description it includes this summary:

The invention relates to straight barrels, of two or more thicknesses, one overlying another, and consists in putting lengthwise on the outside of such barrels hoops or clamps, secured by screws, said screws also forming the rests for the heads. It also consists in the formation of the heads of two thicknesses, with the grain crossing, as hereinafter described General Description.