Description
"The "pistol pipe" stove, still largely used, chiefly differs from this in having the limbs of the U tube closely adjacent, so as to consist in fact of a single tube with the partition D in the center, the cold air passing up one side of the partition and down the other so as to become heated in passing; to accommodate the pipe to an arched roof, the upper end is bent inwards, thus giving the form of a pistol stock and barrel to the double pipe, two ranks of pipes facing one another being built in the same stove." — The Encyclopedia Britannica, 1893
