Percolating Hose 2 : A hose made of a porous fabric such as linen which usually leaks when first charged with water but later becomes watertight as the fibers swell
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}