of roll 14 is partially immersed in the body of liquid 6 in container 22 first container 22 is comprised of a front wall 24 having an upper edge 25 extending along the length of roll 14 a bottom wall 27 sidewalls 29 and a rear wall 31 suitably joined together to form a reservoir for holding liquid 6 first container 22 also includes a vertically oriented liquid flow control channel means 33 comprising a plate 34 attached to rear wall 31 and a pair of bars projecting laterally beyond the exterior surface of plate 34 to form the channel channel means 33 is oriented such that the upper lip 36 thereof is positioned in a horizontal plane below the upper edge 25 of front wall 24 as shown in fig1 a pair of channel means 33 are located at the rear wall 31 in operation as an excess of liquid 6 is supplied to first container 22 at liquid inlet port 38 located in one of the sidewalls 29 the excess liquid flows over the upper lip 36 of channel means 33 and downwardly into settling zone 72 of second container 50 second container 50 is adapted to slideably receive first container 22 and to capture the excess liquid from first container 22 and any spray thrown from the filaments or the like deposited on the front wall 24 of first container 22 second container 50 is mounted within housing 12 by positioning means 80 second container 50 is comprised of a front portion 52 extending outwardly or forwardly from bottom portion 55 joined thereto second container.