Liquid-treating of filamentary materials

Claim 3

A method as defined in claim 1, wherein the step of pressing is carried

Claim 4

A method as defined in claim 1, wherein the step of pressing is carried out until a predetermined upper level of differential pressure is reached between said chambers; and the step of forcing is carried out until a predetermined lower level of differential pressure is reached between said

Claim 5

A method as defined in claim 1, wherein the steps of admitting and pressing are carried out repeatedly before the step of forcing is carried

Claim 6

A method as defined in claim 1, wherein the steps of admitting and pressing are each carried out at least once in each one of said chambers.

Claim 7

Apparatus for liquid-treating filamentary materials, such as threads, yarn and textiles, comprising a treating vessel; first means for supporting within said vessel a package of filamentary material which is hollow and subdivides the interior of said vessel into an inner and an outer chamber which communicate only through the thickness of the filamentary material; second means for admitting a foamable treating liquid in unfoamed state into only one of said chambers; third means for pressing an amount of said liquid from said one chamber into the filamentary material of said package sufficient to wet the filamentary material and for preventing substantially any of said pressed liquid from entering the other chamber; fourth means for thereupon discharging residual, unfoamed liquid from said one chamber; and fifth means for forcing a pressurized gaseous fluid through said package from one to the other of said chambers to foam the liquid within the filamentary material

Claim 8

Apparatus for liquid-treating filamentary materials, such as threads, yarn and textiles, comprising a treating vessel; first means for supporting within said vessel a package of filamentary material which is hollow and subdivides the interior of said vessel into an inner and an outer chamber which communicate only through the thickness of the filamentary material; second means for admitting a foamable treating liquid in unfoamed state into only one of said chambers; third means for pressing an amount of said liquid from said one chamber into the filamentary material of said package sufficient to wet the filamentary material and for preventing substantially any of said pressed liquid from entering the other chamber; fourth means for thereupon discharging residual, unfoamed liquid from said one chamber; and fifth means for forcing a pressurized gaseous fluid through said package from one to the other of said chambers to foam the liquid within the filamentary material

Claim 9

Apparatus as defined in claim 6; and further comprising means for

Claim 10

Apparatus as defined in claim 6; further comprising holding means in said vessel for holding said first means in a predetermined position

Claim 11

Apparatus as defined in claim 8, wherein said first means is a package

Claim 12

Apparatus as defined in claim 6; further comprising two pairs of fluid lines communicating with said vessel and with sources of said liquid and of compressed air; and valve means in said fluid lines for selectively

Claim 13

Apparatus as defined in claim 10; and further comprising a pressure

Claim 14

Apparatus as defined in claim 6, wherein said vessel is a drum, and a hollow rotatable shaft extends axially into said drum and carries mounting means for said first means at a radial distance from the axis of rotation of said hollow shaft; a pair of first fluid lines each communicating with the interior of said drum and with a source of said liquid and of compressed air, respectively; a valve in the fliud line communicating with said source of said liquid and controlled by the liquid level in said drum; a fluid line communicating with said inner chamber and adapted for selective communication with both of said sources; and a motor for

Claim 15

Apparatus as defined in claim 12, comprising a further drum adjacent the first-mentioned drum, said shaft extending through said further drum; fluid lines connecting said further drum with said sources, a valve responsive to the fluid level in said further drum being interposed in the

Claim 16

Apparatus as defined in claim 13, wherein said valves are adjustable in

Claim 17

Apparatus as defined in claim 12; and further comprising a change-speed gear interposed between said motor and said hollow shaft to regulate the speed of rotation of the latter.