Honeycomb roll assembly for treating paper with felts

Claim 2

In a felt dryer roll assembly for removing moisture from a felt web in a paper making machine, said assembly being of the type having: a stationary fluid pressure pipe with perforations spaced axially therealong, said pipe having an inner face and an outer face; a cylindrical sleeve of honeycomb openwork rotatably mounted on the outer face of said pipe to support said web, and means for supplying hot fluid under pressure to said pressure pipe; the combination of a plurality of axially extending, spaced apart shoes, each of arcuate cross section and mounted to move axially within said pipe in sliding contact with the inner face of said pressure pipe, each said shoe having perforations adapted to register with the perforations in said pressure pipe; means within said pipe slidably supporting each said shoe for said axial movement, and control means, extending outside of said pressure pipe, selectively engageable and disengageable with each said shoe within said pipe for axially moving said shoes to adjust the quantity of hot, pressurized fluid flow through said perforations.

Claim 3

A felt dryer roll assembly as specified in claim 1, wherein: said support means comprises axially extending track means for guiding the same within said pipe.

Claim 4

A felt dryer roll assembly as specified in claim 1, wherein said assembly includes a plurality of said shoes, each axially spaced a predetermined distance from the other and said control means includes a single, slidable, control rod, having a plurality of pins spaced therealong and normal thereto each for axially moving one of said shoes, when at one of a plurality of angular positions.

Claim 5

A felt dryer roll assembly as specified in claim 1, wherein: the perforations in said pipe and shoes are in two parallel rows, with the perforations in one row staggered and located opposite the spaces between the perforations in the other row, and each said shoe includes tongues and grooves at each opposite end, for conforming to the staggered arrangement of said perforations.

Claim 6

A felt treatment roll assembly adapted to fit in a pocket formed by the felt of a paper making machine, said assembly comprising: a stationary fluid pressure pipe mounted transversely of said machine in a pocket formed by said felt, said pipe having perforations spaced axially and circumferentially thereon, in a pattern of predetermined angular width; a honeycomb roll rotatably mounted on said pipe, to support said felt in said pocket while permitting fluid to freely pass between said perforations and the exterior face of said felt; a plurality of individual valve means within said pipe, mounted end to end with a slight endwise clearance therebetween, each valve means defining one of a plurality of zones along said roll and including a partly cylindrical valve plug, having perforations in registration with the perforations on said pipe, axially extending track means supporting each said valve plug, and a single control rod extending axially from one end of said pipe to the other end thereof, said pipe having a plurality of pins normal thereto for individually moving said plugs axially according to a desired flow profile.

Claim 7

A felt treatment roll assembly adapted to fit in a pocket formed by the felt of a paper making machine, said assembly comprising: a stationary fluid pressure pipe mounted transversely of said machine in a pocket formed by said felt, said pipe having perforations spaced axially and circumferentially thereon, in a pattern of predetermined angular width; a honeycomb roll rotatably mounted on said pipe, to support said felt in said pocket while permitting fluid to freely pass between said perforations and the exterior face of said felt; a plurality of individual valve means within said pipe, mounted end to end with a slight endwise clearance therebetween, each valve means defining one of a plurality of zones along said roll and including a partly cylindrical valve plug, having perforations in registration with the perforations on said pipe, axially extending track means supporting each said valve plug, and a single control rod extending axially from one end of said pipe to the other end thereof, said pipe having a plurality of pins normal thereto for individually moving said plugs axially according to a desired flow profile.