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US 5,490,458 AGranted
Printing press cylinder assembly
AssigneeBryce Corporation
InventorWarner H. Stuart
Life of this patent
Estimating the term…
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AssigneeBryce Corporation
InventorWarner H. Stuart
Estimating the term…
A printing cylinder assembly comprises a cylinder shell with opposite open ends. Cylinder heads are received into the opposite open ends of the shell and include stub axle shafts which project outwardly in opposite directions. The shell open ends are reinforced by collet rings having an internally tapered collet face matched to receive a correspondingly tapered face on the cylinder heads. The opposite axle shafts are both bored coaxially to receive an end-to-end drawbolt. Internally, the cylinder heads have a sleeved socket to receive one end of respective graphite fiber tubes. At opposite ends, the graphite tubes are terminated into respective pin and socket joints. In assembly, the cylinder heads are faced to the sleeve collets with the graphite tube pin and socket joints meshed. The drawbolt is inserted along the axis length of the assembly and drawn tight by washer-nut fasteners.
A rotary printing cylinder assembly which comprises a hollow, elongate open-ended cylindrical shell having a center length axis extending along its length, cylinder heads disposed adjacent each of said open ends of said cylindrical shell, an elongate stub axle projecting outwardly from each cylinder head substantially co-axially of said center length axis of said cylindrical shell, said shell having conical bearing surfaces on its open ends which mate with conical bearing surfaces on said cylinder heads to provide a conical bearing surface interface between said cylinder heads and said shell to limit entry of said cylinder heads into said shell and to maintain said stub axles in said co-axial relationship with respect to said center length axis of said cylindrical shell, elongate alignment tubes projecting inwardly from each cylinder head and into said cylinder shell substantially co-axially with said center length axis of said cylindrical shell, connection means for connecting said alignment tubes together so as to enable relative longitudinal movement therebetween while restricting off-axis movement of said alignment tubes with respect to one another and said length axis, and engagement means for urging said cylinder heads inwardly against said cylinder shell so that said cylinder shell is axially compressed between said cylinder heads to provide said conical bearing surface interface, said connection means and said conical bearing surface interface cooperating when said shell is engaged between said cylinder heads to restrict off-axis movement of said alignment tubes and their associated cylinder heads and stub axles with respect to each other and said center axis.
A rotary printing cylinder assembly comprising shell means having opposite ends thereof, said shell means being secured about an elongated cylinder axis passing substantially normally through the center of substantially circular collet rings secured to said opposite ends of said shell means parallel with circular end planes respective said shell means, said collet rings having respective conical support faces, stub axle means including cylinder head plugs for compressively engaging said conical support faces, journal pin means secured integrally with said cylinder head plugs to substantially align coaxially with said cylindrical axis and project outwardly from said opposite shell ends, alignment tube means respective to each of said cylinder head plugs having one tube end secured integrally with a respective head plug to project inwardly therefrom along said cylindrical axis, said alignment tube means having distal end joint means to join together the other ends of said tube means with limited, substantially axial, relative displacement freedom, tensible drawbar means positioned axially through said cylinder assembly between oppositely projected journal pin means and tensile adjustment means to compressively load said journal pin means oppositely along the axial length of said shell means against drawbar means tension.
A printing cylinder assembly having a thin cylindrical shell secured to stub shaft means by end collet means having conical compression faces, the improvement comprising shell end plugs having conical compression faces corresponding to said end collet means, journal pins secured integrally to respective end plugs and extended axially outward therefrom, tubular alignment means having one end thereof secured to respective end plugs and extended axially inward therefrom said journal pins and tubular alignment means in substantially coaxial relative alignment, an opposite end of said tubular alignment means respective to each of said tubular means having axially slidable joint means to substantially coaxially join said tubular means opposite ends, and loading means to compressively preload said journal pins along the mutual coaxis.
A printing press having rotary image cylinders, at least one of said cylinders comprising an assembly of cylindrical structural shell means, axle stub means and tieing means to axially preload said axle stub means against said shell means in common axial alignment, said axle stub means comprising a pair of head plugs for compressively bearing against opposite ends of said structural shell means, each of said head plugs having journal pins secured thereto and extending longitudinally outward from respective shell ends along said common alignment axis, said head plugs also having respective axial alignment means secured thereto at one end thereof, said axial alignment means extending longitudinally inwardly from respective shell ends and coaxially jointed at respective distal ends with freedom of relative axial displacement.
Dependencies are inferred from the claim text.