Exchangeable slip-on reinforcement for a press roller base body on spinning machine drawing frames

Abstract

An exchangeable reinforcing element for pressure rollers of drafting units of spinning machines. The reinforcing element comprises a thin reinforcing tube and a flexible roller covering securely affixed thereto which can be slid onto the pressure roller base body. The reinforcing element is cut from a long tube body to the required effective width. The roller covering is turned down at both ends in such a way that the reinforcing tube projects laterally over the roller covering.

1 - 4 . (canceled)  
   
   
       5 . An exchangeable reinforcing element mountable on a roller base body of a drafting unit of a spinning machine, comprising: 
 a reinforcing tube; and    a flexible roller covering having a running surface for fiber material,    wherein 
 the flexible roller covering is concentrically located on an outer surface of the reinforcing tube, and  
 the flexible roller covering is trimmed at its axial end areas such that the reinforcing tube projects axially beyond the axial end areas of the flexible roller covering.  
   
   
   
       6 . A reinforcing element according to  claim 5 , wherein the reinforcing tube, in its areas which project axially beyond the axial end areas of the flexible roller covering, has a slightly smaller outer diameter than in a middle area of the reinforcing tube covered over by the flexible roller covering.  
   
   
       7 . An exchangeable reinforcing element mountable on a roller base body of a drafting unit of a spinning machine, comprising: 
 a reinforcing tube;    a flexible roller covering having a running surface for fiber material; and    supplementary rings,    wherein 
 the flexible roller covering is concentrically located on an outer surface of the reinforcing tube,  
 the flexible roller covering and the reinforcing tube have the same axial length,  
 the supplementary rings and the reinforcing tube have the same inner diameter, and  
 the supplementary rings are coaxially located adjacent to axial ends of the reinforcing tube.  
   
   
   
       8 . A reinforcing element according to  claim 5 , wherein at its axial ends, the reinforcing tube is provided with an inner diameter which is slightly larger than an inner diameter at a middle of the reinforcing tube.  
   
   
       9 . A reinforcing element according to  claim 6 , wherein at its axial ends, the reinforcing tube is provided with an inner diameter which is slightly larger than an inner diameter at a middle of the reinforcing tube.  
   
   
       10 . A reinforcing element according to  claim 7 , wherein the supplementary rings are provided at their axial end areas with an inner diameter which is slightly larger than an inner diameter at a middle of the reinforcing tube.