Needle bar for chain drawing frame

Abstract

Faller bar for chain drafting systems The claim is for a faller bar ( 1 ) with a support bar ( 2 ) and a casing ( 4 ) surrounding the same, and also for a number of pins ( 3 ) arranged adjacent to each other, wherein the support bar ( 2 ) has a diameter (d) of 5.9 mm to 6.1 mm and the casing ( 4 ) has a thin-walled zone ( 4 a ) having a wall thickness (b) of 1.4 mm to 1.8 mm.

1 - 6 . (canceled) 
   
   
       7 . A faller bar, comprising:
 a support bar having a diameter of 5.9 mm to 6.1 mm;   a casing surrounding said support bar, said casing having a thin-walled zone with a wall thickness of 1.4 mm to 1.8 mm; and   a number of pins disposed adjacent to each other and next to said casing.   
   
   
       8 . The faller bar according to  claim 7 , wherein said support bar has an under side and said thin-walled zone being on said underside opposite to said pins and extends at least over half a circumference of said support bar. 
   
   
       9 . The faller bar according to  claim 7 , wherein:
 said support bar has a longitudinal axis; and   each of said pins has a longitudinal axis, a distance between said longitudinal axis of each of said pins in relation to said longitudinal axis of said support bar is greater than 2.15 mm.   
   
   
       10 . The faller bar according to  claim 9 , wherein said distance is between 2.6 mm and 2.9 mm. 
   
   
       11 . The faller bar according to  claim 9 , wherein said distance is 2.75 mm. 
   
   
       12 . A chain drafting system for a textile machine, the chain drafting system comprising:
 at least two transport chains each having a number of faller bars, each of said faller bars including:
 a support bar having a diameter of 5.9 mm to 6.1 mm; 
 a casing surrounding said support bar, said casing having a thin-walled zone with a wall thickness of 1.4 mm to 1.8 mm; and 
 a number of pins disposed adjacent to each other and next to said casing. 
   
   
   
       13 . The chain drafting system according to  claim 12 ,
 wherein said support bar has a longitudinal axis, a distance between said longitudinal axis of two adjacent said support bar of said faller bars defining a chain spacing being 9.525 mm;   wherein each of said pins has a pin longitudinal axis; and   further comprising a delivery width being reduced in a direction of a take-off roller by an amount corresponding to a given distance between said longitudinal axis of each of said pins to said longitudinal axis of said support bar.