GB940612A - Method and means for slitting and opening tubular fabrics - Google Patents

Abstract

940,612. Finishing fabrics. SAMCOE HOLDING CORPORATION. March 22, 1962 [April 18, 1961], No. 11099/62. Heading D1S. Tubular fabric is slit and opened by slitting the tube longitudinally and opening the slit fabric to flat form, whilst advancing the fabric, by directing the slit edges in divergent directions to open the fabric. The flattened tubular fabric passes from a container 17 over a guide roller 21 and a feltcovered feed roller 22 driven by a motor 23 through a variable pulley 23a and the system 24, .., 32 shown. The speed relationship between the motor 23 and the roller 22 is adjustable by altering the position of the motor 23 by a handwheel 23b. The fabric 16 travels over a guiding frame portion 11, past a slitting station 12, over an opening frame portion 13 and on to a conveyer 14. The guiding and opening frame 11, 13 comprises rod portions 35, 36, 38, 39, 42, 42 inclined relative to each other as shown in Fig. 5. Tubular sections 37, 40, 44, 45 enable the width of the frame to be adjusted. A support rod 46 is slidably mounted in slotted brackets 52 to rest on the conveyer 14. A slitter head 51 comprises a circular blade mounted on a shaft 65 rotated by a motor 67. The slit edges are caused to diverge by the rods 42, 43, the frame 11, 13 having been adjusted so that all longitudinal portions of the fabric are caused to travel through paths of equal length and the slit edges remain tension-free. The conveyer 14 comprises a blanket 18 driven by a roller 48 driven from a variable pulley 54 rotating with the pulley 25 through the system 55, 56, 63, 62, 61, 58, an arm 57 being movable about the shaft 58 to move the pulley 56 to vary the diameter of the pulley 54. For a light weight fabric it is preferable to drive the blanket 18 at a slightly slower speed than the roller 22. The open-width fabric may be collected in layered form on a reciprocating platform 68 driven by a crank 71 on a chain 70 driven through a system 72, .., 77 from the roller 48 and including a variable pulley 75 mounted on an adjustable bar 78. Alternatively, the open-width fabric may be rolled up on a bar 81, Fig. 6 (not shown). Before slitting and opening the fabric may be treated by a calender 102, Fig. 7. The tubular fabric 100 passes around a spreader frame 103a preferably as described in either Specification 701, 792 or U.S.A. Specification 2, 228, 01 and having edge roll mechanism 103b. Steamers 104 and an air screen nozzle 105 are provided. The rolls 103b are driven from a pulley 241 fixed relative to the pulley 24.