Patent GB-1042022-A (GB)
Title: Improvements in and relating to a method and machine for folding and fastening fabric
Inventor: GREEN JOHN SPENCER
IPC: A41H43/02
Filed: 1962-04-02
Abstract: 1,042,022. Folding edges of non-metallic sheet material. F. THEAK & ROSKILLY Ltd. April 1, 1963 [April 2, 1962], No. 12557/62. Heading B5K. A fabric 8 is folded and fastened by turning a part of the fabric to bring its edge into proximity with the fabric to which it is to be fastened and applying adhesive during the turning action in the region near the edge portion where fastening is to take place, the part of the fabric being turned by a transforming piece 70 shaped to receive at the front thereof part of the flat fabric and upon relative movement between the transforming piece 70 and the fabric 8 longitudinally of the fold being formed to turn the latter and to leave it at the rear of the transforming piece 70 with a fold formed therein. The machine shown comprises a table 2 having an interchangeable tray 4 located by angle plates 6 and holding a piece of fabric 8 which is held in position by a hinged clamp 10. A carriage 12, Figs. 1 and 2, is driven by a chain 14 to run on rollers 28, 30 on the table 2 and a cog wheel 26 engaging in a guide rack 16. The wheel 26 is driven by a sprocket 34 meshing with the chain 14 and kept in engagement therewith by idler sprockets 36, 38. The rollers 28, 30 are driven from the sprocket 34 by the system of shafts and bevels shown in Fig. 2. A follower wheel 60 is mounted at the end of a shaft 52 and is urged by a spring 56 into engagement with a cam surface 64 on the clamp 10. A cage 66 in which the roller 28 is mounted is urged away from bevels 50 by the spring 56, the roller 28 being able to move lengthwise along a key-way (not shown), of the shaft 52. Follower wheels 67 are mounted on the carriage 12 to engage in a guide 69 in the table 2. The transforming piece 70, Fig. 5, is mounted on the carriage 12 and has a surface approximating to the shape generated by radii of a cylinder drawn to a helix wound on that cylinder as indicated by lines 74. The surface is narrowed at 82 at its rearward end. The front 80 of the piece 70 has a downturned lip to facilitate the passage thereof beneath the flat fabric and a tongue 78 is formed with an upturned lip to facilitate its passage over the fabric so that as the carriage 12 traverses from left to right across the table 2 the edge portion of the fabric is folded over. A container 86 (Fig. 3, not shown) for adhesive is mounted on the carriage and supplies adhesive to a nozzle 90 (also not shown) carried by an arm 92, Fig. 2, so that adhesive can be extruded between the edge portion of the fabric which has been turned and the part of the fabric to which this edge portion is to be fastened. As the turned part of the fabric leaves the rear of the piece 70 the roller 28 applies compression. After the conclusion of the advancing movement the carriage 12 pauses for a predetermined period and then returns to its initial position. Figs. 9 and 10 slow rear elevations of the trip devices and gearing of the machine. As the carriage 12 approaches the end of its return stroke a shoe 114 thereon trips a quadrant 104 of a pair of quadrants 102, 104 mounted beneath the table 2 and via a forked link 110 moves a follower pin 120 vertically downwards so that a second pin 122, Fig. 10, is moved up by a rocking lever (not shown). A driven control shaft 124 moves upwardly and bevels 136, 142 engage so that a threaded shaft 146 moves an arm 154 to the right. A driven sliding shaft 158 is moved to the right due to sideways  movement of a bearing 156 transmitted to the shaft 158 through one of a pair of spacer springs 160 and one of a pair of collars 162. Bevels 174, 180 disengage so that the drive is disengaged from an output shaft 178 which drives the chain 14. The carriage 12 pauses while the shaft 158 slides slowly to the right. When the shaft 158 has slid fully to the right bevels 172, 176 engage to transmit the drive to rotate the shaft 178 anticlockwise. The carriage 12 advances and the shoe 114 trips the quadrant 104 to the left so that the rod 106, the plate 116 and the shaft 124 assume their intermediate position, the bevels 136, 142 disengage and the bevels 172, 176 remain in mesh. As the carriage 12 approaches the end of its forward stroke the shoe 114 trips the quadrant 102 to the left, the plate 116 assumes its extreme left position, the shaft 124 is moved downwardly, the bevels 134, 142 engage and the arm 154 is moved to the left. The bevels 172, 176 disengage and the carriage 12 stops. The shaft 158 slowly slides to the left. The carriage 12 begins to return when the bevels 174, 180 engage to drive the shaft 178 clockwise. The shoe 114 trips the quadrant 102 to the right to disengage the bevels 134, 142. Near the end of the return stroke the shoe 114 again trips the quadrant 104 to the right. The shafts 124, 158 are driven from a driven shaft 126 through the gearing shown.  The method is applicable to the manufacture of neckties. One edge of a necktie blank is hemmed on the machine described. A lining is placed on the blank on a different tray 4 and a part of the fabric of differing width, opposite to the hemmed edge, is fastened to the lining. The part having the hemmed edge is then turned to bring its edge portion into proximity with the centre line of the blank so as to overlap the part fastened to the lining and adhesive is applied in the region where fastening is to take place and pressure is applied to this region.