| 摘要 |
<p>PURPOSE: A method and apparatus for forming strings are provided for spring assemblies for mattresses, cushions and the like and, more particularly, and for improved methods and apparatus for forming strings of springs enclosed within pockets having flat overlapping side seams which do not exhibit the disadvantageous condition encountered in prior art assemblies known as false loft. CONSTITUTION: Method and apparatus for forming strings (170) of springs (16) enclosed within pockets having flat overlapping side seams (172), thereby avoiding problems with false loft in mattress construction. Fabric is first formed into an envelope (33) having overlapping portions (A, B). The overlapping portions are then diverted away from one another to form an opening in the envelope, and springs which are compressed by a compressor (80) are inserted into the envelope through the opening. Following insertion of the springs, the overlapping portions are sealed together, individual pockets are created in the envelope, and the springs are rotated within their respective pockets to form a completed string of springs</p> |
