Sewing – Special machines – Tube forming
Patent
1978-07-03
1980-04-22
Troutman, Doris L.
Sewing
Special machines
Tube forming
11212115, 112262, D05B 100
Patent
active
041989163
ABSTRACT:
Strips of material fed from a supply roll are propelled helically around a cylindrical form with edges of adjacent convolutions of the material contiguous with one another and the contiguous edges of the material are joined together to form a tubular structure. Either before or after formation into a tubular structure the material is cut in predetermined manner into garment lengths and to provide armholes or other openings as desired. In one embodiment means is provided for joining adjacent edges of two or more narrower strips to form a wider composite strip which is then wound helically and edges of adjacent convolutions are joined to form a tubular structure. The narrower strips may be formed from wider material by continuous splitting means which is adjustable to provide different widths. An attachment for a sewing machine has inclined rollers engageable with strips of material being stitched to guide them so that their edges are contiguous as they are being stitched to an underlying tape.
REFERENCES:
patent: 3052197 (1962-09-01), Judelson
patent: 3759198 (1973-09-01), Pisani
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Troutman Doris L.
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