D - Textiles – Paper – 05 – B
Patent
D - Textiles, Paper
05
B
112/53
D05B 35/00 (2006.01) D05B 35/06 (2006.01) D05B 29/06 (2006.01)
Patent
CA 1156099
METHOD AND MECHANISM FOR INSERTING AN ELASTIC BAND IN SELECTED AREAS OF MATTRESS-WRAPPING BEDCLOTHES. ABSTRACT OF THE DISCLOSURE. A method and a mechanical assembly are disclos- ed for mounting, on angular areas of a mattress-envelop- ing bed sheet or similar article, segments of elastic band to elasticize said angular areas. The method re- quires that the angular transversal seams which unite adjacent flaps of the sheet pairwise be detected by a thickness gauge ( 25, 26, 27) so as to generate a si- gnal going to a stitch counting assembly (SCA) wherein a preselected number of stitches corresponding to the angular area to be elasticized has been preselected. The sewing machine is thus started and begins to stitch the continuously fed fabric (1): meanwhile, a double fold is formed on the fabric edge (6) by a specially provided shaping device (17, FG1, FG2). Immediately after, the elastic band feeding device (DS, 29, 30, 31, 32, 33) en- ters action and introduce the elastic band in the fabric double fold for a time determined by the Stitch Counting 2. Assembly (SCA) and the sewing machine (11) sews the ela- stic band and the folded fabric together. As the pre- selected number of stitches has been applied, the elastic band feeding mechanism is withdrawn, the elastic band is locally twisted and a snipping blade (34) housed in the presser foot (36) of the sewing machine (11) snips the clastic band the cycle is restarted and repeated until all the four corner areas of the bedclothes article have been elasticized.
366276
Bassetti S.p.a.
Swabey Ogilvy Renault
LandOfFree
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