Bobbin thread winding apparatus

Details Bobbin thread winding apparatus Bobbin thread winding apparatus

1995-10-25

1998-11-24

Mansen, Michael

Winding, tensioning, or guiding

Coil holder or support

Spool or core

112186, 112278, 112279, 226 974, 242 20, 242 36, 2421251, B65H 7532, B65H 6300, B65H 5418, D05B 5710

Patent

active

058396799

ABSTRACT:
A bobbin thread winding apparatus which can reliably twine a bobbin thread around the bobbin within the bobbin case. With the reliable twining of the thread, the thread is not cut and also will never be forced out of the bobbin case, thereby forming a good seam. Since the thread is not wound around a shaft other than the bobbin shaft, no manual operation is required for resetting the thread to the clamping mechanism, improving the reliability of the bobbin thread winding apparatus. The bobbin thread winding apparatus can accurately detect an effective thread winding amount of the bobbin thread irrespective of the yarn count of the thread used, and does not apply an excessive load to the thread winding mechanism, causing any adverse effect on the stitching quality. The bobbin thread winding apparatus allows a lower thread to be drawn out of the thread supply source and is then securely twisted around the bobbin shaft without a thread draw-out mechanism. Without the need to forcibly draw out the lower thread out of the thread supply source, the cost to manufacture the apparatus is reduced and its reliability is increased.

REFERENCES:
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patent: 3509840 (1970-05-01), Rovin
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patent: 4117789 (1978-10-01), Rovin et al.
patent: 4196685 (1980-04-01), Tamura
patent: 4244313 (1981-01-01), Rovin et al.
patent: 4681050 (1987-07-01), Kosmas
patent: 5078068 (1992-01-01), Hager et al.
patent: 5143004 (1992-09-01), Mardix et al.
patent: 5350127 (1994-09-01), Arnold et al.

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