Automatic, in situ bobbin spool loading

Sewing – Elements – Bobbin winding

Patent

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Details

226113, 226158, 242 20, 112186, 112181, D05B 5726, D05B 3704, D05B 4500, H03K 1700

Patent

active

042443130

ABSTRACT:
Thread-loading apparatus for loading a bobbin spool with a predetermined length of thread between sewing operations wherein there is a reciprocal loading tube arranged to receive and draw thread from a package of thread, deliver its leading end to the bobbin and project it onto the bobbin while the latter is being rotated at a high speed so as to be caught thereby and wound onto the bobbin; a slack-producing device for drawing a slack length of thread from the package of thread preparatory to a loading operation to thus eliminate the inertial resistance of the package of thread to giving up thread; a precisely-controlled thread measuring device employed to control the length of thread delivered to the bobbin; and a bobbin having peripherally-spaced flexible fingers on its hub for entraining the leading end of the thread delivered to the bobbin. The apparatus, in one form, comprises a loading tube which is arcuately reciprocal toward and from the loading position and, in another, a loading tube which is rectilinearly reciprocal toward and from the loading position.

REFERENCES:
patent: 2781790 (1957-02-01), Hutchins
patent: 3509840 (1970-05-01), Rovin
patent: 3575217 (1971-04-01), Pfarrwaller
patent: 3580444 (1971-05-01), Van Mullekom
patent: 3582796 (1971-06-01), Shifflet, Jr.
patent: 3628129 (1971-12-01), Riley
patent: 3628480 (1971-12-01), Van Ness
patent: 3740588 (1973-06-01), Stratton et al.
patent: 3832960 (1974-09-01), Mayer et al.
patent: 4002130 (1977-07-01), Rovin et al.
patent: 4117789 (1978-10-01), Rovin et al.

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