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Priority to ES94447UpriorityCriticalpatent/ES94447Y/en
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Publication of ES94447YpublicationCriticalpatent/ES94447Y/en
Perfected shuttle for sewing machines; characterized in that it is constituted essentially by an arch or rib, which slides inside the rail of the machine, and a howitzer, fixed movably to said arch by means of a pin and a spring; inside the howitzer is a large capacity bobbin with the thread, which when passing under a spring, receives from it the necessary tension, which is regulated by a screw, which at the same time serves to fix the spring by one of its extremes. (Machine-translation by Google Translate, not legally binding)
ES94447U1962-07-281962-07-28
Enhanced shuttle for sewing machine
ExpiredES94447Y
(en)
Device for retention of the thread or coil of the thread called weft in the shuttles of the looms (Machine-translation by Google Translate, not legally binding)
Device consisting of a set screw intended to vary the tension of the thread below in sewing machines (Machine-translation by Google Translate, not legally binding)