ES360568A1 - Thread takeup lever arrangement for a sewing machine - Google Patents

Abstract

A thread take-up arrangement comprises an oscillatory lever having one end adapted to draw the thread upwards after the formation of a stitch, and an elongated cover covering said one end over its entire movement and having a substantially U-shaped cross-section with two slits being oppositely located in lateral walls, characterised in that the slits join in the upper end of the cover to permit the thread to be placed in the slits and to freely contact an upper surface of said lever end. As shown, the crank 10, carrying a crank pin actuating the pitman 5 driving the needle bar 7, has a second crank pin 11 to which is pivoted a sleeve 37 slidably receiving a rod 38 rigid with the thread take-up lever 12. One end of the latter is pivoted at 39 to the machine frame, and the other end is hook-shaped to receive the thread, and oscillates within a cover 30 formed at its opposed sides with thread-passing slits 31 which merge into an upper slit (32) partly closed by a tongue 36. The lever end is perforated to receive either a plastics pin or a felt plug, the ends of which engage the opposed surfaces of cover 30 to guide the lever therein and to prevent passage of the thread 18 beneath said end. The latter may, alternatively, be provided with a thread-guiding eyelet. In a modification, the inner end of lever 12 is pivoted on pin 11, and lever 12 is pivoted intermediately to a swinging link.