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US 4,395,961 AGranted
Underbed thread trimmer for horizontal axis hooks
AssigneeThe Singer Company
InventorsReinhold Papajewski, Dietmar Polixa
Life of this patent
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AssigneeThe Singer Company
InventorsReinhold Papajewski, Dietmar Polixa
Estimating the term…
A horizontal axis loop taker is actuated by a loop taker shaft supported in an eccentric opening in a rotatable bearing located immediately adjacent the loop taker. In a first position of the rotatable bearing, a sewing needle may extend through an orifice in a throat plate to cooperate with the loop taker in the formation of stitches. In a second position of the rotatable bearing achieved by rotating the bearing in a direction to locate the eccentric opening, and thereby the loop taker, further from the throat plate, the sewing needle will not cooperate with the loop taker. The increased clearance thus provided between the loop taker and throat plate will more readily accommodate thread severing devices.
a sewing machine comprising a frame, stitch forming means including a needle bar supported by said frame for to and fro motion, a needle supported in the end of said needle bar, a throat plate supported by said frame, a needle accommodating orifice extending through said throat plate for accommodating said needle extending therethrough in the to and fro motion imparted to said needle by said needle bar, a horizontal axis loop taker disposed adjacent said throat plate for cooperation with said needle extending therethrough in the formation of stitches, means disposed adjacent said loop taker for severing threads at the end of a series of stitches, means for actuating said thread severing means, and means for increasing the clearance between said loop taker and said throat plate when said thread severing means are actuated.
Dependencies are inferred from the claim text.