Sewing machine with thread wiper and auxiliary cutter

Details Sewing machine with thread wiper and auxiliary cutter Sewing machine with thread wiper and auxiliary cutter

1993-03-31

1994-03-01

Nerbun, Peter

Sewing

Elements

Frames

112290, 112291, 112300, 112286, 112324, D05B 6502

Patent

active

052897915

ABSTRACT:
A double-stitch sewing machine is provided which, in a preferred embodiment, includes a throat plate and feed dog with a needle opening for supporting a material to be sewn, a reciprocating needle to penetrate the material, the needle having an eyelet for insertion of a needle thread, the needle being able to penetrate through the sewn material and carry the needle thread through the needle opening, a rotating hook for pulling on the needle thread after insertion of the needle thread through the needle opening, forming a loop in the needle thread with a first leg of the loop being joined with the sewn material and the needle and a second leg of the loop being joined only with the sewn material, a bobbin carrier mounted within the rotating hook having an adjacent clearance with the rotating hook, allowing the rotating hook to cause the needle thread to be brought underneath the bobbin carrier, the bobbin carrier dispensing bobbin thread in cooperation with the rotating hook pulling of the needle thread, a first cutter for cutting the needle thread, separating the needle thread first and second legs and cutting the bobbin thread, forming a first leg of the bobbin thread connecting with the bobbin and a second leg of the bobbin thread connecting with the sewn material, the first cutter insuring a predetermined length of the needle thread first leg, a thread wiper for pulling on the first leg of the needle thread, insuring a minimum length of the first leg of the needle thread on a side of the throat plate adjacent the sewn material, and a second cutter generally adjacent the needle opening on a side of the throat plate opposite the sewn material to sever the second leg of the needle thread and the second leg of the bobbin thread more adjacent to the sewn material.

REFERENCES:
patent: 3756177 (1973-09-01), Landwehr
patent: 4181088 (1980-01-01), Kessler et al.
patent: 4187792 (1980-02-01), Boser et al.
patent: 4478163 (1984-10-01), Keeton
patent: 5005504 (1991-04-01), Albrecht et al.
patent: 5027731 (1991-07-01), Sato et al.
patent: 5042408 (1991-08-01), Suzuki et al.
patent: 5048436 (1991-09-01), Thiele
patent: 5062374 (1991-11-01), Wokeck et al.
patent: 5080031 (1992-01-01), Suzuki et al.
patent: 5113774 (1992-05-01), Dusch et al.
patent: 5125351 (1992-06-01), Prais et al.
patent: 5131340 (1992-07-01), Tajima et al.
patent: 5144901 (1992-09-01), Suzuki
patent: 5176084 (1993-01-01), Keeton

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