Sewing – Elements – Thread guiding or handling
Patent
1993-12-30
1995-02-07
Nerbun, Peter
Sewing
Elements
Thread guiding or handling
D05B 9700, B65H 5704
Patent
active
053867912
ABSTRACT:
A needle bar thread guide device for a sewing machine comprises a needle bar thread guide which is fixed to the lower end portion of the needle bar of the sewing machine and has a thread retaining portion therein for guiding the needle thread and an auxiliary thread guide which is mounted on the needle bar above the needle bar thread guide in such a way as to be adjustable in its vertical position and has a threading hole therein for passing the needle thread therethrough so as to apply a frictional force to the needle thread by contacting the needle thread at the rim thereof, characterized in that the retaining point of the thread retaining portion and the contact point of the threading hole are shifted from each other in a plan view. As a result, the remaining length of the needle thread end under the needle eye after trimming can be made as short as possible and nevertheless the needle thread is effectively prevented from coming off the needle eye at the start of sewing operation, so that keeping the good appearance of the end portion of needle thread remaining in sewn products and preventing errors in sewing operation stand together.
REFERENCES:
patent: 927795 (1909-07-01), Haussler
patent: 3040681 (1962-06-01), Kastrup
patent: 3584589 (1971-06-01), Pirrello
patent: 4215641 (1980-08-01), Dobrjanskyj et al.
patent: 4947773 (1990-08-01), Blanc
Komori Norio
Sato Shuichi
Nerbun Peter
The Singer Company N.V.
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