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US 6,105,521 AGranted
Sewing machine with shuttle replenishing
AssigneeHashima Co., Ltd.
InventorIsao Sato
Life of this patent
Estimating the term…
Abstract
A sewing machine has needles reciprocally movable in a first direction through a fabric web and shuttles reciprocally movable in a second direction perpendicular to the first direction. The used shuttles accommodating an empty bobbin is replaced with the new shuttle accommodating a full bobbin. The needles and the shuttles cooperate to form stitch patterns on the fabric web. A device is provided for the automatic replacement of the used shuttle with the new shuttle.
Claims17
A sewing machine for forming stitch patterns on a fabric web, comprising:
- a plurality of needles reciprocally movable in a first direction through the fabric web;
- shuttles reciprocally movable between a first position and a second position in a second direction perpendicular to the first direction, wherein said shuttles cooperate with the needles to form the stitch patterns on the fabric web;
- bobbins respectively accommodated in the shuttles, wherein each of said bobbins is full of a thread when the associated shuttle is in the first position, wherein each bobbin is empty of the thread when the associated shuttle is in the second position;
- and
- a device for automatically replacing the shuttle accommodating the empty bobbin in the second position with the shuttle accommodating the full bobbin in the first position.
2 more elements
A sewing machine for forming stitch patterns on a fabric web, comprising:
- a plurality of needles reciprocally movable in a first direction through the fabric web;
- shuttles reciprocally movable between a first position and a second position in a second direction perpendicular to the first direction, wherein said shuttles cooperate with the needles to form the stitch patterns on the fabric web;
- bobbins respectively accommodated in the shuttles, wherein each of said bobbins is full of a thread when the associated shuttle is in the first position, wherein each bobbin is empty of the thread when the associated shuttle is in the second position;
- a shuttle holder for holding the shuttle;
- a first mechanism for transferring the shuttle holder between the first position and the second position;
- a second mechanism for discharging the shuttle from the shuttle holder that has been transferred to the second position;
- and
- a third mechanism for supplying the new shuttle to the shuttle holder positioned in the replacing position.
5 more elements
Dependencies are inferred from the claim text.