Claims
- 1. In a sewing machine of the type having a supporting frame and a planar work surface for advancing a workpiece to the sewing zone, a device for simultaneously forming a plurality of spaced and parallel seams of chain stitches comprising:
- (a) a pair of spaced needle bars mounted in the supporting frame including:
- (i) a needle clamp for supporting at least one needle fixed to the lower end of each needle bar;
- (ii) means interconnecting said needle bars for effecting simultaneous actuation thereof;
- (b) a presserfoot bar mounted for reciprocating movement adjacent each said needle bar including:
- (i) a presserfoot mounted on the lower end thereof in operative association with the needles carried by said needle clamps;
- (ii) means interconnecting said presserfoot bars for effecting simultaneous actuation of the presserfeet carried thereby;
- (c) a feed dog mounted below and in operative association with each presserfoot; and
- (d) a looper pivotally mounted below each feed dog including:
- (i) means interconnecting one looper with the other for effecting simultaneous movement thereof to and from operative association with the needles carried by said needle clamps.
- 2. The sewing machine as set forth in claim 1, wherein the work surface extending between said needle bars and presserfeet defines a channel (32) for receiving and guiding the excess workpiece material located intermediate the latter's seam receiving areas.
- 3. The sewing machine as set forth in claim 2, which includes a workpiece guide defining a hood member (33) mounted above and in close proximity with said channel (32).
- 4. The sewing machine as set forth in claim 3, wherein said hood member (33) includes:
- (a) a pair of spaced and downwardly directed side plates (34, 35) defining guideways (36, 37) for guiding a workpiece to the sewing zones.
- 5. The sewing machine as set forth in claim 4 which includes pneumatic supply lines (38, 39, 55) operatively associated with said channel (32) for directing compressed air in directions for urging the portion of the workpiece intermediate the sewing zones into said channel and in a direction rearwardly of said sewing zones.
- 6. The sewing machine as set forth in claim 4, which includes a screenplate (53, 54) attached to and for vertical movement with each presserfoot bar for guiding a workpiece leaving the guideways (36, 37) respectively.
Priority Claims (1)
Number |
Date |
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Kind |
8103466 |
Jul 1981 |
NLX |
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Parent Case Info
This application is a continuation-in-part of Application Ser. No. 398,496 filed July 15, 1982, now abandoned by the same Applicant and assigned to the same assignee of this invention.
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
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Parent |
398496 |
Jul 1982 |
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