KR830000088A - Top feed for sewing machine - Google Patents

Top feed for sewing machine

Info

Publication number
KR830000088A
KR830000088A KR7803965A KR780003965A KR830000088A KR 830000088 A KR830000088 A KR 830000088A KR 7803965 A KR7803965 A KR 7803965A KR 780003965 A KR780003965 A KR 780003965A KR 830000088 A KR830000088 A KR 830000088A
Authority
KR
South Korea
Prior art keywords
feed dog
dog
upper feed
arm
sewing machine
Prior art date
Application number
KR7803965A
Other languages
Korean (ko)
Other versions
KR830000088B1 (en
Inventor
Robert E Porter
Original Assignee
Robert E Porter
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert E Porter filed Critical Robert E Porter
Priority to KR1019780003965A priority Critical patent/KR830000088B1/en
Application granted granted Critical
Publication of KR830000088B1 publication Critical patent/KR830000088B1/en
Publication of KR830000088A publication Critical patent/KR830000088A/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
    • D05B27/06—Work-feeding means with feed dogs having horizontal and vertical movements arranged above and below the workpieces

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

The upper feed dog is driven via eccentric cams(19,50) & arm(47) from the lower feed dog drive shaft(17). The upper feed dog(36) is resiliently biassed towards the concentric so as to open & close on the workpiece during stitching. The upper feed dog is pivotally attached to the lower dog feed arm(46) so that it also reciprocates laterally with the lower feed dog(12). The resilient biassing is adjustable. A second lower differential feed dog(20) moves relative to the main dog to avoid workpiece wrinkling. The timing of the upper feed dog is precisely synchronous with the lower feed dog and the continuous positive drive connection avoids vibration and noise.
KR1019780003965A 1978-12-29 1978-12-29 Upper part feeding device of sewing machine KR830000088B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019780003965A KR830000088B1 (en) 1978-12-29 1978-12-29 Upper part feeding device of sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019780003965A KR830000088B1 (en) 1978-12-29 1978-12-29 Upper part feeding device of sewing machine

Publications (2)

Publication Number Publication Date
KR830000088B1 KR830000088B1 (en) 1983-02-08
KR830000088A true KR830000088A (en) 1983-02-08

Family

ID=19209635

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019780003965A KR830000088B1 (en) 1978-12-29 1978-12-29 Upper part feeding device of sewing machine

Country Status (1)

Country Link
KR (1) KR830000088B1 (en)

Also Published As

Publication number Publication date
KR830000088B1 (en) 1983-02-08

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