JPS55122494A - Controller for electric sewing machine - Google Patents

Controller for electric sewing machine

Info

Publication number
JPS55122494A
JPS55122494A JP2988879A JP2988879A JPS55122494A JP S55122494 A JPS55122494 A JP S55122494A JP 2988879 A JP2988879 A JP 2988879A JP 2988879 A JP2988879 A JP 2988879A JP S55122494 A JPS55122494 A JP S55122494A
Authority
JP
Japan
Prior art keywords
signal
solenoid
output
bts
backstitching
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2988879A
Other languages
Japanese (ja)
Inventor
Nobufumi Ikisu
Giichi Ishida
Kimiyoshi Ishizaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2988879A priority Critical patent/JPS55122494A/en
Publication of JPS55122494A publication Critical patent/JPS55122494A/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/20—Control devices responsive to the number of stitches made

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To make the pitch of backstitching constant, by supplying an intermittent signal to energize a solenoid for a cloth feed reversing mechanism and applying a continuous signal for a period corresponding to the last stitch. CONSTITUTION:The output of a tachometer generator TG is applied to a speed control circuit SPC to generate a clutch coil signal CLS or a brake coil signal BRS. The output of the tachometer generator is controlled by a foot-pressed switch FSW. The output signal of the lower position detector DD of a position detecting unit PS for sewing-machine needle is applied to a reversal control circuit BTC to produce a signal BTS for energizing a solenoid for a cloth feed reversing mechanism. The signal BTS is made intermittent to reduce power consumption. When the solenoid is deenergized, the signal BTS is made continuous for a period corresponding to a final stitch. According to this constitution, timing can be arranged. As a result, the pitch of backstitching can be made constant.
JP2988879A 1979-03-16 1979-03-16 Controller for electric sewing machine Pending JPS55122494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2988879A JPS55122494A (en) 1979-03-16 1979-03-16 Controller for electric sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2988879A JPS55122494A (en) 1979-03-16 1979-03-16 Controller for electric sewing machine

Publications (1)

Publication Number Publication Date
JPS55122494A true JPS55122494A (en) 1980-09-20

Family

ID=12288500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2988879A Pending JPS55122494A (en) 1979-03-16 1979-03-16 Controller for electric sewing machine

Country Status (1)

Country Link
JP (1) JPS55122494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211484A (en) * 1983-05-16 1984-11-30 三菱電機株式会社 Electromotive sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211484A (en) * 1983-05-16 1984-11-30 三菱電機株式会社 Electromotive sewing machine
JPS6238998B2 (en) * 1983-05-16 1987-08-20 Mitsubishi Electric Corp

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