US2024435A - Sewing machine throat-plate - Google Patents

Sewing machine throat-plate Download PDF

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Publication number
US2024435A
US2024435A US715270A US71527034A US2024435A US 2024435 A US2024435 A US 2024435A US 715270 A US715270 A US 715270A US 71527034 A US71527034 A US 71527034A US 2024435 A US2024435 A US 2024435A
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plate
throat
work
feed
support
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Expired - Lifetime
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US715270A
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George M Eames
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Singer Co
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Singer Co
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Publication date
Priority claimed from US691938A external-priority patent/US2005673A/en
Priority claimed from GB1410834A external-priority patent/GB415987A/en
Application filed by Singer Co filed Critical Singer Co
Priority to US715270A priority Critical patent/US2024435A/en
Priority claimed from US715269A external-priority patent/US2024434A/en
Application granted granted Critical
Publication of US2024435A publication Critical patent/US2024435A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B73/00Casings
    • D05B73/04Lower casings
    • D05B73/12Slides; Needle plates
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B57/00Loop takers, e.g. loopers
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B73/00Casings
    • D05B73/005Doors or covers for accessing inner parts of the machine; Security devices therefor

Definitions

  • This invention relates to improvements in sewing machines and has for its primary object .to facilitate adaptation of a sewing machine for straightaway stitching,v embroidering, darning andli-ke operations. More specifically, the invention has for its object to provide for quickly and easily replacingk a sewing machine throat-plate by another having different characteristics.
  • the invention consists in the combination throat-plate andy slide-plate arrangement hereinafter 'described and claimed, the present application being a divisionof my prior patent application Serial No. 691,938, ⁇ ledOct. 3, 1933..
  • Fig. 1 is a front side elevation, partly insection, of a portion of the stitch-forming end of a sewing machine.
  • Fig. 2 is a front end elevation of the machine, omitting the bracket-arm.
  • Fig. 3 is a bottom plan view ofa portion of the clothor bed-plate.
  • Fig. 4 is a top-plan View, reduced inA size,.of a throatplate yemployed for zigzag stitching with a straightawayfeed.
  • Fig.5 is a top-plan View, reduced in size, of a feed-cover type of throat-plate employed for embroidering and darning purposes.
  • Fig. 6 is an Venlargedy vertical section of the throat-plate shownin Fig. 5 and as applied to the cloth-plate of the sewing machine.
  • the present improvement has been embodied in a sewing machine having a flat-top bed-plate or work-support I overhung by a bracket-arm ⁇ terminating in a head 2.
  • a vibratorygate 3 in which avertically disposed needle-bar ll, carrying at its lower end a needle 5, isl journaled for endwise reciprocation. Also journaled; for vertical movement in the head 2 is the usual spring depressed presser-.bar to the lower end of .which is secured a presser-foot 1.
  • a loop-taker 8 of the horizontal-axisV 'shaft il] is rotatably journaled in suitable bearing lugs depending from the bed-plate I and is driven from a rotary loop-taker actuating shaft March I I by suitable gear connections therewith whereby the loop-taker is rotated twice for each needle reciprocation.
  • the work is advanced in a line transverse to the plane of needle-vibration by'a feeding mech- 5 anism including a feed-dog I2 of the lower fourmotion type.
  • the feed-dog I2' is carried by a feed-bar I3 which is pivotally secured to a feedrocker M of a feed-advance rock-shaft I5, journaled in suitable bearings at the under side of lo thel work-support I,V said rock-shaft I5 being actuated in any suitable manner.
  • Rising and falling movements are imparted to the' feed-dog I2 from a feed-lift cam IB carried by the looptaker actuating shaft II, said, cam I6 being em- 1:5 braced by a forked rock-arm; Il suitably secured upon a short feed-lift rock-shaft I8 disposed in parallelism with the feed-advance rock-shaft I5.
  • Extending rearwardly fromthe feed-lift rockshaft I8 is a feed-lift arm I9 provided at one side 20 thereof with a roller-stud 20 receivedv in a horizontal slot 2
  • a flat throat-plate 22 has a needle-aperture in the form of a slot 23 elongated in a direction to accommodate the laterally vibratory needle 5, said throat-plate also 30 having feed-slotsy 24 through which the feed-dog I2 may operate.
  • the throat-plate 22 comprises a combination ofthe usualfslide-plate and throatplate heretofore commonly employed and is formed with-parallel sidel edges 25 merging into a rounded inner end 26 opposite to a straightedge outer end 21 ⁇ V adapted to coincide with the front-end edge 28Y of the work-support I.
  • the work-support I is provided with an opening 29, corresponding to the described shape of the throat-plate 22 and extending inwardly from the edge 28 of the work-support in a direction crosswise of the line of feed to expose the'loop-taker 8 and the feed-dog I2.
  • the work-support I is provided with an upwardly open recessed guideway 30 affording a seat for and confining the throat-plate 22 against movement in the plane thereof, excepting ⁇ toward the edge 28 of the work-support.
  • Releasable locking means is provided to normally anchor the throat-plate 22 against movement from operative position in the plane of the work-support, saidv locking means in the present 55 instance consisting of a locking-pin 3
  • a member 33 Suitably secured to the under side of the throat-plate 22, adjacent to the straight end 21 thereof, is a member 33 from which extend oppositely directed wings 34 oomprising underhung spring means adapted to slidably engage the beveled under side of the worksupport I at opposite sides of the opening 29 and to yieldingly confine the throat-plate to sliding movements in the guideway 30.
  • the throat-plate 22 By pressing upwardly against the under side of the throat-plate 22 adjacent to the feed-dog I2, the throat-plate may be tilted slightly upwardly against the yielding action of the spring-wings 34 to raise the rounded end 26 of the throat-plate sufficiently to withdraw the locking-pin 3
  • the throatplate 22 is now free for sliding movement in the guideway 30 forv removal of the throat-plate, to thereby provide for access to the loop-taker and feed-dog, and also for the substitution of another throat-plate therefor. It will be observed that the present throat-plate expedient obviates the necessity of removing securing screws therefor and that the interchanging of the throat-plates is thereby facilitated.
  • a substitute throat-plate (not shown) may be constructed exactly like the described throatplate 22, with the exception that the needle-aperture is round instead of elongated, said substitute throat-plate being adapted for straightaway sewing, i e., adapted for use when the needle 5 is non-vibratory.
  • Figs. 5 and 6 of the drawings illustrate another substitute throat-plate 35 which is particularly adapted for embroidering and darning purposes. It will be observed that the throat-plate 35 differs from the throat-plate 22 primarily in omitting the feed-slots of the latter, and in being formed with an annular raised portion 36 having a substantially central needle-aperture 31.
  • the raised portion 36 of the throat-plate serves as a cover for the feed-dog I2, to provide for manually manipulating the work for embroidering or darning purposes.
  • other substitute throatplates may be employed, as for instance, plates provided with eyelet-spurs.
  • a sewing machine having a horizontally disposed work-support, spaced guideways upon said work-support defining therebetween an opening in the work-support, a vertically reciprocatory needle, a loop-taker below and exposed by said opening in the work-support, a throat-plate provided with a needle-aperture and adapted to removably span said opening in the work-support, and spring means yieldably confining said throatplate upon saidgguideways for tilting and sliding movements thereupon.
  • a sewing machine having a horizontally disposed work-support, spaced guideways upon said work-support defining therebetween an opening in the work-support, a vertically reciprocatory needle, a loop-taker below and exposed by said opening in the work-support, a throat-plate provided with a needle-aperture and adapted to removably span said opening in the work-support, spring means yieldably confining said throatplate upon said guideways for tilting and sliding movements thereupon, and a locking device for normally anchoring said throat-plate against movement in the plane thereof upon said guideways.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism including a feed-dog, a work-support, substantially parallel guideways upon said work-support extending crosswise of the direction of feed and defining therebetween an opening in the work-support, and a throatplate slidably mounted for movement lengthwise of said guideways to and from an operative position spanning said opening in the work-support, said throat-plate being provided with a needleaperture and a feed-dog slot.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism, a work-support, spaced guideways upon said work-support extending crosswise of the direction of feed and defining therebetween an opening in the work-support, a throat-plate'provided with a needle-aperture and adapted to removably span said opening in the work-support, and spring.
  • means extending from the under side of said throat-plate yieldably conflning the throat-plate upon said guideways for tilting and sliding movements thereupon.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle and a loop-taker, work-feeding mechanism including a feed-dog, a work-support, spaced guideways upon said work-support extending inwardly from an edge of the work-support in a direction crosswise of the direction of feed, said guideways deiining therebetween an opening in the worksupport exposing said loop-taker, a throat-plate provided with a needle-aperture and mounted upon said guideways for tilting and sliding movements thereupon, and a locking device for normally anchoring said throat-plate against slid- 40 ing movement upon said guideways.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism including a feed-dog, a work-support formed with an opening extending inwardly from an edge of the Work-support in a direction crosswise of the direction of feed, and a throat-plate closing said opening and formed with a feed-dog slot and a needle-aperture, said throat-plate having near one end thereof underhung spring means slidably engaging said work-support and also having near the other end thereof a downwardly projecting locking pin.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle and a loop-taker, work-feeding mechanism, a worksupport having an open-topped guideway, a throat-plate mounted upon said guideway and covering said loop-taker, said throat-plate having a needle-aperture adjacent one end thereof, underhung spring means carried by Said throatplate yieldably confining said throat-plate upon said guideway for sliding movement thereupon and permittingv an upward tilting movement of the needle-aperture end of the throat-plate, and a locking device for normally anchoring said throat-plate against movement in the plane thereof upon said guideway, said locking device being rendered ineifective by said upward tilting movement of the throat-plate.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle
  • a work-feeding mechanism a work-support provided with substantially parallel guideways ex- Jtending crosswise of the direction of feed and defining therebetween an opening in the Worksupport, a throat-plate provided with a needleaperture and removably mounted upon said guideways for sliding movement thereupon crosswise o f the line of feed, and throat-plate securing means providing for tilting said throat-plate relatively to said Work-support.
  • a sewing machine having stitch-forming mechanism including a reciprocatory needle, Work-feeding mechanism including a feed-dog,
  • a work-support provided with substantially parallel guideways extending crosswise of the drection of feed and dening therebetween an opening in the Work-support, a throat-plate removably mounted upon said guideways for sliding movement thereupon crosswise of the direction of feed, and throat-plate securing means providing for tilting said throat-plate relatively to said Work-support, said throat-plate having aV feed-dog covering portion provided with a needleaperture.

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

Description

Dec. 17, 1935. G M EAMES 2,024,435
SEWING MACHINE THROAT PLATE Original Filed Oct. 3, 193I5 2 Sheets-Sheet Y1 30 P 25 ze l? 2f 50 25 1 e@ 34 i $9 O /55 54 @gaffe ./lames Dec. 17, 1935. l G. M EAMES i 2,024,435
SEWING MACHINE THROAT PLATE Original Filed Oct. 3, 1953 A 2 Sheets-Sheet 2 IIIL\\\\\\\\\\\\\\\\\\\\\\ @M W W' Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE SEWING MACHINE THROAT-PLATE Original application October 3, 1933, Serial No.
691,938. Divided and this application 13, 1934, Serial No. 715,270
9 Claims.
This invention relates to improvements in sewing machines and has for its primary object .to facilitate adaptation of a sewing machine for straightaway stitching,v embroidering, darning andli-ke operations. More specifically, the invention has for its object to provide for quickly and easily replacingk a sewing machine throat-plate by another having different characteristics.
The invention consists in the combination throat-plate andy slide-plate arrangement hereinafter 'described and claimed, the present application being a divisionof my prior patent application Serial No. 691,938,` ledOct. 3, 1933..
.In the accompanyingdrawings, Fig. 1 is a front side elevation, partly insection, of a portion of the stitch-forming end of a sewing machine. Fig. 2 is a front end elevation of the machine, omitting the bracket-arm. Fig. 3 is a bottom plan view ofa portion of the clothor bed-plate. Fig. 4 is a top-plan View, reduced inA size,.of a throatplate yemployed for zigzag stitching with a straightawayfeed. Fig.5 is a top-plan View, reduced in size, of a feed-cover type of throat-plate employed for embroidering and darning purposes. Fig. 6 is an Venlargedy vertical section of the throat-plate shownin Fig. 5 and as applied to the cloth-plate of the sewing machine.
Referring to the drawings, the present improvement has been embodied in a sewing machine having a flat-top bed-plate or work-support I overhung by a bracket-arm` terminating in a head 2.
Mounted in the bracket-arm head 2 is a vibratorygate 3 in which avertically disposed needle-bar ll, carrying at its lower end a needle 5, isl journaled for endwise reciprocation. Also journaled; for vertical movement in the head 2 is the usual spring depressed presser-.bar to the lower end of .which is secured a presser-foot 1.
Cooperating with the needle 5 below the worksupport I is a loop-taker 8 of the horizontal-axisV 'shaft il] is rotatably journaled in suitable bearing lugs depending from the bed-plate I and is driven from a rotary loop-taker actuating shaft March I I by suitable gear connections therewith whereby the loop-taker is rotated twice for each needle reciprocation.
The work is advanced in a line transverse to the plane of needle-vibration by'a feeding mech- 5 anism including a feed-dog I2 of the lower fourmotion type. The feed-dog I2' is carried by a feed-bar I3 which is pivotally secured to a feedrocker M of a feed-advance rock-shaft I5, journaled in suitable bearings at the under side of lo thel work-support I,V said rock-shaft I5 being actuated in any suitable manner. Rising and falling movements are imparted to the' feed-dog I2 from a feed-lift cam IB carried by the looptaker actuating shaft II, said, cam I6 being em- 1:5 braced by a forked rock-arm; Il suitably secured upon a short feed-lift rock-shaft I8 disposed in parallelism with the feed-advance rock-shaft I5. Extending rearwardly fromthe feed-lift rockshaft I8 is a feed-lift arm I9 provided at one side 20 thereof with a roller-stud 20 receivedv in a horizontal slot 2| provided in; the feed-bar I3.
The present invention comprehends` the employment of different types of throat-plates which are* Vreadily interchangeable to suit the 25" character vof' the work. As illustrated in Figs. 1 to 4, inclusive, of the drawings, a flat throat-plate 22 has a needle-aperture in the form of a slot 23 elongated in a direction to accommodate the laterally vibratory needle 5, said throat-plate also 30 having feed-slotsy 24 through which the feed-dog I2 may operate. The throat-plate 22 comprises a combination ofthe usualfslide-plate and throatplate heretofore commonly employed and is formed with-parallel sidel edges 25 merging into a rounded inner end 26 opposite to a straightedge outer end 21`V adapted to coincide with the front-end edge 28Y of the work-support I. The work-support I is provided with an opening 29, corresponding to the described shape of the throat-plate 22 and extending inwardly from the edge 28 of the work-support in a direction crosswise of the line of feed to expose the'loop-taker 8 and the feed-dog I2. lAlong the'side edges and rounded end of the opening 2'9, the work-support I is provided with an upwardly open recessed guideway 30 affording a seat for and confining the throat-plate 22 against movement in the plane thereof, excepting` toward the edge 28 of the work-support.
Releasable locking means is provided to normally anchor the throat-plate 22 against movement from operative position in the plane of the work-support, saidv locking means in the present 55 instance consisting of a locking-pin 3| depending from the throat-plate at the rounded end thereof and adapted to enter an aperture 32 in the guideway 30. Suitably secured to the under side of the throat-plate 22, adjacent to the straight end 21 thereof, is a member 33 from which extend oppositely directed wings 34 oomprising underhung spring means adapted to slidably engage the beveled under side of the worksupport I at opposite sides of the opening 29 and to yieldingly confine the throat-plate to sliding movements in the guideway 30. By pressing upwardly against the under side of the throat-plate 22 adjacent to the feed-dog I2, the throat-plate may be tilted slightly upwardly against the yielding action of the spring-wings 34 to raise the rounded end 26 of the throat-plate sufficiently to withdraw the locking-pin 3| from the aperture 32 and to clear the feed-dog I2. The throatplate 22 is now free for sliding movement in the guideway 30 forv removal of the throat-plate, to thereby provide for access to the loop-taker and feed-dog, and also for the substitution of another throat-plate therefor. It will be observed that the present throat-plate expedient obviates the necessity of removing securing screws therefor and that the interchanging of the throat-plates is thereby facilitated.
A substitute throat-plate (not shown) may be constructed exactly like the described throatplate 22, with the exception that the needle-aperture is round instead of elongated, said substitute throat-plate being adapted for straightaway sewing, i e., adapted for use when the needle 5 is non-vibratory.
Figs. 5 and 6 of the drawings illustrate another substitute throat-plate 35 which is particularly adapted for embroidering and darning purposes. It will be observed that the throat-plate 35 differs from the throat-plate 22 primarily in omitting the feed-slots of the latter, and in being formed with an annular raised portion 36 having a substantially central needle-aperture 31. The raised portion 36 of the throat-plate serves as a cover for the feed-dog I2, to provide for manually manipulating the work for embroidering or darning purposes. Obviously, other substitute throatplates may be employed, as for instance, plates provided with eyelet-spurs.
Having thus set forth the nature of the invention, what I claim herein is:-
1. A sewing machine having a horizontally disposed work-support, spaced guideways upon said work-support defining therebetween an opening in the work-support, a vertically reciprocatory needle, a loop-taker below and exposed by said opening in the work-support, a throat-plate provided with a needle-aperture and adapted to removably span said opening in the work-support, and spring means yieldably confining said throatplate upon saidgguideways for tilting and sliding movements thereupon.
2. A sewing machine having a horizontally disposed work-support, spaced guideways upon said work-support defining therebetween an opening in the work-support, a vertically reciprocatory needle, a loop-taker below and exposed by said opening in the work-support, a throat-plate provided with a needle-aperture and adapted to removably span said opening in the work-support, spring means yieldably confining said throatplate upon said guideways for tilting and sliding movements thereupon, and a locking device for normally anchoring said throat-plate against movement in the plane thereof upon said guideways.
3. A sewing machine having stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism including a feed-dog, a work-support, substantially parallel guideways upon said work-support extending crosswise of the direction of feed and defining therebetween an opening in the work-support, and a throatplate slidably mounted for movement lengthwise of said guideways to and from an operative position spanning said opening in the work-support, said throat-plate being provided with a needleaperture and a feed-dog slot.
4. A sewing machine having stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism, a work-support, spaced guideways upon said work-support extending crosswise of the direction of feed and defining therebetween an opening in the work-support, a throat-plate'provided with a needle-aperture and adapted to removably span said opening in the work-support, and spring. means extending from the under side of said throat-plate yieldably conflning the throat-plate upon said guideways for tilting and sliding movements thereupon.
5. A sewing machine having stitch-forming mechanism including a reciprocatory needle and a loop-taker, work-feeding mechanism including a feed-dog, a work-support, spaced guideways upon said work-support extending inwardly from an edge of the work-support in a direction crosswise of the direction of feed, said guideways deiining therebetween an opening in the worksupport exposing said loop-taker, a throat-plate provided with a needle-aperture and mounted upon said guideways for tilting and sliding movements thereupon, and a locking device for normally anchoring said throat-plate against slid- 40 ing movement upon said guideways.
6. A sewing machine having stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism including a feed-dog, a work-support formed with an opening extending inwardly from an edge of the Work-support in a direction crosswise of the direction of feed, and a throat-plate closing said opening and formed with a feed-dog slot and a needle-aperture, said throat-plate having near one end thereof underhung spring means slidably engaging said work-support and also having near the other end thereof a downwardly projecting locking pin.
7. A sewing machine having stitch-forming mechanism including a reciprocatory needle and a loop-taker, work-feeding mechanism, a worksupport having an open-topped guideway, a throat-plate mounted upon said guideway and covering said loop-taker, said throat-plate having a needle-aperture adjacent one end thereof, underhung spring means carried by Said throatplate yieldably confining said throat-plate upon said guideway for sliding movement thereupon and permittingv an upward tilting movement of the needle-aperture end of the throat-plate, and a locking device for normally anchoring said throat-plate against movement in the plane thereof upon said guideway, said locking device being rendered ineifective by said upward tilting movement of the throat-plate.
8. A sewing machine having stitch-forming mechanism including a reciprocatory needle,
work-feeding mechanism, a work-support provided with substantially parallel guideways ex- Jtending crosswise of the direction of feed and defining therebetween an opening in the Worksupport, a throat-plate provided with a needleaperture and removably mounted upon said guideways for sliding movement thereupon crosswise o f the line of feed, and throat-plate securing means providing for tilting said throat-plate relatively to said Work-support.
v9. A sewing machine having stitch-forming mechanism including a reciprocatory needle, Work-feeding mechanism including a feed-dog,
a work-support provided with substantially parallel guideways extending crosswise of the drection of feed and dening therebetween an opening in the Work-support, a throat-plate removably mounted upon said guideways for sliding movement thereupon crosswise of the direction of feed, and throat-plate securing means providing for tilting said throat-plate relatively to said Work-support, said throat-plate having aV feed-dog covering portion provided with a needleaperture.
GEORGE M. EAMES.
US715270A 1933-10-03 1934-03-13 Sewing machine throat-plate Expired - Lifetime US2024435A (en)

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US715270A US2024435A (en) 1933-10-03 1934-03-13 Sewing machine throat-plate

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US691938A US2005673A (en) 1933-10-03 1933-10-03 Sewing machine
GB1410834A GB415987A (en) 1933-11-21 1933-11-21 Feed adjusting mechanism for a sewing machine
US715270A US2024435A (en) 1933-10-03 1934-03-13 Sewing machine throat-plate
US715269A US2024434A (en) 1933-10-03 1934-03-13 Feeding mechanism for sewing machines

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666405A (en) * 1951-06-05 1954-01-19 Singer Mfg Co Hinged presser-foot
US2679217A (en) * 1952-02-01 1954-05-25 Kalanick Eyelet forming attachment for sewing machines
US3060878A (en) * 1960-01-25 1962-10-30 Singer Mfg Co Sewing machine throat plate fastening means
US3131660A (en) * 1961-05-26 1964-05-05 Maruzen Sewing Machine Throat plate for a sewing machine
US3376839A (en) * 1966-05-31 1968-04-09 Mite Corp Throat plate for sewing machine
FR2225985A5 (en) * 1973-04-13 1974-11-08 Manufrance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666405A (en) * 1951-06-05 1954-01-19 Singer Mfg Co Hinged presser-foot
US2679217A (en) * 1952-02-01 1954-05-25 Kalanick Eyelet forming attachment for sewing machines
US3060878A (en) * 1960-01-25 1962-10-30 Singer Mfg Co Sewing machine throat plate fastening means
US3131660A (en) * 1961-05-26 1964-05-05 Maruzen Sewing Machine Throat plate for a sewing machine
US3376839A (en) * 1966-05-31 1968-04-09 Mite Corp Throat plate for sewing machine
FR2225985A5 (en) * 1973-04-13 1974-11-08 Manufrance

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