US3776160A - Presser foot for a sewing machine - Google Patents

Presser foot for a sewing machine Download PDF

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Publication number
US3776160A
US3776160A US00249776A US3776160DA US3776160A US 3776160 A US3776160 A US 3776160A US 00249776 A US00249776 A US 00249776A US 3776160D A US3776160D A US 3776160DA US 3776160 A US3776160 A US 3776160A
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US
United States
Prior art keywords
presser
tubular part
axle
presser foot
crank pin
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.)
Expired - Lifetime
Application number
US00249776A
Other languages
English (en)
Inventor
Robert R Casas
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Application granted granted Critical
Publication of US3776160A publication Critical patent/US3776160A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/24—Feed-dog lifting and lowering devices

Definitions

  • the present invention relates to a sewing machine.
  • this presser bar enabling constant pressure to be exerted on the fabric to be sewn.
  • this presser bar is provided with a fixed foot of variousheight or shape.
  • a so called skipping foot which cooperates with the needle bar so as only to press the cloth when the needle penetrates therein.
  • presser foot for a According to theinvention, there is provided a] presser foot forsewing machines comprisinga part
  • a presser member movablewith respect v the rotary axle of which is provided with a manual to a part for attachment to apresser bar with which the machine is provided and a control member for the relathe displacement of these two parts between two extreme positions mounted on one of said parts.
  • This presser foot is characterized by an elastic linking element mounted between the control member and the other part.
  • FIG. 1 shows a front view, in axial section, of the I presser foot mounted on the presser bar of a sewing machine and adjusted to carry out a darning operation;
  • FIG. 2 is a side elevation from left to right of the embodiment shown in FIG. 1;
  • the presser member 2 is provided with a sole 31 with a flat bottom pierced, by a hole 32 for the needle 22, particularly suitable for darning or embroidery operations, in cooperation with a plate 23..
  • the presser member .2 is provided with a sole '33 having a forked end incurved upwardly intended for zigzag stitch sewing, in cooperation with the transporter of the machine effecting the advance of the cloth to be sewn.
  • An actuating member 8 for the movement of thembular part 1 in the passage 3 of the part 4 for the foot to the presser bar 5 is mounted on said attaching part 4.
  • a v 1 This actuating member 8 comprises a crank disc 9 pin 12 is thus inserted between the closed end of the.
  • F IG. 3 is a sideelevation from right-to leftof the em- I bodiment of FIG. 1, with portions removed, of the. resser foot adjusted for'sewing; T
  • FIG. ,4 is a frontelevation from left to right of FIG. 3
  • FIG. 6 is atop plan view, similar to FIG. sponding to darning adjustment;
  • FIG. 7 illustrates diagrammatically the various adjustment positions of the presser foot.
  • FIG. 5 is a top plan view corresponding to FIG. 3,
  • This attaching part or. member 4 has a pas sage or opening 3 in which a tubular part l'is slidably mounted.
  • the tubular part 1 is provided with a presser member 2 at its lowerend.
  • a piston 6, closed at its 5 correupper end, is mounted in sliding manner in the tubular part 1, its lower open end being directed towards the end of the tubular part 1 provided with the presser member 2.
  • a spring v7 supported on one hand against the stop 34 which is carried by the lower end of the tubular part 1 provided with the presser member 2 and,
  • the presser member 2 can be provided with various solesaccording to the type of sewing that itis desired to carry out, these soles being provided .
  • a cross bar 28 which is housed in a transverse groove 29 the presser member 2 through one of its ends and of which the other end 16, curved at a right angle, slides in a groove 17 of the attaching'part 4 providedwith anar-.
  • the needle bar 21 In causing the needle 22 to penetrate into a piece of fabric arranged on the support plate 23, having a hole for the passage of the needle, and intendedto prevent the fabricfrom being drawn in the transporter of the machine, the needle bar 21 simultaneously lowers the lever 19'by means of a lateral projection 24 on the device 25 forattaching the needle 22 to needle bar 21.
  • The'crank pin l2then causes an axial movement of the piston 6 which-lowers the presser member 2 bymeans of spring 7, in order to keep the cloth firmly pressed against the'palte 23 while the needle 22 penetrates into the cloth and it from being displaced during this operation.
  • the needle 22 is no longer engaged in the cloth, be-- tween two successive stitches.
  • the preser member 2 of the presser foot can be locked in its lower position.
  • This locking is effected by the curved end of a spring 26, rigid with the attaching part 4, engaged in one of a plurality of notches 27 provided in an axial tubular extension of the manual drive knob 11.
  • the notches correspond to various positions of the crank pin 12 in which the latter more or less compresses the spring 7 by causing the axial position of the 6 to vary with respect to the tubular part 1.
  • crank pin 12 drives the piston 6 axially in the direction of'the cloth to be sewn on the lowering of the lever 19 by the lateral projection 24 of the needle bar 21 in order to lower the presser member 2 onto the fabric on-the penetration of the needle into the latter.
  • This movement is reversible due to the return spring 14.
  • crank pin 12 occurs in its lowest position, so that the spring 7 undergoes the strongest compression and confers on the presser member 2 a maximum pressure.
  • the curved end of the spring 26 penetrates into the first notch of the notches 27 and immobilizes the manual drive knob 11 against the effect of the return spring 14.
  • knob 11 If the knob 11 is further rotated in anti-clockwise direction, the latter is successively locked by the curved end of the spring 26 in notches corresponding to the positions D, E and F of the crank pin 12 in which the latter compresses the spring 7 less and less which, in its turn, applies decreasing pressure to the presser member 2.
  • a presser foot for a sewing machine including, a presser bar and a needle bar, said presser foot comprising an attaching member for securing said presser foot to said presser bar, said attaching memberhaving an opening extending longitudinally thereof, a tubular part including a shoulder at its upper end, a presser member at its lower end and having an opening in its sidewall beneath said shoulder, said tubular part slidably mounted in the opening in said attaching member and further including a stop member at its lower end adjacent said presser member, actuating means for controlling the relative movements of said tubular part and said attaching member, said means including an' axle rotatably mounted in said attaching member normal to the opening therein, a manual driving knob at one end of said axle, an eccentric crank pin mounted on said axle at its opposite end, said crank pin ex-tending into the sidewall opening in said tubular part, a piston slidably mounted in said tubular part, said piston having a closed upper end and an open lower end, a spring within said piston, the lower
  • said actuating means includes a manual operating device for rotating said axle and crank pin.
  • said actuating means includes a member rotatably mounted on said axle and driven by a member rigid with said needle bar when the latter moves downwardly in a first zone of relative movement of said tubular part and said attaching member, and driven by a manual driving device in a second zone of relative movement of said tubular part and said attaching member.
  • said actuating means includes a return spring tending to restore said eccentric crank pin into the position where it actuates said shoulder of the tubular part.
  • a presser foot according to claim 4 including, means for locking said manual driving knob againstthe action of said return spring in at least one position in which said crank pin actuates said piston.
  • said actuating means includes a lever rotatably mounted on said axle and a lateral projection on said needle bar driving said lever when said needle bar moves in a downward direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US00249776A 1971-05-17 1972-05-03 Presser foot for a sewing machine Expired - Lifetime US3776160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH724471A CH529871A (fr) 1971-05-17 1971-05-17 Pied presse-étoffe pour machine à coudre

Publications (1)

Publication Number Publication Date
US3776160A true US3776160A (en) 1973-12-04

Family

ID=4322106

Family Applications (1)

Application Number Title Priority Date Filing Date
US00249776A Expired - Lifetime US3776160A (en) 1971-05-17 1972-05-03 Presser foot for a sewing machine

Country Status (15)

Country Link
US (1) US3776160A (fr)
AT (1) AT317654B (fr)
AU (1) AU463369B2 (fr)
BE (1) BE782920A (fr)
BR (1) BR7203069D0 (fr)
CA (1) CA957212A (fr)
CH (1) CH529871A (fr)
DE (1) DE2222908C3 (fr)
ES (1) ES402200A1 (fr)
FR (1) FR2139349A5 (fr)
GB (1) GB1333515A (fr)
IE (1) IE36344B1 (fr)
IT (1) IT958844B (fr)
NL (1) NL7206515A (fr)
SE (1) SE390646B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511935C1 (de) * 1985-04-01 1986-04-30 Union Special Gmbh, 7000 Stuttgart Stoffdrueckerfuss

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US301962A (en) * 1884-07-15 chuboh
US2706455A (en) * 1954-07-20 1955-04-19 Rosenberg Seymour Shirring presser-foot for sewing machines
DE1068537B (fr) * 1956-11-21 1959-11-05
US3006299A (en) * 1958-06-27 1961-10-31 Singer Mfg Co Alternating presser device for sewing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US301962A (en) * 1884-07-15 chuboh
US2706455A (en) * 1954-07-20 1955-04-19 Rosenberg Seymour Shirring presser-foot for sewing machines
DE1068537B (fr) * 1956-11-21 1959-11-05
US3006299A (en) * 1958-06-27 1961-10-31 Singer Mfg Co Alternating presser device for sewing machines

Also Published As

Publication number Publication date
IT958844B (it) 1973-10-30
BE782920A (fr) 1972-09-01
AU463369B2 (en) 1975-07-24
ES402200A1 (es) 1975-03-16
FR2139349A5 (fr) 1973-01-05
AU4194272A (en) 1973-11-08
CA957212A (en) 1974-11-05
IE36344L (en) 1972-11-17
DE2222908C3 (de) 1978-05-24
GB1333515A (en) 1973-10-10
IE36344B1 (en) 1976-10-13
SE390646B (sv) 1977-01-03
BR7203069D0 (pt) 1973-07-19
AT317654B (de) 1974-09-10
DE2222908A1 (de) 1972-12-07
DE2222908B2 (de) 1977-09-29
CH529871A (fr) 1972-10-31
NL7206515A (fr) 1972-11-21

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