US3376839A - Throat plate for sewing machine - Google Patents

Throat plate for sewing machine Download PDF

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Publication number
US3376839A
US3376839A US553914A US55391466A US3376839A US 3376839 A US3376839 A US 3376839A US 553914 A US553914 A US 553914A US 55391466 A US55391466 A US 55391466A US 3376839 A US3376839 A US 3376839A
Authority
US
United States
Prior art keywords
throat plate
sewing machine
plate
springs
feed dogs
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
US553914A
Other languages
English (en)
Inventor
Howard Bernard
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.)
Mite Corp
Original Assignee
Mite Corp
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 Mite Corp filed Critical Mite Corp
Priority to US553914A priority Critical patent/US3376839A/en
Priority to GB10523/67A priority patent/GB1140002A/en
Priority to CH463167A priority patent/CH482050A/de
Priority to FR102078A priority patent/FR1518307A/fr
Application granted granted Critical
Publication of US3376839A publication Critical patent/US3376839A/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
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/24—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing formed by general-purpose sewing machines modified by attachments, e.g. by detachable devices
    • D05B3/243—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing formed by general-purpose sewing machines modified by attachments, e.g. by detachable devices for embroidering, e.g. monograms
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/12—Slides; Needle plates

Definitions

  • the needle passes downward through a small slot which is dimensioned to lallow f-or zig-zag motion.
  • some difficulty may .arise because of .a tendency of some fabrics to be pushed downward into the slot, and to s-tick in the slot when the needle rises.
  • the primary object of the present invention is t-o overcome this difficulty.
  • a general object of the invention is to provide an improved throat plate for masking the feed dogs of a sewing machine.
  • a more specific object is to provide .a throat plate for use With the monogrammer disclosed in the aforesaid copending application Ser. No. 482,466.
  • FIG. 1 is a perspective View showing a monogrammer attachment with the improved throat plate therebeneatn;
  • FIG. 2 is ya plan vie-w showing the relation ofthe attachment t-o the ⁇ sewing machine and throat plate;
  • FIG. 3 is a plan view of a throat plate embodying features of the present invention.
  • FIG. 4 is a vertical -section taken approximately on the vline 4 4 of FIG. 3;
  • Tlhe cam is an elongated at bar 26 which is fed through .the attachment from left to right as the sewing operation proceeds.
  • a manually operable knob 28 may be used to preliminarily feed the cam 26 when first inserting it in the attachment.
  • Another knob 30 varies Pce the range of zig-zag width or 'bight, the proportional variation being provided automatically by means of a third cam track on the cam bar 26.
  • the small slot 52 receives the needle of the sewing machine.
  • the slot is somewhat elongated sideward to allow for zig-zag motion in the case of a zig-zag sewing machine. It will be evident that the lift of the springs 42 at each side of the slot 52 insures lift of the fabric out ofthe slot.
  • the large side slots shown at 62 are to provide access to small release pins here suggested at 64, which pins happen to he used in this sewing machine to hold the throat plate in position.
  • the throat plate is held by one or more small screws which are readily released, and in such case the present substitute throat plate is similarly provided with holes for screws for the same lpurpose. Instead of the slots 62, there would be openings affording access to the mounting screws.
  • the monogram area is two inches square.
  • the foot 20 is considerably larger, and moves an inch either side of center position in X and Y position.
  • the plate 40 is six inches by five and a half inches to accommodate this.
  • a throat plate for use in a sewing machine when using an attachment providing its own feed and which therefore requires disabling of the regular feed dogs of the sewing machine, said throat plate comprising means disposed entirely over and resting on the sewing machine feed dogs which means are arranged to rise and fall with the feed dogs while the remaining portions of said throat plate remain fixed, said means having a smooth bottom surface along which the feed dogs readily slide, and having a smooth top surface over which the fabric readily moves.
  • a throat plate as defined in claim 2 in which the ends of the springs extend beneath the top of the throat plate, and in which said springs normally seek their down position but yield resiliently upward when the feed dogs rise.
  • a throat plate as defined in claim 2 in which there is a lower base having the dimension and outline of the regular throat plate in order to be received in the opening for the regular throat plate, and having slots for the feed dogs and for the needle, and a top plate of much greater area disposed directly over and mounted on the aforesaid smaller base, said top plate having long slots for the leaf springs, the ends of said springs ybeing offset downward at the ends of the slots, and portions of said springs being located between the base plate and the top plate.
  • a throat plate as defined in claim 2 in which there is a lower base having the dimension and outline of the regular throat plate in order to be received in the opening for the regular throat plate, and having slots for the feed dogs and for the needle, and a top plate of much greater area disposed directly over and mounted on the aforesaid smaller base, said top plate having slots for the leaf springs, the ends of said springs being offset downward at the ends of the slots, portions of said springs being located Ibetween the base plate and the top plate, and means on said springs to anchor the same against lateral movement while affording the desired up and down flexing movement.
US553914A 1966-05-31 1966-05-31 Throat plate for sewing machine Expired - Lifetime US3376839A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US553914A US3376839A (en) 1966-05-31 1966-05-31 Throat plate for sewing machine
GB10523/67A GB1140002A (en) 1966-05-31 1967-03-06 Throat plate for a sewing machine
CH463167A CH482050A (de) 1966-05-31 1967-04-03 Kehlplatte für eine Nähmaschine
FR102078A FR1518307A (fr) 1966-05-31 1967-04-10 Plaque à aiguille pour machine à coudre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US553914A US3376839A (en) 1966-05-31 1966-05-31 Throat plate for sewing machine

Publications (1)

Publication Number Publication Date
US3376839A true US3376839A (en) 1968-04-09

Family

ID=24211290

Family Applications (1)

Application Number Title Priority Date Filing Date
US553914A Expired - Lifetime US3376839A (en) 1966-05-31 1966-05-31 Throat plate for sewing machine

Country Status (3)

Country Link
US (1) US3376839A (de)
CH (1) CH482050A (de)
GB (1) GB1140002A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266494A (en) * 1977-11-09 1981-05-12 The Singer Company Anti-haloing throat plate
US4297957A (en) * 1978-09-11 1981-11-03 The Singer Company Anti-haloing throat plate
US4316421A (en) * 1978-09-11 1982-02-23 The Singer Company Anti-haloing throat plate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US445468A (en) * 1891-01-27 Feeding device for sewing-machines
US1122999A (en) * 1913-12-17 1914-12-29 John H Pettit Work-supporting plate.
US2024435A (en) * 1933-10-03 1935-12-17 Singer Mfg Co Sewing machine throat-plate
US2911929A (en) * 1958-04-01 1959-11-10 Greist Mfg Co Feed dog cover for zigzag and like attachments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US445468A (en) * 1891-01-27 Feeding device for sewing-machines
US1122999A (en) * 1913-12-17 1914-12-29 John H Pettit Work-supporting plate.
US2024435A (en) * 1933-10-03 1935-12-17 Singer Mfg Co Sewing machine throat-plate
US2911929A (en) * 1958-04-01 1959-11-10 Greist Mfg Co Feed dog cover for zigzag and like attachments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266494A (en) * 1977-11-09 1981-05-12 The Singer Company Anti-haloing throat plate
US4297957A (en) * 1978-09-11 1981-11-03 The Singer Company Anti-haloing throat plate
US4316421A (en) * 1978-09-11 1982-02-23 The Singer Company Anti-haloing throat plate

Also Published As

Publication number Publication date
CH482050A (de) 1969-11-30
GB1140002A (en) 1969-01-15

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