US3724407A - Snap on zipper foot - Google Patents

Snap on zipper foot Download PDF

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Publication number
US3724407A
US3724407A US00234963A US3724407DA US3724407A US 3724407 A US3724407 A US 3724407A US 00234963 A US00234963 A US 00234963A US 3724407D A US3724407D A US 3724407DA US 3724407 A US3724407 A US 3724407A
Authority
US
United States
Prior art keywords
presser foot
sole plate
needle
upright
pivot 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
US00234963A
Other languages
English (en)
Inventor
F Simon
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.)
SSMC Inc
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Application granted granted Critical
Publication of US3724407A publication Critical patent/US3724407A/en
Assigned to SSMC INC., A CORP. OF DE reassignment SSMC INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SINGER COMPANY, THE
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
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet

Definitions

  • a shiftable spacer block is carried by the pivot pin leaving sufficient space between the block and a sidewall of the bracket for insertion of the presser foot shank.
  • This invention pertains to a presser foot used in those sewing operations requiring the sewing needle to reciprocate adjacent to one side of the presser foot rather than through an aperture in the center portion of the presser foot sole plate.
  • a presser foot is required in inserting zippers into an article of clothing or in making corded seams where the bulk of the zipper or the cord under the sole plate would create difficulties.
  • the presser foot should be convertible so as to be positioned on either side of the needle at the discretion and convenience of the sewer.
  • prior devices fulfilling the requirements of convertibility were quite bulky with attendant storage problems, fragility and susceptibility to damage affecting their usefulness. Some of these devices require careful positioning by an operator to insure proper alignment of the needle to the device to preclude harpooning of the device with consequent needle breakage and potential harm to the operator.
  • the existing devices are also characterized by relatively high cost.
  • FIG. 1 is an exploded perspective view of the presser foot showing the various parts before assembly of the device
  • FIG. 2 is an assembled perspective view of the presser foot showing a portion of the presser foot shank ready for insertion into the presser foot for positioning left of sewing machine needle,
  • FIG. 3 is a top plan view of the device in the left of the sewing machine needle position.
  • FIG. 4 is a top plan view of the device in the right of the sewing machine needle position.
  • FIG. 1 of the drawing is shown the various parts that make up the presser device.
  • a sole plate 11 is moldedof a plastic material with a forward upstanding rod 12, and a rear upstanding rod 13.
  • the sole plate is formed with a raised front portion 14, longitudinal sides 15 parallel to the direction of the sewing machine feed, a flat work engaging bottom 16, and a flat top portion 17.
  • a countersink 18 at the base of the upstanding rod 12 extends the flat top portion 17 about the rod and into the raised front portion 14.
  • the sole plate also has needle aperture 19 formed on each longitudinal side-l thereof laterally opposite each other, behind the forward upstanding rod 12.
  • a device of approximately the same size as a conven- A bracket 20 having a base section 21 and two A upright ears 22, 23 is formed preferably from sheet metal.
  • the base section 21 is formed with two mount ing holes 24 designed to be received on the upstanding rods 12, 13 on the sole plate, thereby to align the upright cars 22, 23 of the racket 20 with the longitudinal sides of the sole plate.
  • the upright ears 22, 23 of the bracket are formed with two holes 25, 26 laterally opposite each other on a common axis.
  • One of these holes 26 is somewhat smaller than the other in diameter.
  • a pivot pin 27 hav-' ing an undercut end 28 may be inserted in hole with the undercut end extending through the hole 26.
  • a spacer block 29, which may be made of synthetic plastic material, is formed with longitudinal sides 30, a top surface 31 from which projects a finger grip 32, a bottom surface 33 formed with a relief 34 in the rear section thereof, and a hole 35 passing through the block at right angles from one longitudinal side to the other longitudinal side.
  • the hole 35 is sized to be a close slidable fit about the pivot pin 27 and is spaced from the bottom of the spacer block the same distance as the holes 25, 26 in the upright cars 22, 23 of the bracket 20 are spaced from the top of the base section 21 of the bracket.
  • the distance between the longitudinal sides of the spacer block, i.e., the width of the block is approximately equal to the distance between the needle apertures in the sole plate.
  • the assembly of the components is made by first placing the bracket 20 via the mounting holes 24 onto the upstanding rods 12, 13 of the sole plate 11.
  • the upstanding rods may be ultrasonically peened over firmly to clamp the bracket onto the sole plate.
  • the pivot pin 27 may then have its undercut end 28 placed through hole 24 in the upright ear 22 of the bracket; through hole 35 in the spacer block 29; and into hole 26 in the upright ear 2: of the bracket. Both ends of the pivot pin may then be upset to secure the pin in place in the bracket.
  • the spacer block 29 is freely slidable on the pivot pin between the upright ears 22, 23 of the bracket 20.
  • the bottom surface of the spacer block 29 glides along the top surface of the base section 21 of the bracket 20 with the relief 34 in the bottom rear section of the spacer block providing clearance for the peened over rear upstanding rod, 13, of the sole plate.
  • FIGS. 3 and 4 are shown a throat plate 40 of a sewing machine having seam guiding indicia 41 on both sides of needle hole 42.
  • one leg of a feed dog 43 is shown projecting through the feed dog opening 44 in the throat plate 40, the right leg being visible in FIG. 3 and the left leg being visible in FIG. 4. (The conventional center chaining-off feed dog leg is not visible in either view).
  • the presser foot shank 36 is shown inserted into the assembled presser foot on the right side of the spacer block 29 causing the sewing machine needle 45 to register with the needle aperture 19 on the right longitudinal side of the sole plate 11.
  • FIG. 3 the presser foot shank 36 is shown inserted into the assembled presser foot on the right side of the spacer block 29 causing the sewing machine needle 45 to register with the needle aperture 19 on the right longitudinal side of the sole plate 11.
  • a sole plate having a top surface and a bottom work fabric contacting surface joined by longitudinal and lateral sides and having two needle apertures one on each longitudinal side hereof;
  • a bracket formed with a base section and two upright ears one on each side of said base section, said base section being attached to said top surface of said sole plate with said upright ears arranged substantially parallel with said longitudinal sides of said sole plate;
  • said spacer block may be shifted on said pivot pin to allow insertion of said presser foot shank on either side thereof thereby to bring said needle apertures selectively into alignment with said needle of said sewing machine on a elected longitudinal side of said sole plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US00234963A 1972-03-15 1972-03-15 Snap on zipper foot Expired - Lifetime US3724407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23496372A 1972-03-15 1972-03-15

Publications (1)

Publication Number Publication Date
US3724407A true US3724407A (en) 1973-04-03

Family

ID=22883494

Family Applications (1)

Application Number Title Priority Date Filing Date
US00234963A Expired - Lifetime US3724407A (en) 1972-03-15 1972-03-15 Snap on zipper foot

Country Status (4)

Country Link
US (1) US3724407A (enrdf_load_stackoverflow)
JP (1) JPS5218213Y2 (enrdf_load_stackoverflow)
CH (1) CH547379A (enrdf_load_stackoverflow)
GB (1) GB1364963A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854433A (en) * 1972-05-04 1974-12-17 Janome Sewing Machine Co Ltd Zipper foot for use with sewing machine
US3973508A (en) * 1973-12-11 1976-08-10 Janome Sewing Machine Co. Ltd. Sewing machine zipper foot
US4548145A (en) * 1984-07-27 1985-10-22 Kohshin Seimitsu Kikai Kabushiki Gaisha Holder for detachably mounting a presser foot
US9598805B2 (en) * 2015-03-27 2017-03-21 Janome Sewing Machine Co., Ltd. Presser foot for sewing machine
US20190330776A1 (en) * 2018-04-27 2019-10-31 Brother Kogyo Kabushiki Kaisha Presser foot device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854433A (en) * 1972-05-04 1974-12-17 Janome Sewing Machine Co Ltd Zipper foot for use with sewing machine
US3973508A (en) * 1973-12-11 1976-08-10 Janome Sewing Machine Co. Ltd. Sewing machine zipper foot
US4548145A (en) * 1984-07-27 1985-10-22 Kohshin Seimitsu Kikai Kabushiki Gaisha Holder for detachably mounting a presser foot
US9598805B2 (en) * 2015-03-27 2017-03-21 Janome Sewing Machine Co., Ltd. Presser foot for sewing machine
US20190330776A1 (en) * 2018-04-27 2019-10-31 Brother Kogyo Kabushiki Kaisha Presser foot device
US10876236B2 (en) * 2018-04-27 2020-12-29 Brother Kogyo Kabushiki Kaisha Presser foot device

Also Published As

Publication number Publication date
GB1364963A (en) 1974-08-29
JPS48112549U (enrdf_load_stackoverflow) 1973-12-24
JPS5218213Y2 (enrdf_load_stackoverflow) 1977-04-25
CH547379A (de) 1974-03-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SSMC INC., A CORP. OF DE, CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SINGER COMPANY, THE;REEL/FRAME:005041/0077

Effective date: 19881202