US3726243A - Threading feature for roller type presser foot - Google Patents

Threading feature for roller type presser foot Download PDF

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Publication number
US3726243A
US3726243A US00171532A US3726243DA US3726243A US 3726243 A US3726243 A US 3726243A US 00171532 A US00171532 A US 00171532A US 3726243D A US3726243D A US 3726243DA US 3726243 A US3726243 A US 3726243A
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United States
Prior art keywords
axle
roller
support
presser foot
rounded end
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Expired - Lifetime
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US00171532A
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English (en)
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R Howell
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet
    • D05B29/10—Presser feet with rollers

Definitions

  • One of the supports has a horizon- [21] Appl. No.: 171,532 tally convex inner surface which intersects and forms a cleft with a surface portion of rounded end on the near axle.
  • the roller is easily installed and removed by exerting a force on it causing the rounded end of the axle to slide along said curved support surface.
  • a thread from a needle positioned behind the roller may be brought forwardly over the roller, placed into said cleft and then [56] References Cited moved downwardly and swung outwardly below the support, and then be moved rearwardly of the foot. 112/235 The thread is cammed rearwardly through the cleft 2/235 and into the channel and then out from the channel and around the rounded end of said axle into a position behind the roller.
  • This invention relates to a roller type presser foot, and in particular to such a foot constructed so that the needle thread can be easily moved between one end of a forward presser roller and the support for such end, around such one end of the roller, and into a needle region rearwardly of the roller, and to a construction enabling easy installation and removal of the roller from its mounting means.
  • the support for one end of a presser roller located forwardly of a needle is provided with a horizontally curved lead in surface and an axle socket, and the near end of the roller is provided with a live axle which is received by and journaled in said socket.
  • axle includes a rounded end surface which intersects and forms a generally vertically extending cleft with the curved inner surface of said support.
  • the end supports for the roller are forwardly projecting tines on a body portion of a foot component. These tines are flexible enough so that they will spring apart when the rounded axle end of the roller is moved horizontally through an arc and along the curved inner surface of the support.
  • the axle receiving opening makes a substantially right angle intersection with the inner surface of the support both above and below the axle so that shoulders exist on the support both above and below the axle for resisting removal of the roller when pressed upon in the vertical direction.
  • a substantially vertical channel is formed in the inner surface of the support at a location endwise of the roller and contiguous the rounded end of the axle.
  • the rounded end of the axle is of such a length and the channel is of such a depth that a thread extending from the needle located rearwardly of the roller can be brought over the roller and placed into the cleft, then swung laterally outwardly below the support, and then moved rearwardly through the cleft, into the channel, and then from the channel around the end of the axle into the space rearwardly of the roller, by a single, continuous, easy motion. It is common sewing practice to move the thread behind the presser roller so as to correctly position the thread before start of the sewing operation.
  • FIG. 1 is a perspective view looking from above and towards the left side and front end of one embodiment of the invention, showing a presser foot component in full line and showing the lower portion of a mounting shank in broken line;
  • FIG. 2 is a top plan view of the foot component
  • FIG. 3 is a top plan view, on an enlarged scale, of the roller supporting front end portion of the foot component, showing the position of the needle thread at the start of the threading operation made possible by the present invention
  • FIG. 4 is a view similar to FIG. 3, but showing the thread advanced into the vertical support recess at the end of the roller axle, and showing a portion of the support in section;
  • FIG. 5 is a view similar to FIGS. 3 and 4, but showing the thread advanced past the axle end portion of the roller, and showing portions of both supports in section;
  • FIG. 6 is a fragmentary front end elevational view of the left end portion ofthe foot component, showing the thread substantially in the position it occupies in FIG. 3.
  • FIG. 7 is a view similar to FIG. 6, but showing the thread substantially in the position it occupies in FIG. 4, and also showing a portion of the left mounting tine in vertical section, the section being taken substantially at the valley of. a vertical channel formed in the inner surface of the mounting tine in the region of the axle receiving hole;
  • FIG. 8 is a view similar to FIG. 7, but showing the thread substantially in the position it occupies in FIG.
  • FIG. 9 is a fragmentary side elevational view looking towards the left front corner of the foot component.
  • FIG. 10 is a view similar to FIG. 9, but showing a modified form of opening or socket for receiving the left end roller axle.
  • the presser foot assembly comprises a foot component 10 and a mounting shank 12.
  • the foot component 10 includes a transverse slidebar 14 which is received in, and forms a slide joint with, a transverse slideway 16 formed at the lower end of the mounting shank 12.
  • a transverse slidebar 14 which is received in, and forms a slide joint with, a transverse slideway 16 formed at the lower end of the mounting shank 12.
  • the present invention relates to a type of presser foot having a roller 18 at its forward end.
  • a roller of a type having a central guide portion for zipper teeth chains is illustrated.
  • the invention is applicable to all types of presser rollers.
  • Relatively wide, cylindrical presser surfaces 20 are provided on opposite sides of the zipper tooth guide avenues.
  • the presser surfaces 20 of my roller 18 rest on the material traveling through the needle region and exert a downward force on the material being sewed, urging it against an advancing mechanism (not shown) located below the material.
  • a pair of mounting tines 22, 22, extend forwardly in opposed parallelism at the forward end of the foot component 10.
  • the presser roller 18 is received between these tines 22, 24, and a needle receiving region 26 is located rearwardly of the central portion of the roller 18. During the sewing operation the needle N reciprocates up and down within the region 26.
  • a pair of axially aligned openings or sockets 28, 30 are provided in the tines 22, 24 for receiving and journaling short live axles or trunions 32, 34, respectively, at the ends of roller 18.
  • the axle 32 is slightly longer than the axle 34 and is adapted to be the first axle set within its socket and the last axle removed from its socket during installation and removal of the roller 18.
  • the extreme end portion of axle 34 substantially follows an arcuate path 36 during installation and removal of the roller 18.
  • the inner surface or check of tine 24 is horizontally curved at 38 and this curve 38 extends inwardly substantially to the innermost horizontal boundary of the socket 30.
  • the foot component is made from a suitable structural plastic which provides some flexibility in the tines 22, 24 so that they will spring apart slightly when the rounded end of axle 34 is pressing against the curved surface 38.
  • the tines 22, 24 have the ability to flex outwardly laterally of the foot component 10 because they are relatively narrow where they join the main part of the body 10. However, they are very deep where they join the main body 10 and they offer stiff resistance to a force tending to make them roll sideways.
  • the sockets 28, 30 make substantially right angle corners with the inner side surfaces of the tines 22, 24 in the vertical direction (see FIGS. 6-8). Hence, there is no curved surface present for camming the rounded end of axle 34 in and out of the socket 32 when the roller 18 is forced in the vertical direction.
  • the substantially right angle intersection of the surfaces in question also means that the tines must be sprung apart a further amount to permit installation or removal of the roller 18 by forcing it vertically. Any such vertical force would tend to make at least the tine 24 tend to roll, and as explained above, the tine 24 has good resistance to rolling.
  • the roller 18 is at least not easily removable by a vertical force.
  • a vertical V-cut or groove 40 (FIGS. 3 and 4) is provided in the inner side face or cheek of the tine 24. As best shown by FIG. 3,
  • the valley region of the groove 40 extends into the tine 24 past the rounded end of the axle 34.
  • the curved surface 38 intersects a portion of the rounded end of axle 34 and forms a vertically extending cleft therewith.
  • the thread T is threaded into the needle region 26 of the foot component 10 in the following manner:
  • the thread T below the needle N is placed between the surface 38 of tine 24 and the side surface 42 of the roller 18, and the thread T is moved downwardly and laterally outwardly below support 24 and is drawn rearwardly of the foot component 10 in the direction of the arrow 44 (FIG. 3), to place the thread T in the above-described cleft defined by and between the rounded end surface of axle 34 and the adjacent portion of curved cheek surface 38.
  • Further movement of the thread T in the direction of arrow 44 (FIG. 4) causes the thread to slide along the curved end surface of axle 34 until it is wholly within the vertical groove 40. This movement of the thread T is aided rather than prevented by the inner cheek surface 38.
  • FIG. 10 relates to a modified form of foot component 10' in which the socket opening 30 is replaced by a downwardly opening socket having an entrance portion defined between points A-A which is slightly narrower than the full diameter of the axle 34.
  • the roller 18 is installed and removed in the direction of the slot, between the points A-A.
  • a vertical V-groove and a generally horizontally curved lead in surface similar to cheek surface 38 may be added to the inner side of this tine 24 so that threading may be accomplished in the manner described above.
  • a presser foot of a type including a pair of laterally spaced apart supports, a presser roller extending between said supports, and axle-socket means at each end of the roller mounting said roller onto said supports for rotation therebetween, said axle-socket means comprising a live axle at one end of said roller, said axle having a rounded end, and a receiving socket in the support for such axle, such support also including an inner lead in surface which forms a cleft with a portion of said rounded end, said inner surface including a channel therein extending in substantially the same direction as said cleft and opening against a portion of the rounded end of the axle, such axle being short enough and said channel being deep enough that the axle is normally retained within the opening therefor, but a thread may be brought from a location above the roller and placed into said cleft and be brought under said support, then easily moved rearwardly across the rounded end of the axle into the channel, and then moved further rearwardly from said channel and said channel and said cleft are generally vertically oriented.
  • a presser foot according to claim 4, wherein said channel is of such a depth that it extends into the support beyond the normal position of the rounded end of the axle.
  • a presser foot according to claim 1 wherein said supports are flexible enough to spring apart slightly so that the roller can be removed by it being pressed upon near the end thereof close to said axle in a direction generally along the inner surface of said support, and during installation and removal of the roller the rounded end of said axle slides along said inner lead in surface.
  • a presser foot of the type including a pair of laterally spaced apart supports a presser roller between said supports having pivot and swing ends, and axlesocket means at each end of the roller, mounting said roller onto said supports for rotation therebetween, said axle-socket means including an axle at the swing end of the roller having a rounded end, and with the support for such axle including an inner lead in surface which slopes laterally outwardly as it extends forwardly of the presser foot from the vicinity of the axle, said supports being flexible enough to spring apart slightly to permit installation and removal of the roller when the pivot end of the roller is on its support and the swing end is ressed upon in a direction causin sliding of the roun ed end of the swing end axle a ong the inner lead in surface of its support.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
US00171532A 1971-08-13 1971-08-13 Threading feature for roller type presser foot Expired - Lifetime US3726243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17153271A 1971-08-13 1971-08-13

Publications (1)

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US3726243A true US3726243A (en) 1973-04-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00171532A Expired - Lifetime US3726243A (en) 1971-08-13 1971-08-13 Threading feature for roller type presser foot

Country Status (4)

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US (1) US3726243A (enrdf_load_stackoverflow)
JP (1) JPS5215018B2 (enrdf_load_stackoverflow)
CA (1) CA974405A (enrdf_load_stackoverflow)
GB (2) GB1395361A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858539A (en) * 1973-09-26 1975-01-07 Textron Inc Slide fastener presser foot assembly
USD243555S (en) 1974-08-30 1977-03-01 Drew Donald G Slide fastener presser foot
US4278039A (en) * 1978-08-11 1981-07-14 Janome Sewing Machine Industry Co. Detachable presser foot
US4848257A (en) * 1987-11-30 1989-07-18 Lee Kun Jung Presser foot with fabric guide and rolling element
USD515594S1 (en) * 2004-11-12 2006-02-21 Kawaguchi Co., Ltd. Presser foot for sewing machine
CN105442197A (zh) * 2014-09-29 2016-03-30 启翔股份有限公司 电子模板缝纫机的拉料机构
USD835686S1 (en) * 2017-09-22 2018-12-11 Clover Mfg. Co., Ltd. Presser foot with safety guard for sewing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363148A (en) * 1976-11-15 1978-06-06 Moon Star Chemical Corp Sewing machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342151A (en) * 1965-07-28 1967-09-19 Robert B Howell Universal presser foot attachment
US3511200A (en) * 1968-10-02 1970-05-12 Robert B Howell Presser foot assemblies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342151A (en) * 1965-07-28 1967-09-19 Robert B Howell Universal presser foot attachment
US3511200A (en) * 1968-10-02 1970-05-12 Robert B Howell Presser foot assemblies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858539A (en) * 1973-09-26 1975-01-07 Textron Inc Slide fastener presser foot assembly
USD243555S (en) 1974-08-30 1977-03-01 Drew Donald G Slide fastener presser foot
US4278039A (en) * 1978-08-11 1981-07-14 Janome Sewing Machine Industry Co. Detachable presser foot
US4848257A (en) * 1987-11-30 1989-07-18 Lee Kun Jung Presser foot with fabric guide and rolling element
USD515594S1 (en) * 2004-11-12 2006-02-21 Kawaguchi Co., Ltd. Presser foot for sewing machine
CN105442197A (zh) * 2014-09-29 2016-03-30 启翔股份有限公司 电子模板缝纫机的拉料机构
USD835686S1 (en) * 2017-09-22 2018-12-11 Clover Mfg. Co., Ltd. Presser foot with safety guard for sewing machine

Also Published As

Publication number Publication date
AU4546172A (en) 1974-02-14
GB1395361A (en) 1975-05-29
JPS4829554A (enrdf_load_stackoverflow) 1973-04-19
GB1395362A (en) 1975-05-29
CA974405A (en) 1975-09-16
JPS5215018B2 (enrdf_load_stackoverflow) 1977-04-26

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