US2919668A - Articulated presser foot for sewing machines - Google Patents

Articulated presser foot for sewing machines Download PDF

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Publication number
US2919668A
US2919668A US691614A US69161457A US2919668A US 2919668 A US2919668 A US 2919668A US 691614 A US691614 A US 691614A US 69161457 A US69161457 A US 69161457A US 2919668 A US2919668 A US 2919668A
Authority
US
United States
Prior art keywords
shank
sole
foot
pin
lever
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
US691614A
Other languages
English (en)
Inventor
Adam Hermann
Neumann Friedrich
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.)
PHOENIX NAHMASCHINEN A G BAER
Phoenix Nahmaschinen A-G Baer & Rempel
Original Assignee
PHOENIX NAHMASCHINEN A G BAER
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 PHOENIX NAHMASCHINEN A G BAER filed Critical PHOENIX NAHMASCHINEN A G BAER
Application granted granted Critical
Publication of US2919668A publication Critical patent/US2919668A/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
    • D05B29/00—Pressers; Presser feet

Definitions

  • Sewing machines having a presser foot which is either made of one piece or which has a sole which is pivotally connected by means of a pin to the shank portion of the foot.
  • the rigidly constructed press er foot or the foot having the sole with a pivot joint is secured by means of a screw to the lower end of the presser bar of the sewing machine.
  • the guiding of the material on the base plate of the machine must not be impeded in any manner in spite of such manner of linking the foot sole while the sole is maintained in secured position on the shank without inadmissible tolerance and also without jamming effect on the shank.
  • the invention provides first of all for an adjustable catch lever which is adjustable by means of an operating member which for the locked position encompasses the pivot pin provided in the sole of the foot with a throat portion.
  • a finger lever pivotally mounted in the shank portion of the foot and to which is linked a portion of the catch lever serves as the operating or manipulating member.
  • the hook shaped throat of this catch member or lever operatively engages the mouth of the shank member by encompassing the joint or connecting pin of the foot sole member.
  • This operating device can be formed as a self locking knee joint or toggle joint.
  • this operating device can be constructed in such a space conserving manner that no member needs to project laterally of the shank portion.
  • the presser foot retains its Patented Jan. 5, v1960 ice entirely smooth lateral walls and thus does not impede the guiding of the material in any manner.
  • Interchangeable foot soles are known per se in connection with attachment devices which serve the purpose of adapting a straight sewing machine as a zig-zag sewing machine.
  • attachment devices which serve the purpose of adapting a straight sewing machine as a zig-zag sewing machine.
  • the articulated linking of the foot sole with the attachment device is so cumbersome that the exchanging of the feet can hardly be expected of a housewife.
  • the linking of the foot is undertaken in such a manner that faultless guiding of the material is not possible.
  • FIG. 1 is a front perspective view of the presser foot shank with supporting means for the presser foot sole in opened condition
  • Fig. 2 is a side elevational view showing the presser foot sole pivotally mounted on the shank
  • Fig. 3 is a perspective view of the presser foot sole with connecting pin for the supporting means taken from the side and top,
  • Fig. 4 is a sectional view taken along line IVIV in Fig. 2, and
  • Fig. 5 is a sectional view drawn to a largerscale and taken along line VV in Fig. l.
  • an apertured lug 2 is provided which is slotted and in which the finger or manipulating lever 4 is retained by means of a connecting pin 3 which is tightly mounted in the aperture of the right hand portion of the lug in which it is rotatable by means of a screw driver during initial adjustment.
  • the finger lever 4 can be pivotally moved on this support or journalling arrangement.
  • the catch member 6 is pivotally connected by means of a pin 5 to the finger lever 4 and is hook shaped at its forward end which reaches with its throat 7 through the slot 8 of the shank portion 1 for the purpose of encompassing the joint pin 9 which is supported .between the upstanding flange portions 10a of the foot sole 10.
  • the shank portion 1 likewise presents a throat or mouth 11 at its forward end to receive the joint pin 9.
  • the sole When placing the foot sole 10 into the shank portion the sole is placed into the opened mouth portion 11 by means of the joint pin 9.
  • Coupling link 6 rests with its right hand end on pin 9.
  • the finger lever 4 is flung upwardly.
  • Fig. 2 indicates how lever 6 with pin 5 is pulled to the left and upwardly around pivot pin 3, slightly above dead center position.
  • the throat 7 firmly places itself around the joint pin 9 ahead of throat l1 and securely holds the sole 10.
  • the pin 3, the pin 5 and the abutment formed by the throat 11 are arranged in such a relationship to one another that the locking position of the finger lever 4 provides a toggle joint effect.
  • the pin 3 for this purpose is provided with an offset or eccentric portion which can be moved in order to make it possible that in initially adjusting the device for the tightened position of the toggle joint the support of the joint pin 9 of the foot sole 10 is insured without excessive tolerance but also without the possibility of a jamming eliect.
  • the mounting of the shank 1 onto the material presser bar 13 may be accomplished in the usual manner by means of the shank screw 12. However, it is no longer necessary in connection with the exchange possibility which has thus been made possible to remove the shank portion 1 from the presser bar 13.
  • the exchanging of the foot sole which is placed into the mouth 11 from the front end is accomplished in a substantially more convenient manner than heretofore the exchange of the entire foot together with the shank which has to be released from the presser bar due to the crowded space resulting from the presser bar by carefully swinging the shank laterally of the presser bar.
  • an abutment pin is provided which rests against the edge 15 of the shank 1.
  • a further pin 16 is provided in the shank in order to continuously retain the catch member 6 with its throat portion '7 in the range of the slot 8 of the shank member 1.
  • Presser foot for sewing machines comprising a shank member presenting a bottom portion, a rearward portion provided with a pivot pin and a forward end defining a mouth portion, a soie portion adapted to be pivotally mounted on said shank member and interlocking means comprising a coupling link movably mounted longitudinally of said bottom portion of said shank member, a finger lever pivotally mounted by means of said pivot pin on the rearward portion of said shank member and a joint pin operativel linking said finger lever to one end of said coupling link for movement about said pivot pin, said sole portion having a bearing joint pin extending transverse?
  • Presser foot for sewing machines comprising a shank member presenting a bottom portion, a rearward portion provided with a pivot pin and a forward end defining a mouth portion, a sole portion adapted to be pivotally mounted on said shank member and interlocking means comprising a coupling link movably mounted longitudinally of said bottom portion of said shank member, a finger lever pivotally mounted by means of said pivot pin on the rearward portion of said shank member and a joint pin operatively linking said finger lever to one end of said coupling link for movement about said pivot pin, said sole portion having a bearing joint pin extending transversely thereto adapted to engage said mouth portion and said catch lever having a throat portion at the free end thereof; said couplin link being movable with said finger lever to engage said bearing joint pin by means of said throat portion and retain said sole portion in en gagernent with said mouth portion for rocking movement about said bearing jo'int pin during the locked condition of the device, said finger lever and said one end of said coupling link each having a portion
  • Presser foot for sewing machines comprising a shank 4 member presenting a bottom portion, a rearward portion provided with a pivot pin and a forward end defining a mouth portion, a sole portion adapted to be pivotally moun ed on said shank member and interlocking means comprising a coupling link movably mounted longitudisaid bottom portion of said shank member, a ringer lever pivotally mounted by means of said pivot pin on the rearward portion of said shank member and a joint pin operatively linking said finger lever to one d of sa coupling link for movement about said pivot a s id sole portion having a bearing joint pin extending transversely thereto adapted to engage said mo'uth portion and said catch lever having a throat portion at the free end thereof; said coupling link being movable with finger lever to engage said bearing joint pin by means said throat portion and retain said sole portion in enment with said mouth portion for rocking movement L0 eilect a locking action on said finger lever and thereby said catch lever.
  • Presser foot for sewing machines comprising a shank member presenting a bottom portion, a rearward portion provided with a pivot pin and a forward end defining a mouth portion, a sole portion adapted to be pivo'tally mounted on said shank member and interlocking means comprising a coupling link movably mounted longitudinally of said bottom portion of said shank member, a finger lever pivotally mounted by means of said pivot pin on the rearward portion of said shank member and a joint pin operatively liking said finger lever to one end of said coupling link for movement about said pivot pin, said sole portion having a bearing joint pin extending transversely thereto adapted to engage said mouth portion and said atch lever having a throat portion at the free end thereof; said coupling link being movable with said finger lever to said bearing joint pin by means of said thro'at portion and retain said sole portion in engagement With said outh portion for rocking movement about said bearing joint pin during the locked condition of the device, said finger lever and said one end of said coupling link each g a portion offset at

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US691614A 1956-10-23 1957-10-22 Articulated presser foot for sewing machines Expired - Lifetime US2919668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE361968X 1956-10-23

Publications (1)

Publication Number Publication Date
US2919668A true US2919668A (en) 1960-01-05

Family

ID=6302803

Family Applications (1)

Application Number Title Priority Date Filing Date
US691614A Expired - Lifetime US2919668A (en) 1956-10-23 1957-10-22 Articulated presser foot for sewing machines

Country Status (3)

Country Link
US (1) US2919668A (de)
CH (1) CH361968A (de)
GB (1) GB827565A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143094A (en) * 1962-06-12 1964-08-04 Koshin Seimitsu Kikai Kabushik Pressure foot for sewing machine
US5749311A (en) * 1995-04-27 1998-05-12 The Singer Company N.V. Presser foot device for sewing machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE15596C (de) * F. W. MÜLLER in Berlin SO., Mariannenstr. 31/32 Einrichtung zur Befestigung von Hülfswerkzeugen an der Stoffdrückerstange bei Nähmaschinen
US918160A (en) * 1907-07-08 1909-04-13 Edward JOHNSON Garment-fastener.
US1901752A (en) * 1931-11-14 1933-03-14 Singer Mfg Co Sewing machine presser-foot
US2814266A (en) * 1955-05-23 1957-11-26 Wilbur A Marshall Presser foot for sewing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE15596C (de) * F. W. MÜLLER in Berlin SO., Mariannenstr. 31/32 Einrichtung zur Befestigung von Hülfswerkzeugen an der Stoffdrückerstange bei Nähmaschinen
US918160A (en) * 1907-07-08 1909-04-13 Edward JOHNSON Garment-fastener.
US1901752A (en) * 1931-11-14 1933-03-14 Singer Mfg Co Sewing machine presser-foot
US2814266A (en) * 1955-05-23 1957-11-26 Wilbur A Marshall Presser foot for sewing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143094A (en) * 1962-06-12 1964-08-04 Koshin Seimitsu Kikai Kabushik Pressure foot for sewing machine
US5749311A (en) * 1995-04-27 1998-05-12 The Singer Company N.V. Presser foot device for sewing machine

Also Published As

Publication number Publication date
CH361968A (de) 1962-05-15
GB827565A (en) 1960-02-10

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