US3308777A - Rotary hook sewing machine - Google Patents

Rotary hook sewing machine Download PDF

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Publication number
US3308777A
US3308777A US338887A US33888764A US3308777A US 3308777 A US3308777 A US 3308777A US 338887 A US338887 A US 338887A US 33888764 A US33888764 A US 33888764A US 3308777 A US3308777 A US 3308777A
Authority
US
United States
Prior art keywords
sewing machine
spool
rotary hook
finger
head
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
US338887A
Other languages
English (en)
Inventor
Gianinazzi Rolando
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 US3308777A publication Critical patent/US3308777A/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
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices
    • D05B57/265—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices for looptakers with vertical axis
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith

Definitions

  • an extracting device for the spool is fixed to the head of the machine and is adapted to permit the retraction of the spool from its housing.
  • FIGURE 1 is a front view in elevation, with partial section, of a sewing machine in accordance with the invention
  • FIGURE 2 is a detailed view, on an enlarged scale.
  • FIGURE 3 is a partial view, in plan, showing the position of the spool of this sewing machine.
  • This sewing machine comprises a frame formed of an upper part 1, terminating in an overhanging head 2, and a work supporting lower part 3 or free arm.
  • This upper part 1 and lower part 3 are connected by a column, not shown.
  • the needle bar 4 slides vertically in this head 1.
  • this needle bar 4 slides in bearings 5 and 6 forming part of a movable cradle 7.
  • This movable cradle 7 is adapted to oscillate around a vertical axle 8 fixed in the upper frame 1 of the machine as illustrated and described in US. Patent No. 2,682,845.
  • a circlip 9 engaged in a throat 10 of the vertical axle 8 ensures the axial position of the cradle 7 on this axle 8.
  • the head 2 of the upper frame 1 likewise carries the material presser bar 11 adapted to receive the different types of presser foot, not shown.
  • the spool 16 is arranged in the central part of this rotating hook 12 and retained in place by the upper cap 17.
  • This spool 16 presents a central bore, or usual barrel 18.
  • the free arm 3 is closed in its upper part by a cover 19 in which is made an opening for a needle hole plate, not shown.
  • the vertical axle 8 of this sewing machine is tubular and is adapted to serve, in part, to house an extracting device for the spool 16.
  • This device which is fixed to the head 2 of the sewing machine, comprises a finger 20 preferably in soft plastics material.
  • This finger 20 presaid lower part and 3,308,777 Patented Mar. 14, 1967 sents an enlarged part 21 adapted to facilitate the holding thereof.
  • It is, moreover, provided with an extension 22 adapted to be engaged in the bore 23 of the tubular axle 8.
  • This bore 23 likewise serves for housing a coil spring 24, the upper end 25 of which is fixed around a screw 26 retained by its head 27 at the upper end of the tubular axle 8.
  • the lower end 28 of the spring 24 is forced around the extension 22.
  • This spring 24 constitutes, in effect, a return spring adapted to retract the finger 21) into the retracted position of non-use.
  • this presents two intersecting transverse slots 29.
  • the user of the machine takes the enlarged part 21 between his fingers and pulls the finger 2d downwardly, against the action of the spring 24, to engage it in the bore 18 of the spool 16.
  • This engagement is effected with a light friction, the finger 20 being of slightly larger section than the bore 18.
  • the spring 24 draws the finger 20 and the spool 16 together upwardly.
  • the spool 16 can then be easily disengaged from the finger 20, either for replacing by a spool carrying another type of thread or to recharge with a certain quantity of thread.
  • a rotary hook sewing machine including an overhanging machine head, a vertical axle carried by the head, a cradle adapted to oscillate around said axle, a needle bar vertically slidable in the cradle, a work supporting lower part, a vertical axis rotary hook disposed Within presenting a housing adapted to contain a spool to provide a lower thread supply, finger means of soft plastic material displaceably mounted on the head for engaging in a central bore of the spool to retract the spool from the hook housing, and coil spring means urging said finger means into an inoperative position relative to the head, said vertical axle being tubular and housing said spring means, said finger means presenting an extension partially engaged in said tubular axle when in said inoperative position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US338887A 1963-06-26 1964-01-20 Rotary hook sewing machine Expired - Lifetime US3308777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH807063A CH391438A (fr) 1963-06-26 1963-06-26 Machine à coudre

Publications (1)

Publication Number Publication Date
US3308777A true US3308777A (en) 1967-03-14

Family

ID=4334670

Family Applications (1)

Application Number Title Priority Date Filing Date
US338887A Expired - Lifetime US3308777A (en) 1963-06-26 1964-01-20 Rotary hook sewing machine

Country Status (9)

Country Link
US (1) US3308777A (xx)
AT (1) AT253339B (xx)
BE (1) BE644796A (xx)
BR (1) BR6458024D0 (xx)
CH (1) CH391438A (xx)
DK (1) DK108354C (xx)
FR (1) FR1383666A (xx)
GB (1) GB986261A (xx)
NL (1) NL151457B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7552690B1 (en) * 2003-09-24 2009-06-30 Roslyn Judith Chancey Bobbin extractor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643411B (zh) * 2013-11-29 2015-01-14 宁波舒普机电科技有限公司 自动换梭装置的取梭芯机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US114294A (en) * 1871-05-02 Improvement in sewing-machines
US906987A (en) * 1904-12-01 1908-12-15 Edmund Albert Angus Shuttle-replenishing mechanism.
US2438459A (en) * 1945-06-16 1948-03-23 Richard Walsh Mcgann Sewing machine
US2690725A (en) * 1951-08-09 1954-10-05 Pfaff Ag G M Means for automatically exchanging bobbins in sewing machines
US3125973A (en) * 1960-05-28 1964-03-24 Arrangement in sewing machines for exchanging bobbins

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US114294A (en) * 1871-05-02 Improvement in sewing-machines
US906987A (en) * 1904-12-01 1908-12-15 Edmund Albert Angus Shuttle-replenishing mechanism.
US2438459A (en) * 1945-06-16 1948-03-23 Richard Walsh Mcgann Sewing machine
US2690725A (en) * 1951-08-09 1954-10-05 Pfaff Ag G M Means for automatically exchanging bobbins in sewing machines
US3125973A (en) * 1960-05-28 1964-03-24 Arrangement in sewing machines for exchanging bobbins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7552690B1 (en) * 2003-09-24 2009-06-30 Roslyn Judith Chancey Bobbin extractor

Also Published As

Publication number Publication date
NL151457B (nl) 1976-11-15
AT253339B (de) 1967-04-10
GB986261A (en) 1965-03-17
DE1485228A1 (de) 1969-05-14
BE644796A (xx)
NL6403429A (xx) 1964-12-28
CH391438A (fr) 1965-04-30
FR1383666A (fr) 1964-12-24
BR6458024D0 (pt) 1973-02-22
DK108354C (da) 1967-11-20

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