US3217678A - Shuttle device having a rotating hook for a sewing machine - Google Patents

Shuttle device having a rotating hook for a sewing machine Download PDF

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Publication number
US3217678A
US3217678A US306738A US30673863A US3217678A US 3217678 A US3217678 A US 3217678A US 306738 A US306738 A US 306738A US 30673863 A US30673863 A US 30673863A US 3217678 A US3217678 A US 3217678A
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US
United States
Prior art keywords
hook
casing
escapement
axis
spool
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
US306738A
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English (en)
Inventor
Fresard Marcel
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
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Filing date
Publication date
Application filed by Mefina SA filed Critical Mefina SA
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Publication of US3217678A publication Critical patent/US3217678A/en
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
    • D05B57/10—Shuttles
    • D05B57/14—Shuttles with rotary hooks
    • D05B57/143—Vertical axis type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
    • 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

Definitions

  • the present invention concerns a shuttle device having a rotating hook for a sewing machine, comprising a rotatable race secured to a vertical driving shaft, the hook being formed on the edge of this race which presents interiorly a support member for a spool adapted to pay out a lower thread, a loop of an upper thread being adapted to be drawn by a needle which is displaced parallel to the axis of the race and tangentially to the hook, an abutment mechanism retaining the spool support in position against any entrainment by the hook, this mechanism comprising two abutments carried by the spool support and disposed on both sides of the path of the needle, an escapement oscillating under the action of a rotatable cam presenting two beaks co-operating respectively with two abutments, so that one of the beaks is always in contact with one of the abutments, the oscillation of this escapement permitting a space to be left alternatively between each pair of cooperating beaks and abutments, for
  • a shuttle device is characterized in that the oscillating axis of the escapement is parallel to that of the axis of rotation of the hook, the control cam of the escapement being secured to the driving shaft of the hook and disposed below the race, the escapement comprising a plate guided horizontally below the race and against which the cam operates, this plate presenting two upwardly folded extensions and each end of which constitutes one of the two beaks, the oscillating axis of the escapement being situated in a central position between the two beaks, this axis being parallel to that of the cam, in such a manner as to avoid all oscillating movements of the spool support.
  • FIGURE 1 is a front elevation of the shuttle device, constructed in accordance with the invention, viewed in the direction of use of the sewing machine;
  • FIGURE 2 is a corresponding side elevation
  • FIGURE 3 is a plan of the device in a particular functioning position
  • FIGURE 4 is a fragmentary plan similar to FIGURE 3, showing the device in a different functioning position;
  • FIGURE 5 is a plan view of the control mechanism for the escapement.
  • a shuttle device having a rotating hook for a sewing machine comprises a rotatable outer casing 1 with a hook 3,217,678 Patented Nov. 16, 1965 7 thereon secured to a driving shaft 2 journalled in a bearing (not shown) of a frame 3 of the sewing machine.
  • the axis of rotation of this shaft 2 is vertical.
  • a pinion 4 is machined on the lower part of this shaft 2. This pinion meshes with a tangent screw 5 driven by a horizontal shaft 6 disposed longitudinally in the lower part of the sewing machine, respectively in the free arm thereof.
  • a member 8 is disposed inside this casing 1.
  • This member 8 is adapted to serve as a support for a spool 9 adapted to pay out a lower thread 10.
  • the spool is mounted by well known means in the casing as described in US. Patent No. 2,673,541.
  • a loop of an upper thread 11 is adapted to be drawn by a needle 12 of the machine, which needle is displaced parallel to the axis of rotation of the casing 1 and tangentially to the hook 7.
  • An abutment mechanism is adapted to retain the spool support 8 in position against any rotating movement by the hook 7 or by the casing 1.
  • the mechanism comprises two abutments 13 and 14 respectively formed on a plate 15 connected by screws 16 on an upper capsule 17 of the spool support 8. These two abutments 13, 14 must be disposed on both sides of the path of the needle 12.
  • the task which consists in maintaining these two abutments 13 and 14 in a determined position falls to an escapement 18 presenting two retaining beaks 19 and 20 respectively.
  • the beak 19 is adapted to co-operate with the abutment 13 (FIGURE 3) whilst the beak 20 is adapted to co-operate with the abutment 14 (FIGURE 4).
  • This escapement 18 is constituted by a plate presenting a main member 21 guided horizontally below the casing 1.
  • This plate 21 oscillates along an axis 22 carried by a plate 23, generally called a saddle.
  • the plate 21 has an opening 24 therein with two parallel edges 25 and 26.
  • a control cam 28 constituted in this particular case, by an eccentric, is engaged in the opening 24, in such a manner as to be found in contact with the two parallel edges 25 and 26.
  • This eccentric 27 is, preferably constituted in a synthetic material having a low coefficient of friction, such as nylon for example; it is secured to the shaft 2 which moves it simultaneously with the race and the hook 7.
  • the guiding of the plate 21 is effective thanks to a guide 28, preferably of synthetic material having a low coefficient of friction.
  • the oscillating axis 22 of the escapement 18 is situated in a central position between the two beaks 19 and 20, and this axis being parallel to that of the eccentric 27.
  • the guide 28 is disposed for guiding the part of the plate 21 which is furthest away from the oscillating axis 22.
  • guide plates 29, preferably likewise of synthetic material having a low coefiicient of friction are fixed in an intermediate position on the plate 21 between the guide 28 and the oscillating axis 22 in the proximity of the parallel edges 25 and 26 of the opening 24. These plates 29 rest on the plate or saddle 23 and slide back and forth thereon, as shown in FIG. 1.
  • the beaks 19 and 20 are formed at the ends of two upwardly folded extensions 30 and 31 of the plate 21.
  • the hook 7 effects two complete revolutions for each stitch, that is to say for each prick of the needle 12. This is well known and is described in US. Patent No. 2,505,523. At the beginning of the prick of the needle 12, this draws the upper thread 11 between the abutments 13 and 14 up to a level lower than that of the hook 7. At the moment where the lifting of the needle starts (FIGURE 1), one of the strands of the upper thread 11 forms a loop 32 which appears in the path of the hook '7 which takes it up as soon as it arrives at its height. Subsequently, the hook 7 drives this loop around the spool 9 and thus around the lower thread 10.
  • the parts of the device sensitive to wear being, preferably, made in synthetic material having a low coefficient of friction, no Wear of the device is noted after long use of the machine.
  • a shuttle device comprising a vertical driving hook shaft, a rotatable casing having a raceway secured to said shaft, a hook formed on an edge of said casing, a spool support member arranged interiorly of said casing for supporting said spool which spool is removably disposed in said casing, a control cam secured to said hook shaft below said casing, said needle reciprocating in a path parallel to the axis of said casing and tangentially to said hook and forming depending loops at predetermined intervals, and an abutment mechanism, retaining said spool support member in position against any movement by said hook, comprising two abutments carried by said spool support member, one disposed on each side of the path of said needle and an oscillating escapement comprising a plate for actuation by said control cam and means
  • cam actuated plate has an opening formed therein with two parallel edges, said control cam being an eccentric disposed in said opening and in contact with said two parallel edges.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US306738A 1962-09-14 1963-09-05 Shuttle device having a rotating hook for a sewing machine Expired - Lifetime US3217678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1094362A CH379896A (fr) 1962-09-14 1962-09-14 Dispositif de navette à crochet rotatif pour machine à coudre

Publications (1)

Publication Number Publication Date
US3217678A true US3217678A (en) 1965-11-16

Family

ID=4368452

Family Applications (1)

Application Number Title Priority Date Filing Date
US306738A Expired - Lifetime US3217678A (en) 1962-09-14 1963-09-05 Shuttle device having a rotating hook for a sewing machine

Country Status (9)

Country Link
US (1) US3217678A (xx)
AT (1) AT248216B (xx)
BE (2) BE489310A (xx)
CH (1) CH379896A (xx)
DE (1) DE1485221C3 (xx)
DK (1) DK103275C (xx)
ES (1) ES291150A1 (xx)
GB (1) GB977666A (xx)
NL (2) NL146890B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108095A (en) * 1975-12-20 1978-08-22 Maruzen Sewing Machine Co., Ltd. Rotary loop taker for sewing machine
US4196684A (en) * 1977-06-21 1980-04-08 Maruzen Sewing Machine Co., Ltd. Shuttle device for sewing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211485A (ja) * 1983-05-14 1984-11-30 株式会社広瀬製作所 本縫ミシンのかま止め装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219470A (en) * 1937-11-26 1940-10-29 Reece Button Hole Machine Co Shuttle mechanism
US2236830A (en) * 1939-10-14 1941-04-01 Singer Mfg Co Loop-taker mechanism for sewing machines
US2505523A (en) * 1945-04-18 1950-04-25 Mefina S A Beiningen Retaining device for rotary hooks
CH289962A (fr) * 1952-09-05 1953-04-15 Mefina Sa Navette pour machine à coudre.
US2673541A (en) * 1951-06-01 1954-03-30 New Process Gear Corp Rotary shuttle for sewing machines
US2822773A (en) * 1954-10-22 1958-02-11 Singer Mfg Co Shuttle mechanisms for sewing machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219470A (en) * 1937-11-26 1940-10-29 Reece Button Hole Machine Co Shuttle mechanism
US2236830A (en) * 1939-10-14 1941-04-01 Singer Mfg Co Loop-taker mechanism for sewing machines
US2505523A (en) * 1945-04-18 1950-04-25 Mefina S A Beiningen Retaining device for rotary hooks
US2673541A (en) * 1951-06-01 1954-03-30 New Process Gear Corp Rotary shuttle for sewing machines
CH289962A (fr) * 1952-09-05 1953-04-15 Mefina Sa Navette pour machine à coudre.
US2822773A (en) * 1954-10-22 1958-02-11 Singer Mfg Co Shuttle mechanisms for sewing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108095A (en) * 1975-12-20 1978-08-22 Maruzen Sewing Machine Co., Ltd. Rotary loop taker for sewing machine
US4196684A (en) * 1977-06-21 1980-04-08 Maruzen Sewing Machine Co., Ltd. Shuttle device for sewing machine

Also Published As

Publication number Publication date
NL297320A (xx)
DE1485221B2 (de) 1973-09-06
NL146890B (nl) 1975-08-15
DE1485221C3 (de) 1974-05-16
AT248216B (de) 1966-07-25
CH379896A (fr) 1964-07-15
GB977666A (en) 1964-12-09
DE1485221A1 (de) 1969-06-04
ES291150A1 (es) 1964-02-01
BE489310A (xx)
BE636056A (xx)
DK103275C (da) 1965-12-06

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