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US3683833A - Sewing machine - Google Patents

Sewing machine Download PDF

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Publication number
US3683833A
US3683833A US32956A US3683833DA US3683833A US 3683833 A US3683833 A US 3683833A US 32956 A US32956 A US 32956A US 3683833D A US3683833D A US 3683833DA US 3683833 A US3683833 A US 3683833A
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US
United States
Prior art keywords
material supporting
supporting means
sewing machine
flaps
arm
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
US32956A
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English (en)
Inventor
Olindo Baruffa
Francis Plomb
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 US3683833A publication Critical patent/US3683833A/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
    • D05B77/00—Covers, or portable enclosures, for sewing machines

Definitions

  • SEWING MACHINE [72] Inventors: Olindo Baruffa; Francis Plomb, both of Aire-Geneva, Switzerland [73] Assignee: Mefina S.A., Fribourg, Switzerland [22] Filed: April 29, 1970 [21] Appl. No.: 32,956
  • ABSTRACT A sewing machine has a frame formed of a base, a
  • a material supporting means in the shape of a retractable shelf is connected to the base by a set of articulated parts, this shelf being displaceable in a vertical direction between an operative level in which it fits around the lower free arm at the working surface thereof, and a retracted level below the lower free arm to allow access thereto. Flaps are hinged to this shelf and can be folded against the frame to form a case therewith or can be folded down to allow access to the machine for operation thereof.
  • a sewing machine comprising a frame formed of a base, a column, a lower free arm having an upper working surface, an upper arm and a head. Flaps are hinged at least indirectly to said frame and are able to be applied against said frame to form a case therewith and to be folded down to allow access to said machine for operation thereof.
  • a retractable shelf is connected to said base by a set of articulated parts, said shelf being able to be displaced between two levels, an operative level in which it fits around said lower free arm at the upper working surface thereof, and a retracted level below said lower free arm to allow access thereto.
  • the flaps are preferably hinged to the shelf and the shelf is preferably displaceable in a direction normal to said working surface and without angular displacement in relation to said working surface.
  • FIG. 1 is a perspective view of a sewing machine'in the operative position and provided with an enlarged work shelf around the free arm.
  • FIG. 2 is a partial enlarged end view from left to right of FIG. 1 with the end flap upright, and a portion of the side panel cut away.
  • FIG. 3 is a further enlarged end view similar to FIG. 2 with the end panel cut away, and part of the base also cut away.
  • FIG. 4 is a perspective view of the sewing machine in packed position for transport or for storage.
  • FIG. 5 is an enlarged, partial side view of right hand bottom corner of FIG. 4 with portions thereof cut away.
  • FIG. 6 is a partial, enlarged end view from right to left of FIG. 4 with portions thereof cut away, the side panels in raised position and the side flaps folded down.
  • FIG. 7 is a partial enlarged end view similar to FIG. 6
  • the sewing machines shown both comprise a frame 1 fonned of a base 2, a column 3, a lower free arm 4, an upper arm 5 and a head 6.
  • These sewing machines additionally comprise a shelf 7 of a shape fittable around the free arm 4.
  • This shelf is mounted in a manner to be displaceable normal to its own plane (i.e. it remains parallel to the plane of the upper working surface of free arm 4) and can move between the level of the upper surface of the free arm 4 and a level substantially below the said arm 4, so as to clear the latter and leave it accessible.
  • the material supporting means or shelf 7 is connected to the base 2by a set of articulated parts.
  • the se of articulated parts comprises three panels, namely two longitudinal panels 8 and a transverse end panel 9.
  • Each panel 8 and 9 is itself formed of two portions, 10 and l1, l2 and 13 respectively, hinged to one another by pins 14 (FIG. 2) and 15 (FIG. 8), respectively.
  • panels 8 and 9 are foldable as shown in FIGS. 7 to 9. Sections 10 of panels 8 are articulated along the corresponding longitudinal sides of base 2 by hinges 17 i while sections 11 of panels 8 are articulated along the corresponding longitudinal sides of shelf 7 by hinges 18 (FIGS. 2 and 7).
  • panel 9 is articulated to the front edge of base 2 by hinges l9 and along the front edge of shelf 7 by hinges 20.
  • Three flaps 21, 22, 23 are also articulated along the three respective sides of shelf 7 by hinges 24, 25 and 26 respectively. These flaps 21, 22, and 23 serve to protect the machine in the storage position, as shown in FIG. 4. In fact, in this position, the flaps are folded against the upper arm 5 of the frame 1 in a manner to form a case therewith. Fixing means, for example clasps 27, enable the flaps 21, 22, and 23 to be held in the raised position.
  • spring means are provided to urge, on the one hand, shelf 7 to tend to lift it up and, on the other hand, hinges l7 and 19 of panels 8 and 9 to tend to fold them up. As shown in FIG. 5,. a
  • a lever 28 is pivotally mounted at 29 in the lower part of with portions thereof cut away, the side panels in shown in working position with the free arm accessible.
  • FIG. 11 is a perspective view of the sewing machine of FIG. 10in packed position.
  • FIG. 12 is a partial side view of the machine shown in FIG. 11 with one side flap removed to show the guiding mechanism of the shelf in raised position.
  • FIG. 13 is a plan view of a locking device of the guiding mechanism of FIG. 12.
  • This lever 28 is urged by a spring 30 hooked to the frame 1 so that the end 31 of the lever 28 exerts a pressure under the shelf 7.
  • a catch 32 is pivotally mounted at 33 in the lateral wall 34 of column 3 (see FIG. 7). The internal end 35 of this catch is located in the path of part 36 of lever 28 when the latter pivots against the action of the spring 30 during lowering of the shelf 7. Once this is in the lowered position, the catch 32 prevents return of the lever 28 to its initial position shown in FIG. 5. Such a return can only tions 10 and 12 of panels 8 and 9 respectively to induce folding of these panels into the position shown in FIG. 7.
  • a locking device is provided to enable locking of the panels 8 and 9 in the raised position.
  • this locking device comprises :a pivotally mounted axle 39 transversally located inside the column 3.
  • the median part of axle 39 carries a knurled knob 40 forming control means for rotation thereof.
  • Knob 40 protrudes from the column 3 through a rectangular opening 41 provided therein.
  • the ends of axle 39 carry arms 42 able to engage in grooves 43 provided in the end sides of portions 10 of panels 8 when they are in the raised position. Once arms 42 are engaged in these grooves 43, the panels 8 are thus locked in the raised position.
  • Such a sewing machine is used in the following manner:
  • the sewing machine is in the stored position, as shown in FIG. 4.
  • the user desires to carry out a sewing operation using the shelf 7 to increase the working surface of the free arm 4, it suffices to fold back the flaps 21, 22, and 23 by lifting up the catches 27.
  • the sewing machine thus assumes the position shown in FIG. 1, flaps 21, 22, and 23 forming ramps facilitating the delivery of pieces to be sewn towards the hole/needle plate (not shown) of the sewing machine.
  • pins 44 are fixed in the portion 13 of the panel 9, these pins being engageable in corresponding openings 45 in the portion 11 of panels 8, in the raised position of panels 8 and 9.
  • the shelf 7 is brought to the raised position and flaps 21, 22, and 23 are folded against the upper arm and head 6 of the sewing machine.
  • the second embodiment of sewing machine shown in FIGS. to 13 comprises the same principal elements as the 22, embodiment, namely: frame 1, base 2, column 3, lower free arm 4, upper arm 5, and head 6.
  • This second embodiment also has a retractable shelf 7 along the edges of which are hinged flaps 21, 22, and 23 enabling the sewing machine to be placed in a storage position, as shown in FIG. 11, by folding back the flaps 21, 22 and 23 against the upper arm 5 and the head 6.
  • the placing of the sewing machine into storage position takes place while the shelf is in the lowered position.
  • the panels 8 and 9 have been eliminated and the set of articulated parts connecting the shelf 7 to the base 2 of the frame comprises two pairs of levers 46 articulated to one another in scissor-fashion about pivot points 47.
  • One pair of. scissors 46, 47 is placed on either side of the machine between the base 2 and the shelf 7.
  • the levers 46 are pivotally mounted at one end thereof, one to the base 2 at 48 and the other to the shelf 7 at 49.
  • These levers are pivotally mounted at their opposite ends, one at 50 on a slide 51 capable of axial displacement in a slideway 52 provided in the base 2, and the other at 53 on a slide 54 located in a slideway 55 provided under the shelf 7.
  • the liaison of the shelf 7 to the base 2 by the intermediary of two pairs of scissors 46, 47 ensures a vertical displacement of the shelf 7 which remains parallel to the upper surface of free arm 4.
  • a locking device is provided to ensure the stability of the shelf 7.
  • This locking device comprises two pins 56 capable of sliding symmetrically in support bearings 57 disposed in the base 2. Ends 58 of these pins engage in bores 59 of the lower slides 51 when the shelf is in the upper position at the level of the upper surface of the free arm 4. These pins 56 are urged by springs 60 towards an operative position in the bores 59.
  • Each pin 56 is pivotally connected at 61 to a control lever 62, the two levers 62 being symmetrically pivoted at 63 on the base 2.
  • a cam 64 is able to act on the ends 65 of the levers 62 to cause movement thereof either to withdraw the pins 56 towards the central part of the base 2, or to move them apart to engage in the bores 59 of slides 51.
  • the cam 64 pivots about a vertical axis 66. This cam 64 is rigidly fixed to a manual control member composed of a knurled wheel 67 protruding from an opening 68 in the column 3.
  • This locking device can also be used to lock the shelf 7 in the lower position; Indeed, slides 51 have a hollow 69 in which the ends 58 of pins 56 are engageable to lock the slides 51 and hence the scissors 46, 47 in closed position corresponding to the lower position of the shelf 7. It is useful to recall that it is from the lower position of shelf 7 that the sewing machine can be brought to the storage position by lifting up flaps 21, 22, and 23 against the upper arm 5 and the head 6 of the sewing machine.
  • the second embodiment can also be furnished with the device composed of the lever 28 and spring 30 (see FIG. 5) intended to cause elevation of the shelf 7 after unlocking the devices 56 to 67.
  • a spring device tending to bring the shelf 7 into the raised position can be provided, acting either directly between the base 2 and the shelf 7, or on the scissors 46, 47, or even on the slides 51, 54.
  • a pressure would have to be provided on the shelf 7 to bring it into the lowered position after unlocking the locking device 56 to 67. The maintenance of the shelf in the lowered position would thus be assured by the locking device 56 to 67 in operative position.
  • a sewing machine for use on a supporting surface comprising a casing having a base, a column, a free lower arm including upper, lower and side faces, an upper arm, a head, and a plurality of flaps, means connecting said flaps to said casing to permit movement of said flaps between a lower position in which the sewing machine can be used and an upper position in which said flaps are raised against said casing to form therewith an enclosure for the sewing machine, material supporting means, and a set of articulated parts connecting the said material supporting means to the base of the casing so as to enable such material supporting means to be moved parallel to itself along a vertical axis between first and second positions, said means in its first position cooperating with said lower arm so as to enlarge the upper face thereof and in its second position sufficiently exposing said lower arm for the sewing of tubular pieces of material.
  • said set of articulated parts comprises a panel along each of three sides of said base, each panel comprising a first portion hinged to said material and a second portion hinged to said base, said first and second portions being hinged to one another.
  • said set of articulated parts comprises two pairs of levers articulated in scissor-fashion to form two pairs of scissors each with two pairs of arms, one pair of arms of each pair of scissors being articulated by one arm to the underneath of a longitudinal side of sai material su rti means db the other arm to sziid base, the digpos i e pairs c lf arni s of each pair of scissors being articulated by one arm to a slide located in a slideway under said material supporting means, and by the other arm to a slide located in a slideway in said base, and comprising a locking device enabling locking of said scissors either in an open position corresponding to said operative level of said material supporting means or in a closed position corresponding to said retracted level of said material supporting means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US32956A 1969-05-09 1970-04-29 Sewing machine Expired - Lifetime US3683833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH711269A CH497591A (fr) 1969-05-09 1969-05-09 Machine à coudre

Publications (1)

Publication Number Publication Date
US3683833A true US3683833A (en) 1972-08-15

Family

ID=4320149

Family Applications (1)

Application Number Title Priority Date Filing Date
US32956A Expired - Lifetime US3683833A (en) 1969-05-09 1970-04-29 Sewing machine

Country Status (12)

Country Link
US (1) US3683833A (xx)
JP (1) JPS506823B1 (xx)
AT (2) AT304238B (xx)
BE (1) BE749613A (xx)
CH (1) CH497591A (xx)
DE (2) DE2065939C3 (xx)
DK (1) DK136319B (xx)
FR (1) FR2047133A5 (xx)
GB (1) GB1254969A (xx)
IE (1) IE34234B1 (xx)
NL (1) NL7006524A (xx)
SE (1) SE365261B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034691A (en) * 1975-03-04 1977-07-12 Brother Kogyo Kabushiki Kaisha Sewing machine with a sub-table device
US4040369A (en) * 1975-11-17 1977-08-09 Happy Sewing Machine Manufacturing Company Convertible-bed type sewing machine head
CN104153132A (zh) * 2014-08-21 2014-11-19 安徽霞珍羽绒股份有限公司 一种拷边机工作台

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4529730B2 (ja) * 2005-02-25 2010-08-25 アイシン精機株式会社 ミシン
JP6335421B2 (ja) * 2012-03-09 2018-05-30 蛇の目ミシン工業株式会社 フラップカバーを備えたミシン

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438687A (en) * 1968-01-22 1969-04-15 Arnold Wikey Sewing machine center
DE1914519A1 (de) * 1968-04-05 1969-10-30 Mefina Sa Naehmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438687A (en) * 1968-01-22 1969-04-15 Arnold Wikey Sewing machine center
DE1914519A1 (de) * 1968-04-05 1969-10-30 Mefina Sa Naehmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034691A (en) * 1975-03-04 1977-07-12 Brother Kogyo Kabushiki Kaisha Sewing machine with a sub-table device
US4040369A (en) * 1975-11-17 1977-08-09 Happy Sewing Machine Manufacturing Company Convertible-bed type sewing machine head
CN104153132A (zh) * 2014-08-21 2014-11-19 安徽霞珍羽绒股份有限公司 一种拷边机工作台

Also Published As

Publication number Publication date
GB1254969A (en) 1971-11-24
DE2021987C3 (de) 1978-05-24
DE2065939A1 (de) 1977-03-24
NL7006524A (xx) 1970-11-11
CH497591A (fr) 1970-10-15
IE34234L (en) 1970-11-09
DK136319B (da) 1977-09-26
AT304237B (de) 1972-12-27
JPS506823B1 (xx) 1975-03-18
DE2065939B2 (de) 1977-08-11
SE365261B (xx) 1974-03-18
DE2065939C3 (de) 1978-04-06
AT304238B (de) 1972-12-27
BE749613A (fr) 1970-10-01
DE2021987A1 (de) 1970-11-19
DE2021987B2 (de) 1977-10-06
FR2047133A5 (xx) 1971-03-12
IE34234B1 (en) 1975-03-19
DK136319C (xx) 1978-02-20

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