US3012532A - Sewing machines - Google Patents

Sewing machines Download PDF

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Publication number
US3012532A
US3012532A US787538A US78753859A US3012532A US 3012532 A US3012532 A US 3012532A US 787538 A US787538 A US 787538A US 78753859 A US78753859 A US 78753859A US 3012532 A US3012532 A US 3012532A
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unit
frame
needle
sewing machines
work
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US787538A
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Leslie Ivan Alexander
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings

Definitions

  • This invention relates to sewing machines and has for its object to facilitate the assembly of the mechanisms for oscillating the needle, for feeding the work past the needle and for driving the machine; and also to enable one or more of said mechanisms to be readily removed from the machine for repair or inspection.
  • any one or more of the mechanisms for oscillating the needle, for feeding the work and for driving the said needle oscillating and work-feeding mechanisms is or each is in the form of a self-contained unit removably mounted in the frame of the machine.
  • the unit for feeding the work may also include the shuttle or bobbin mechanism.
  • FIGURE 1 is a side elevation of a sewing machine embodying the invention.
  • FIGURE 2 of the accompanying drawing is an exploded view, with the main frame in longitudinal section, of a sewing machine in accordance with the invention, the several mechanism units being shown disassembled from the frame.
  • FIGURE 3 is a fragmentary sectional view through the outer end of the head of the machine, with the needle unit in elevation.
  • FIGURE 4 is a cross-section through the Work-feed unit when assembled in the frame, the section being taken on a plane corresponding to line IV-IV, FIGURE 2.
  • the frame 1 of the sewing machine is a hollow U-shaped structure formed in one orvmore parts as a sheet-metal pressing or casting, or partly as a pressing or partly as a casting, or otherwise as found convenient.
  • the rear of this hollow frame is open at the back.
  • the upper arm 2 is tubular, with an open front end, and the lever arm comprises a rear compartment 3 open at the back, and, leading from this compartment, a forward extension 4 of open-topped channel section.
  • the mechanism for oscillating the needle 5 is in the form of a self-contained unit A comprising a casing 6 containing the mechanism and provided at the rear with a cylindrical extension 7 from which projects a driving shaft 8 having at its extremity a coupling key 9.
  • the extension 7 is adapted to fit closely within the open front end of the top arm 2, and to be removably secured therein by any suitable means, such as by a screw 10 or by a clip or other device; and in order to locate the unit A with the needle in its correct vertical position, the screw 10 engages a tapped hole in the extension 7.
  • a rubber sleeve 11 may be interposed between the latter and the arm 2 in order to reduce noise and vibration.
  • the mechanism for feeding the work past the needle 5 is in the form of a self-contained unit B comprising, a trough-like casing 12 enclosing the mechanism and from the rear end of which extends a driving shaft 13 terminating in a coupling key 14.
  • the unit B may also include the rotary hook 15 or vibrating shutter or central bobbin for forming the stitches, and its driving means.
  • the casing 12 is adapted to fit closely within the open front end of the lower arm extension 4 and to be removably secured therein by screws, clips or other suitable means (not shown).
  • the casing 12 is shaped trans- 3,012,532 Patented Dec. 12, 1961 ice versely to correspond to the interior of the extension 4, so that it cannot turn therein.
  • a rubber lining 16 may be interposed between the casing 12 and the extension 4 to reduce noise and vibration.
  • the work-supporting plate 17 may be a separate plate attached by screws or the like to flanges 18 at the top edges of the extension 4, and rubber may be interposed between these parts.
  • the plate 17 may, if desired, be part of the unit B, being attached to the casing 12 or to a fixed part inside it.
  • the motor and mechanism for driving the mechanism of units A and B is in the form of a self-contained unit C comprising a flanged frame 19 of a contour similar to that of the open rear end of frame 1, and having mounted thereon an electric motor 20, and wheels 21, 22, each driven from the motor by a belt 23.
  • the upper wheel 21 drives a shaft 24 having in its end a coupling socket 25 which is a counterpart of the coupling key 9 on the needle-driving shaft 8.
  • the lower wheel 22 drives a shaft 26 having in its end a coupling socket 27 which is a counterpart of the coupling key 14 on the feed shaft 13.
  • the frame 19 is adapted to be inserted into the open back of the frame 1, with the motor 20 in the compartment 3, and to be removably secured therein by any suitable means, such as screws 28; and a layer of rubber 29 may be interposed between the metallic surfaces to reduce noise and vibration.
  • each unit is assembled independently, outside the frame of the machine, and can then be readily mounted in the frame. Also, any one unit can be quickly removed for inspection, cleaning or repair.
  • the unit C may be insertible and removable through an open back of the frame, it may be insertible and removable through an opening in the base of the compartment 3, the back being left intact.
  • a sewing machine comprising a hollow main frame having a forwardly projecting lower arm open at its front end, a separate self-contained work feed unit carried by and located substantially entirely within the open front end of said arm, said work feed unit including a rearwardly extending drive shaft, means detachably securing said unit in position in said arm, a drive unit carried by said main frame and including a forwardly extending drive shaft, the rearwardly extending drive shaft of said work feed unit and said forwardly extending drive shaft of said drive unit having one end in freely detachable driving engagement with each other, said work feed unit being in slidable engagement with the open front end of said arm,

Description

Dec. 12, 1961 Filed Jan. 19, 1959 I. A. LESLIE 3,012,532
SEWING MACHINES 2 Sheets-Sheet 1 Inventor LO" l/elann er Par/n Dec. 12, 1961 l. A. LESLIE 3,012,532
SEWING MACHINES Filed Jan. 19. 1959 2 Sheets-Sheet 2 l n ven tor fi/enz @0179 United States Patent 3,012,532 SEWING MACHINES I Ivan Alexander Leslie, Fairwater Parkfield Drive, Nantwich, England Filed Jan. 19, 1959, Ser. No. 787,538 Claims priority, application Great Britain Feb. 3, 1958 1 Claim. (Cl. 112-258) This invention relates to sewing machines and has for its object to facilitate the assembly of the mechanisms for oscillating the needle, for feeding the work past the needle and for driving the machine; and also to enable one or more of said mechanisms to be readily removed from the machine for repair or inspection.
According to the invention, in a sewing machine any one or more of the mechanisms for oscillating the needle, for feeding the work and for driving the said needle oscillating and work-feeding mechanisms, is or each is in the form of a self-contained unit removably mounted in the frame of the machine. The unit for feeding the work may also include the shuttle or bobbin mechanism.
FIGURE 1 is a side elevation of a sewing machine embodying the invention.
FIGURE 2 of the accompanying drawing is an exploded view, with the main frame in longitudinal section, of a sewing machine in accordance with the invention, the several mechanism units being shown disassembled from the frame.
FIGURE 3 is a fragmentary sectional view through the outer end of the head of the machine, with the needle unit in elevation.
FIGURE 4 is a cross-section through the Work-feed unit when assembled in the frame, the section being taken on a plane corresponding to line IV-IV, FIGURE 2.
Referring to the drawings, the frame 1 of the sewing machine is a hollow U-shaped structure formed in one orvmore parts as a sheet-metal pressing or casting, or partly as a pressing or partly as a casting, or otherwise as found convenient. The rear of this hollow frame is open at the back. The upper arm 2 is tubular, with an open front end, and the lever arm comprises a rear compartment 3 open at the back, and, leading from this compartment, a forward extension 4 of open-topped channel section.
The mechanism for oscillating the needle 5 is in the form of a self-contained unit A comprising a casing 6 containing the mechanism and provided at the rear with a cylindrical extension 7 from which projects a driving shaft 8 having at its extremity a coupling key 9. The extension 7 is adapted to fit closely within the open front end of the top arm 2, and to be removably secured therein by any suitable means, such as by a screw 10 or by a clip or other device; and in order to locate the unit A with the needle in its correct vertical position, the screw 10 engages a tapped hole in the extension 7. A rubber sleeve 11 may be interposed between the latter and the arm 2 in order to reduce noise and vibration.
The mechanism for feeding the work past the needle 5 is in the form of a self-contained unit B comprising, a trough-like casing 12 enclosing the mechanism and from the rear end of which extends a driving shaft 13 terminating in a coupling key 14. The unit B may also include the rotary hook 15 or vibrating shutter or central bobbin for forming the stitches, and its driving means.
The casing 12 is adapted to fit closely within the open front end of the lower arm extension 4 and to be removably secured therein by screws, clips or other suitable means (not shown). The casing 12 is shaped trans- 3,012,532 Patented Dec. 12, 1961 ice versely to correspond to the interior of the extension 4, so that it cannot turn therein. A rubber lining 16 may be interposed between the casing 12 and the extension 4 to reduce noise and vibration.
The work-supporting plate 17 may be a separate plate attached by screws or the like to flanges 18 at the top edges of the extension 4, and rubber may be interposed between these parts. The plate 17 may, if desired, be part of the unit B, being attached to the casing 12 or to a fixed part inside it.
The motor and mechanism for driving the mechanism of units A and B is in the form of a self-contained unit C comprising a flanged frame 19 of a contour similar to that of the open rear end of frame 1, and having mounted thereon an electric motor 20, and wheels 21, 22, each driven from the motor by a belt 23. The upper wheel 21 drives a shaft 24 having in its end a coupling socket 25 which is a counterpart of the coupling key 9 on the needle-driving shaft 8. The lower wheel 22 drives a shaft 26 having in its end a coupling socket 27 which is a counterpart of the coupling key 14 on the feed shaft 13.
The frame 19 is adapted to be inserted into the open back of the frame 1, with the motor 20 in the compartment 3, and to be removably secured therein by any suitable means, such as screws 28; and a layer of rubber 29 may be interposed between the metallic surfaces to reduce noise and vibration. When the three units A, B, C are being assembled in the frame 1, the keys 9, 14, on shafts 8, 13, of units A and B are engaged with the sockets 25, 27, of the shafts 24, 26 of unit C, so that the drive from the motor 20 can be transmitted to the needle, feed and stitch-forming mechanisms.
The assembly of the mechanism of the machine is greatly facilitated by the use of this invention, as each unit is assembled independently, outside the frame of the machine, and can then be readily mounted in the frame. Also, any one unit can be quickly removed for inspection, cleaning or repair. Instead of the unit C being insertible and removable through an open back of the frame, it may be insertible and removable through an opening in the base of the compartment 3, the back being left intact.
I claim:
A sewing machine comprising a hollow main frame having a forwardly projecting lower arm open at its front end, a separate self-contained work feed unit carried by and located substantially entirely within the open front end of said arm, said work feed unit including a rearwardly extending drive shaft, means detachably securing said unit in position in said arm, a drive unit carried by said main frame and including a forwardly extending drive shaft, the rearwardly extending drive shaft of said work feed unit and said forwardly extending drive shaft of said drive unit having one end in freely detachable driving engagement with each other, said work feed unit being in slidable engagement with the open front end of said arm,
References Cited in the file of this patent UNITED STATES PATENTS 862,547 Fefel Aug. 6, 1907 1,581,498 Weis Apr. 20, 1926 1,608,608 Martin Nov. 30, 1926 2,063,841 Gooseman Dec. 8, 1936 FOREIGN PATENTS 344,795 Germany Nov. 30, 1921
US787538A 1958-02-03 1959-01-19 Sewing machines Expired - Lifetime US3012532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3393/58A GB855405A (en) 1958-02-03 1958-02-03 Improvements in the construction of sewing machines

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US3012532A true US3012532A (en) 1961-12-12

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US787538A Expired - Lifetime US3012532A (en) 1958-02-03 1959-01-19 Sewing machines

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CH (1) CH368696A (en)
DE (1) DE1142494B (en)
FR (1) FR1213394A (en)
GB (1) GB855405A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253564A (en) * 1962-07-12 1966-05-31 Borletti Spa Casing for sewing machine
US3420200A (en) * 1966-02-03 1969-01-07 Singer Co Modular sewing machines
FR2485052A1 (en) * 1980-03-31 1981-12-24 Rockwell Rimoldi Spa MODULAR SEWING MACHINE
US4421042A (en) * 1983-06-22 1983-12-20 The Singer Company Sewing machine head end module construction
US4624201A (en) * 1985-05-27 1986-11-25 Rockwell-Rimoldi S.P.A. Sewing machine with a base consisting of two detachably connected modules
EP0488955A1 (en) * 1990-11-29 1992-06-03 Mefina S.A. Casing for a sewing machine
US5487348A (en) * 1992-12-23 1996-01-30 Cordes; John Sewing machine with elongated arm and strengtheing plate
US5706747A (en) * 1995-09-28 1998-01-13 Tokai Kogyo Mishin Kabushiki Kaisha Sewing machine
JP2002273081A (en) * 2001-03-19 2002-09-24 Brother Ind Ltd Feed regular assembly, bobbin case module having cloth feed mechanism, and sewing machine provided with bobbin case module having cloth feed mechanism
US20120318181A1 (en) * 2011-06-20 2012-12-20 Zoltan Kasa Quilting machine and improved driving system for such quilting machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH587374A5 (en) * 1975-12-18 1977-04-29 Mefina Sa
GB2269828A (en) * 1992-08-20 1994-02-23 Thompson Whiteside Scott Derek Telescopic and folding sewing machine
GB2311302B (en) * 1996-03-19 1999-08-18 Standard Cressall Ltd Sewing machine horn
DE19618667A1 (en) * 1996-05-09 1997-11-13 Zsk Stickmasch Gmbh Embroidery machine
US11583055B2 (en) * 2018-10-04 2023-02-21 Catherine Newman Instrument for removing hairs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US862547A (en) * 1906-08-31 1907-08-06 Us Felling Machine Company Blindstitching-machine.
DE344795C (en) * 1920-02-03 1921-11-30 Berliner Broncegiesserei Rohrb Sewing machine
US1581498A (en) * 1921-06-28 1926-04-20 Metropolitan Sewing Machine Co Sewing machine
US1608608A (en) * 1924-08-27 1926-11-30 Martin Arthur Detachable driving unit
US2063841A (en) * 1934-04-11 1936-12-08 Singer Mfg Co Sewing machine frame

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE363034A (en) * 1928-08-16
BE470685A (en) * 1946-01-22
CH283393A (en) * 1950-08-11 1952-06-15 Orelli Franz Von Housing of a sewing machine with a free arm.
DE885194C (en) * 1950-09-14 1953-08-03 Union Special Machine Co Sewing machine
DE921661C (en) * 1951-01-20 1954-12-23 Karl Friedrich Mueller Household sewing machine with replaceable head piece
NL85615C (en) * 1952-03-05

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US862547A (en) * 1906-08-31 1907-08-06 Us Felling Machine Company Blindstitching-machine.
DE344795C (en) * 1920-02-03 1921-11-30 Berliner Broncegiesserei Rohrb Sewing machine
US1581498A (en) * 1921-06-28 1926-04-20 Metropolitan Sewing Machine Co Sewing machine
US1608608A (en) * 1924-08-27 1926-11-30 Martin Arthur Detachable driving unit
US2063841A (en) * 1934-04-11 1936-12-08 Singer Mfg Co Sewing machine frame

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253564A (en) * 1962-07-12 1966-05-31 Borletti Spa Casing for sewing machine
US3420200A (en) * 1966-02-03 1969-01-07 Singer Co Modular sewing machines
FR2485052A1 (en) * 1980-03-31 1981-12-24 Rockwell Rimoldi Spa MODULAR SEWING MACHINE
US4421042A (en) * 1983-06-22 1983-12-20 The Singer Company Sewing machine head end module construction
US4624201A (en) * 1985-05-27 1986-11-25 Rockwell-Rimoldi S.P.A. Sewing machine with a base consisting of two detachably connected modules
EP0488955A1 (en) * 1990-11-29 1992-06-03 Mefina S.A. Casing for a sewing machine
US5205230A (en) * 1990-11-29 1993-04-27 Mefina S.A. Sewing machine
US5487348A (en) * 1992-12-23 1996-01-30 Cordes; John Sewing machine with elongated arm and strengtheing plate
US5706747A (en) * 1995-09-28 1998-01-13 Tokai Kogyo Mishin Kabushiki Kaisha Sewing machine
JP2002273081A (en) * 2001-03-19 2002-09-24 Brother Ind Ltd Feed regular assembly, bobbin case module having cloth feed mechanism, and sewing machine provided with bobbin case module having cloth feed mechanism
US20120318181A1 (en) * 2011-06-20 2012-12-20 Zoltan Kasa Quilting machine and improved driving system for such quilting machine
US8695517B2 (en) * 2011-06-20 2014-04-15 Zoltan Kasa Quilting machine and improved driving system for such quilting machine

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CH368696A (en) 1963-04-15
DE1142494B (en) 1963-01-17
FR1213394A (en) 1960-03-31
GB855405A (en) 1960-11-30

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