US2019586A - Thread drawing machine - Google Patents
Thread drawing machine Download PDFInfo
- Publication number
- US2019586A US2019586A US727173A US72717334A US2019586A US 2019586 A US2019586 A US 2019586A US 727173 A US727173 A US 727173A US 72717334 A US72717334 A US 72717334A US 2019586 A US2019586 A US 2019586A
- Authority
- US
- United States
- Prior art keywords
- presser
- bar
- hollow
- rod
- presser feet
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings or for fastening articles, e.g. buttons, by sewing
- D05B3/04—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings or for fastening articles, e.g. buttons, by sewing with mechanisms for work feed
Definitions
- the instant invention relates to an improvement in thread drawing machines, more particularly of the type disclosed in Patent No. 1,984,- 501, issued December 18, 1934.
- This invention relates in particular to the simplification of the drive for the special presser feet for a thread drawing machine, disclosed in the above patent, and to the cooperation of these special presser feet with the piercing blade.
- Theinvention consistsparticularly in forming the'rod for the special presser feet as a hollow body which guides the rod of the piercing blade.
- the curved-groove disc which effects the actuation of the special presser feet, is united with the crank for driving the piercing blade in a single cast piece.
- a roller fixed upon the hollow shaft of the special presser feet, engages directly in the curved groove of the cam disc.
- Fig. l is a front view of the machine with certain parts shown in section,
- Fig. 2 is a left end view thereof
- Fig. 3 is a left end view of the machine with the cover removed therefrom, and
- Fig. 4 is a sectional view along line IVIV of Fig. 3.
- Fig. 1 is shown the sewing machine arm I containing the usual drive shaft 2, upon which is fixed a unitary cast body 3, 4, 5. Portion 3 of this cast body corresponds to the crank arm, and portion 4, to the crank pin.
- the crank arm 3 5 is directly united in a single piece, by means of the crank pin a, to a grooved cam disc 5.
- This hollow member or presser-bar 9 which is substituted for the massive rod for the special presser feet in the machine disclosed in the above patent, is guided at its lower end directly in the machine arm, and at its upper end, ina special bush it.
- This hollow member carries an equilaterally formed U-shaped yoke H, in the legs 52 of which are inserted the presser feet or lugs E3 of resilient material, such as rubber.
- the U- shaped yoke H with its legs 52 embraces the presser feet of the normal presser-bar 26.
- the reciprocating rod i5, carrying the piercing blade it, is arranged inside of the hollow member 9.
- a connecting rod 58 by means of a split 25 block it.
- the bearing head 2i is split or divided in known manner.
- the mid-portion of the hollow body 9 is enlarged and is open at either the inner side alone or on both sides, thereby resulting in a cross-section, as shown in Fig. 4.
- is connected with the clamping piece 8 upon the hollow body 9, which slides in a slot 22 in the cover 23. This arrangement eliminates rotative movement of the hollow member 9 which would interfere with its up and down movement and cause the roller 7 to jam in the cam groove 5.
- all the driving elements may be disposed within the sewing machine arm; and, by the elimination of all the exterior bearing projections, it is possible to use as well a machine arm of the usual dimensions for thread drawing machines.
- the machine as described works in the following manner:
- the normal presser-bar is pressing on the material.
- the special presser-bar goes down before the blade pierces the material. Its rubber feet are spread in meeting the material, and in this manner tightly draw the material before the blade pierces.
- presser feet presser feet, a piercing tool, a hollow presser-bar connected with said presser feet, a reciprocating rod for said piercing tool fitted within said hollow presser-bar, and means for actuating said hollow presser-bar and reciprocating rod.
- presser feet having resilient extremities, a piercing tool, a hollow presser-bar connected with said presser feet, a reciprocating rod for said piercing tool fitted within said hollow presser-bar, and means for actuating said hollow presser-bar and reciprocating rod.
- presser feet presser feet, a piercing tool, a hollow presser-bar connected with said presser feet, a reciprocating rod for said piercing tool fitted within said hollow presser-bar, means for actuating said rod comprising a drive shaft and connections between said drive shaft and rod, and at least one opening in said hollow presser-bar for permitting the movements of said connections.
- a machine of the class described having a head, presser feet, a piercing tool, a hollow presser-bar in said head connected with said presser feet, a reciprocating rod for said piercing tool fitted within said hollow presser-bar, and driving means wholly within said head for actuating said hollow presser-bar and reciprocating rod comprising a drive shaft, an integral unit fixed to said drive shaft consisting of a crank arm, a crank pin for reciprocating said rod, and a cam disc for driving said hollow presser-bar.
- a machine of the class described having a head, presser feet, a piercing tool, a hollow presser-bar in said head connected with said presser feet, a reciprocating rod for said piercing tool fitted within said hollow presser-bar, and driving means wholly within said head for actuating said hollow presser-bar and reciprocating rod comprising a drive shaft, an integral unit fixed to said drive shaft consisting of a crank arm, a crank pin and a grooved cam disc,
- an equilateral yoke for carrying said presser feet, a hollow presser-bar connected with said yoke, a reciprocating rod for said piercing tool fitted within said hollow presser-bar and passing through the central portion of said yoke, and 10 means for actuating said hollow presser-bar and rod 8.
- a conventionally dimensioned arm adapted for household sewing machines terminating in a hollow head, 15 presser feet for stretching the material, a piercing blade, a hollow presser-bar in said head connected with said presser feet, a reciprocating rod for said piercing blade fitted within said hollow presser-bar, and unitary driving means whol- 20 ly within said head for actuating said hollow presser-bar and reciprocating rod.
- a machine of the class described having a head, a cover for said head having a slot therein, presser feet, a piercing tool, a hollow presser-bar 25 in said head connected with said presser feet, a reciprocating rod for said piercing tool fitted within said hollow presser-bar, driving means wholly within said head for actuating said hollow presser-bar and reciprocating rod comprising 3 a drive shaft, an integral unit fixed to said drive shaft consisting of a crank arm, a crank pin and a grooved cam disc, a roller on said hollow presser-bar engaging said cam disc, a connecting rod between said crank pin and reciprocating 3;
- a normal presser-bar presser feet on said normal presserbar constantly pressing against the material
- a 40 second hollow presser-bar an equilateral yoke on said second presser-bar terminating in presser feet, said last-mentioned presser feet embracing symmetrically said first-mentioned presser feet
- a piercing tool a reciprocating rod for said piercing tool within said second and means for imparting vertically reciprocating movements to said second presser-bar and said rod during the machine operation.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2019586X | 1933-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2019586A true US2019586A (en) | 1935-11-05 |
Family
ID=7966193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US727173A Expired - Lifetime US2019586A (en) | 1933-07-10 | 1934-05-23 | Thread drawing machine |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2019586A (fr) |
| FR (1) | FR772429A (fr) |
-
1934
- 1934-04-25 FR FR772429D patent/FR772429A/fr not_active Expired
- 1934-05-23 US US727173A patent/US2019586A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR772429A (fr) | 1934-10-29 |
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