US1221291A - Embroidering presser-foot. - Google Patents

Description

R. C ORNELY. EMBROIDERING PRESSER FOOT. APPLICATION FILED JUNE 28. 1913.

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* h "HIIIIIIiI Patented Apr. 3, I917.

R. CORNELY.

I EMBROIDERING PRESSER FOOT. APPLICATION FILED JUNE 28, 1913- 1 ,8 ,91 Patented Apr. 3, 1917.

3 SHEETS-SHEET 2- 2X) zmo R. CORNELY. EMBROIDERING PRESSER FOOT. APPLICATION FILED JUNE 2a. 1913.

Patented Apr. 3, 1917.

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RoBER'r CORNELY, or PARIS, FRANCE EMBROIDEBING PRESSER-FOOT.

Specification 0 e ers Patent.

Patented Apr. 3, 191%.

Application filed. June 28, 1913. Serial No. 776,413.

To all whom it may concern:

Be it known that T, ROBERT CoRNnLY, resident of Paris, France, have invented a new and useful Improvement in Embroidering Presser-Feet, which is fully set forth in the following specification.

The present invention relates to improvements in the presser foot of sewing, embroidering, scallopin and like machines and has for its objects the preventing of any drawing of or wrinkles in the material to be sewn, occasioned either by the action of the elements which feed or displace said ma terial, or by the tension of the thread or threads; and also the preventing of any missed or dropped stitches.

In the machines used heretofore, when seams presenting a certain thickness or relief had to be produced, the presser-foot was provided with a passage corresponding to the shape of the enhanced seam, embroidery or festoon. But since a differently shaped presser was necessary for every different height or width of said seam, and as it may also happen that one and the same seam presents difierences in width and thickness and that the material may be irregular on account of longitudinal or transverse scams or embroideries, the feet of certain machines have been provided with india'n rubber which, owing to its elasticity, adapts itself to all irregularities of the material or of its seams or embroideries.

But since a sliding of the material is not possible under the rubber, these presser-feet act at the same time as material feeders, some by means of a vertical reciprocating movement, others by a rotating movement. Their action is, however, complicated and not reliable, especially the rotating presser feet or feed rollers which occasion missed or dropped stitches and longitudinal folds in the material because they do not maintain the material stretched transversely of the direction of the feed.

In order to present to the needles the material stretched in all directions, some 1na chines employ several elements which act alternately upon the material. These elements for instance, a ring-shaped rubber clothstretcher in the interior of which works a presser provided with rubber which at the same time acts as a material feeder) have up-and-down combined with forward-andbackward movements. Such a construction s, however, complicated and presents great inconveniences.

The object of the present invention is to obviate all these inconveniences and to resolve the problem of maintaining under the needle or needles, materials of irregular thickness provided with seams, embroideries or festoons of also irregular thickness, absolutely flat and stretched in all directions, and this by means of Presser-feet of which the under surface against which the material slides is rendered elastic in all directions without hindering the sliding of the material. This is obtained, either by providing said under surface of the presser-foot with a brush or cushion of springs, the elements of which present the necessary elasticity for adapting themselves to all irregularities of the material or of its seams without hindering the displacement of the material, or by means of a pair of rollers, circular brushes or the like, the shafts of which are arranged in angular or parallel relation to the direction of the feed, but never in a perpendicular direction to said feed. These rollers or the like being rotated in the proper direction, stretch the material transverselyto the direction of the feed.

The invention will be better understood by reference to the accompanying drawings, wherein Figure l 'is a vertical section on the line AB of Fig. 2;

Fig. 2 is a plan view of the structure shown in Fig. 1; v

Fig. 3 is a view similar to Fig. 1, taken on the line AB of Fig. 4:;

Fig. l is a plan view corresponding to Fig. 3; V

Fig. 5 is a vertical elevation on the line AB of Fig. 6; and

Fig. 6 is a plan view corresponding to Fig. 5.

Referring to the drawings, 1 indicates the bar of the presser-foot of a sewing machine, which is provided with a block 4 upon which a slide 5 can be displaced, by any suitable means, together with the cloth plate 2 with which slide 5 is connected by means of a rod 6.

Arm 11 (Figs. 1 and 2) of slide 5 is provided with an adjustable bracket 12 which carries, besides the well known presser tongue 13, on separate yielding arms two rollers 15 and 16 which bear yieldingly upon the material and of which rollers the planes of rotation form an angle the apex of which 3 is in a directionopposite to the direction of the feed of the material. 7 I

In consequence of their angular relation, these rollers and'16 stretch the material between themselves as soon as they are rotated by the displacement of said material and the consequence is that the material is simultaneously stretched in the direction of the feed and transversely to said direction,

the pressure of rollers 15 and 16 upon the material retarding the displacement of the material in the direction of the feed and the rotation of said rollers in angular directions causing lateral tension of the material. This arrangement can also be used in combination with a rotating feed roller 17.

It is evident that the shafts of these rotating rollers or brushes may also be arranged parallel to the direction of the feed of the material, but in such case they have tobe rotated by special mechanism.

In Figs. 3 with an arm 7 to which is pivoted by means of a universal joint '8 and 9 a brush-shaped presser foot. 10 under the bristles of which the irregularities of thickness of the mathe most delicate and thinnest materials can be provided with raised seams or embroideries and in this case the presser tongue 13 '(Figs. 1 and 2) will not be necessary if the brush 10 (F igsB'and 4:) is provided with a passage 18 for the needles and extends over hole 14 0f the cloth plate 2. In the construction shown in Figs. 5 and 6 the material is fed by a suitable feed-plate such as is indicated at 17 While for the purpose of illustration, preferred embodiments of the inventive idea have been shown and described in detail, it is to be understood that the invention is not limited to the structures shown, but that the same is susceptible of various other mechanical expressions within the limits of the appended claims.

Claims:

1. In a sewing machine presser-foot, the combination of a plurality of materialdriven independently revoluble members in and 4 the slide 5 is provided yielding and frictional engagement with the material passing under said foot, the planes of rotation of the said members diverging in the direction of the feed, and a yielding tongue intermediate said members for maintaining said material Hat.

2. In a sewing machine presser-foot, the combination of a plurality of materialdriven independently revolving members non-positively engaging the material pass ing under said foot, the planes of rotation of said members diverging in the direction of the feed.

8. In a sewing machine presser-foot the combination of a plurality of materialdriven independently revolving members engaging the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed 4-. In a sewing machine resser-foot, the combination of a plurality of materialdriven independently yielding members engaging the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed.

5. In a sewing machine presser-foot, the combination of a plurality of materialdriven independently revolving and independently yielding members engaging the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed.

6. In a sewing machine presser-foot, the combination of 'a plurality of materialdriven members in yielding and frictional engagement with the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed.

7. In a sewing machine presser-foot, the combination of a plurality of materialdriven independently yielding members engaging the material passing under said foot.

8. In a sewing machine prcsser-foot, the combination of a plurality of materialdriven independently revolving and independently yielding members engaging the material passing under said'foot.

9. I11 a sewing machine presser-foot, the combination of a plurality of independently yielding revoluble members engaging the material passing under said foot.

10. In a sewing machine presser-foot, the combination of a plurality of independently revolving and independently yielding members engaging the material passing under said foot.

11. In a sewing machine presser-foot, the combination of a plurality of independently yielding revoluble members engaging the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed.

12. In a sewing machine presser-foot, the combination of a plurality of independently revolving and independently yielding members engaging the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed.

13. In a sewing machine presser-foot, the combination of a plurality of materialdriven independently revoluble members in yielding and frictional engagement with the material passing under said foot, the planes of rotation of the said members diverging in the direction of the feed, a yielding tongue intermediate said members for maintaining said material flat, and other means having a flexible portion for engaging said material.

1 1. In a sewing machine presser foot, the combination of material-driven rollers set at angles to the direction of feed for stretching and for holding the material flat, a presser tongue adapted to contact with the material before being operated on by a needle, and a member having a flexible material engaging surface for engaging said material thereafter.

15. In a sewing machine presser foot, material-driven rollers set at angles to the? direction of feed for stretching and for holding the material flat, a presser tongue adapted to contact with the material before being operated on by a needle, and a member having flexible material engaging protrusions for engaging said material as it passes from the needle.

16. In a sewing machine presser-foot, the combination of material-driven members set at angles to the direction of feed for stretching and for holding the material flat, a presser tongue adapted to contact with the material before being operated on by a needle, and a universally-mounted member having a flexible material-engaging surface for engaging said material.

17. In a sewing machine presser-foot, the combination of material-driven members set at angles to the direction of feed for stretching and for holding the material fiat, and a universally-mounted member having a flexible material-engaging surface for engaging said'material.

18. In a sewing machine presser-foot, material-driven members set at angles to the direction of feed for stretching and for holding the material flat as it approaches the needle, and a member having flexible material-engaging protrusions for engaging said material as it passes from the needle.

19. In a sewing machine presser-foot, the combination of a plurality of independently revolving members the planes of rotation of which diverge in the direction of the feed, and a member having a flexible materialengaging surface for engaging said material.

20. Ina sewing machine presser-foot, the combination of a plurality of independently yielding revoluble members the planes of rotation of which diverge in the direction of the feed, and a member having a flexible material-engaging surface for engaging said material.

21. In a sewing machine presser-foot, the combination of a plurality of independently yielding revoluble members for stretching and holding the material flat as it approaches the needle, and'a member having a flexible material-engaging surface for engaging said material.

22. In a sewing machine presser-foot, the combination of a plurality of independently revolving members for stretching and holding the material flat as it approaches the needle, and a member having a flexible material-engaging surface for engaging said material.

23. In a sewing machine presser-foot, the combination of a plurality of revoluble members for stretching and for holding the material flat as it approaches the needle, and a brush-like member for engaging the material as it leaves the needle.

24. In a sewing machine presser-foot, the combination of a plurality of revoluble members for stretching and for holding the material flat as it approaches the needle, a yielding material-engaging tongue between said members, and a brush-like member for engaging the material as it leaves the needle.

25. In a sewing machine, a presser-foot comprising a plurality of material-driven members in frictional engagement with the material passing under said foot, the planes of rotation of said members diverging in the direction of the feed, and means for feeding the material under said foot.

In testimony whereof I have signed this.

specification in the presence of two subscrib- 1ng witnesses.

ROBERT CORNELY.

Witnesses:

GEORGE E. LIGHT, LUOIEN MEMMINGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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