US2513343A - Grip presser foot for sewing machines - Google Patents

Description

July 4, 1950 A. MAXSON GRIP PRESSER FOOT FOR SEWING MACHINES Filed March 15, 1946 AMELIA Mnxso/v,

he FATTORNEY- Patented July 4, 1950 UNITED STATES PATENT OFF-ICE "GRIP BR-ESSER FOOT FOR SEWING MACHINES 3 Claims. 1 This invention relates to 'presser feet for sewing machines-and has as its-main object to provide a presser foot of a novel construction and operation which will. be more eflicient than the presser feet. now in use and which will hold the material. worked; on more; firmly and reliably, preventing-:avwrinlding thereof or an unevenness or flaws in :the finished product.

Still another object of=myinvention is to provide a :prosserfoot as characterized hereinbefore,

whichadj-usts :itself' to the changes in the thickness of the material worked: on, whether such change is in. the front or the rear of the presser foot, zorion one side orthe other side'of the same.

Other o'bj-ects 50f: this invention will be apparent as the'specification'of the same proceeds, and,

among: others; I may mention: to provide a presser foot for sewing machines of the type indicated whichwill be simple. in construction, inexpensive to manufacture, and which will be adaptedto be easily applied to present day sewing machines without any change in their construction.

in section, the section being taken on the line 2-2 of Fig. 1;

Fig. 3 is a sectional View of my presser foot, the section being taken on theline 33 of Fig. 2.

Referring. now. tothe drawings more in detail bychara'ctersof reference, the numeral 'lllindica'tes my. novel. presser. foot, inv general, being composed of twommainnparts, an upper securing member 12, and. a. lower operating member or presser foot proper 3. .The upper or securing member I2 is of the form indicated in Figs. 1 and 2, and is of channel shape, so that it mayfit on the. presser. foot bar. Miof. the sewing machine, Whereon it may be removably secured, as usual and well known in this art, and as indicated by the screw IS.

The lower forward end of the securing member E2 of my presser foot consists of a forwardly projecting element or ear I6, through which passes a pin l1 carrying my presser foot proper l3, as will be more fully explained presently. A hole l8 in the ear l6 for the pin I! is of a larger diameter than said pin, through which a transverse inclined movement of the presser foot l3 on the pin I! will be allowed, that is, either the right hand side, or the left hand side of the 2 .presser foot may be lifted; like-when a onesided added thickness, or other such obstacle, will come into the path of the presser foot;

The presser foot rproper preferably is in a casting, having a rear part 13a from which-project the twoforward branchesor legs- I3b and I 30, forming a forked construction =fr the front thereof. The rear-portion may have a-central axial recess or slot 19 intowhich projects theear 16 of the securing member l-Z. Apin 20 is secured across and in the front branches 13b and l-3cvof the fork, and a left hand toothed wheel :2l land a right hand similar wheel 22 are. rotatably arranged on the -pi-n.2 0, said wheels preferablyvprojecting below the lower surfaces 23. of the branches 16b and I30. Theneedle-flofthe sewing machine will operate in the free space 25 at the rear end between the two branches 13b and I of the fork. A-spacer sleeve-20a'may -be-apinbefore, my presser foot proper l3 may alsotake up an inclined position either to the right or to the left, when necessary, on account of the play. between said-pin H and its hole l'8;

It will be seen from the herein description :and explanation, that my novel, self-aligning and self-adjusting presser foot attains all the aims claimed for it in the-introductionto this specification. My very extensive-experience with the same has been that; when: applying my= presser foot on any ordinary sewing machine, the 'same may perform operations, and turnout products, which it could not do before. So, for instance, with my presser foot unusually heavy and slippery materials may be worked on, like plush, velvet, or even several layers of them. Unusually fancy sewing may be done on them, approaching embroidery, and folds, heavy seams, etc., may be arranged thereon and still be sewn thereover, in a quick, efiicient, and smooth manner.

It will be seen that the two wheels 2| and 22 1 will grip the material worked on, will co-operate plushes.

With the present presser feet on sewing machines, if two layers of material are to be worked on, the presser foot will retard the upper layer, while the feeding mechanism of the machine will move the lower layer somewhat faster, so that at the end of the operation the two layers are entirely different and the upper one is con- 1 siderably back of the lower .one, while they started with even edges. With my presser foot, both layers will move in an even manner, even if the material is a. heavy, slippery plush, velvet,

or the like.

All the respective front and rear edges of my device are rounded, as has been mentioned with reference to the front 21 and the rear 26, and,

similarly, the intermediate central edges 30 and 3!. My presser foot proper is pivoted in both directions, for the front and for the rear, so that when an obstacle is to be passed and the front part 28 is raised, the rear part 29 willpress on the material and hold it, and, vice'versa, after the obstacle or thickness'has been passed by the front, the rear 29 will be raised andthe front 28 willhold the material; so that the material is'never without sufficient gripping, as against the presser feet used on sewing machines at present, which, even if they may pass a thickness or other obstacle, in such a case will for a time leave the material without grip with well known troubles and drawbacks :causedby it.

and having a substantially narrow lower end with a transverse hole therein, a pin in said hole and carrying said presser foot proper member, the diameter of said hole being substantially larger than said pin, whereby said pin may assume a transversely inclined position with respect to the securing member; two forwardly projecting elements at the two sides of said presser foot proper member, and two rotatable toothed wheels between said elements, each being .7 arranged adjacent to a respective forwardly projecting element.

' 2. In a presser foot for sewin machines, a

shank member adapted for connection to the sewing machine presser bar, a forwardly inclined narrow depending projection on said shank member having a hole therein, a presser Similarly, if a seam or other obstacle is: in the '"wayfof my presser foot on'the one side only "thereof, either the left side, generally indicated by the numeral 32, or theright side 33, may be raised andthe opposite side of the presser foot 3 will remain lowered through the action of the ""enlarged' hole 8, in the'ear l6, whereby the material, agaimwill be held in any such event, in

contrast with the deficient operation of the present presser feet.

-In a word, my presser foot adjusts itself to any unexpected obstacle, and will firmly hold the *material all the time, preventing a slipping -thereof, and assuring an even ip, even when the materialisof slippery character, or with a heavy nap, like the mentioned velvets and While I have shown and described a preferred embodiment of my invention, it is obvious that changes and variations may be resorted to in f the deta'ilsof itselem'ents and combinations, and 'I want it to be understood that I reserve my rights to all suchcha'nges and variations which are within the spirit of this specificationsand the scope of the claims hereunto appended. i WhatI claim as new, and want to protect by Letters Patent of the United States, is:

11A presser foot for sewing machines, comprising a presser foot proper member, having a smooth undersurfaceadapted to engage the material worked on, a'securing member adapted for connection with the'sewin g machine presser bar of said presser member being fork-like, having two arms at'the sides, a transverse pin between said arms, and two rotatable spaced toothed wheels on said pin.

3. In a presser foot structure for a sewingma chine, an elongated presser foot proper, a pin secured to the presser foot proper intermediate its ends and extending transversely thereof, a shank adapted for connection to the sewing machine presser bar, a hole in said shank of greater diameter than 'said pin and through which the pin extends for rocking movement of the rfoot in planes'parallel with the axis of said pin and in planes at right angles thereto, and a pair of toothed wheels rotatably supported by said foot adjacent its front end on an axis parallel with'said pin.

I AMELIA MAXSON.

REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PATENTS Number Name Date 511,539 Mundlos Dec.'26, 1893 621,146 Rontke Mar. 14, 1899 1,901,752 Karle Mar. 14, 1933 2,326,818 Balzano Aug. 17, 1943 2,384,454 Cosentino Sept, 11, 1945 FOREIGN PATENTS Number Country Date 5,887 Great Britain 1908

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