US1411344A - Presser foot for sewing machines - Google Patents

Description

C. GRIM.

PRESSER FOOT FOR SEWlNG MACHINES.

APPLICATION men ocT 1920.

1,41 1,344. Patented Apr. 4, 1922..

a i 1 c fi fi 'j 4 E j I? F2 8 2/ i 6 270,5 Gi ly jlffg w 2 Qj m ttorne y;

, which have, a long nap, for, example,

nmrsn STATES PATENT OFFICE.

minus GR IM or cnIcAeo 'ILLINoIs, ASSIGNORTQ o. w. RI'cHARpsoN a co.,or

' CHICAGO,

rnmnors;

rnnssna roo'r ron SEWING ACHIN S.

Specification of LettersPatent. I Patented Apr. 4, 1922 Application' filed October 4, 1920. Serial No. 414,391.

To all whom it may concern:

Be it known that I, CYRUS Gnnxr, a citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented a certain new and useful Improvement in Presser Feet for Sewing Machines, of which the following is a specification. This invention relates to a presser foot for sewing machines and has for one ObJBCf toproduce a presserfoot which is adaptable for, use with thick heavy rugs or carpets high pile chenille carpets. Other objects will appear throughoutthe specifications and draw.- ings from time totime.

The invention is illustrated more or less diagrammatically in the accompanying drawings, wherein; r r

; Figure 1' is a plan view with parts 1n section, j p I Figure 2 isa side elevationof the same with parts in section. q 7

v Figure 3 is a side elevation of the presser foot taken from a side opposite'to that shown in Figure2. v

Figure 4c is a vertical section on line 4, 4; QfFignQ."

.: Figure5 isia plan view of, amodified presser foot. V 1 5 V 1 Figure 6 is a side elevation of the same.

Figure 7 isa side elevation of theopposite side of the presser foot. Figure 8 is a vertical section on line 8, 8 0fFig.5. 1 1 I Lik'eparts are indicated by like characters throughout. 3 I

is the base onthe frame-of-a carpet upon which an upper surface of chenille A isfastenedby. means of a plurality of'war p threads A A which engage the-chenille ofthe carpet frame for the 'fpurpose of 'securing the ends of these threads when a portion of the carpet has been cutoff. They are. arranged substantially parallel to each other as shown in Fig 1, and are then stitched firmly to theupper surface of the carpet frame by means of cross stitching A. In order to do such sewin on a sew ing machine a specialform of presser foot is necessary and it is the form-of the presser foot to which this invention relates. A presser foot to be used for such purposes must press aside and to some extent press down the chenille surface of the rug during the sewing operation. This is necessary in order that the cross stitching will be brought closely up against the edge'of the chenille at the end of the carpet.

' In the finishing of such carpets it is desirable after the threads have been secured in the manner illustrated in Figure 1, to add a binding: over the edge of the carpet to improve the appearance of the edge. It is also desirable to do this by machine, and for this the presser foot illustrated in Figures 5 to 8 inclusive'is adapted although either of the forms shown could be used for either purpose.

B is a presser foot having an upwardly extending supporting shank B which is desirable to be secured in any suitable manner to the sewing machine. 13 is the frontend of the presser foot and is curved as shown to intercept and bend or press aside the nap of the rug as illustrated in Figure 1. B is a perforation in the presser foot through which the needle or needles of the sewing machine may penetrate. It will be understood that this feature of the presser foot is capable of great variation as the presser foot is adaptable to many different types of sewing machines. B -is a lateral extension on the presser foot adapted to press'down the: nap of the rug inthe manner shown in'FigurGS land 8. The form of presser footv shown in Figures 5 to,8 inclusive is; adaptedfor a machine which has a plurality of needles and it differs in anumber of respects from the-presser foot shown-in Figures 1 to 4 inclusive.

Each of the forms is designed, however, to manipulate the na'p of the carpet so as to permit the sewing close up, against the chenille or nap. This is; done by first-pressing ,aside and then bending downfthenapby contact withthe parts of the presser foot.

- Referring now particularly to 5 Figure .2 0 represents partjof a sewing elnachine in which; the-needle Cf is. mounted for vertical reciprocation. D is the work table of the sewing machine upon which the carpet is placed and across which it is moved during the sewing operation. E is the set plate by means of which the work is moved along through the machine and under the needle. The mechanism for doing this is well known in the art and forms no part of the invention and is therefore not shown or described in detail.

In the form shown in Figs. 5 to 8 inelusive the presser is similar tothe. torm shown in the first four figures exce t that it is formed to permit sewing of different stitching and when so desired with a plurality of needles.

manner as is shown in Fig. 1. Tnsteadof having a projecting wing as is shown in the first form, the body of the presser foot is under cut with the entire upper side portion of the pressure foot overhanging its lower margin. When it moves with relation to the nap, the overhanging portion of the presser foot depresses and bends aside and'down the nap in exactly the same manner as the overhanging wing shown'inthe first form. The additional structural elements appearing in this second form which is apparentlydifferentiatedfrom the first forin have no particular function in' the pressing function, but are there as above stated to permit of a differentmanner of sewing and to permit of the use of a plu rality of needles.

The use and operation of this device are as flfollows In-the carpet to be finished a limited amount of the chenille surface is picked back from the edge; The warp threads which hold the chenille to the carpet frame are then arranged substantially parallel to each other andin-thiscOnditiOn the carpet is ready to be-finished. It is put into the sewing machine in which one form of the presser foot is mounted -3I1(l'1S then run through the machine and sewed 1n the manner illustrated in Figure 1. During this operation,

some of the frameof the carpetfrom which the chenille has been removed may also be out off so as to narrow the uncovered portion of the carpet. This may or may not be done during-the sewing operation. Asthe carpet moves through the machine the chenille is contacted the front of the presser foot which pushes it aside nearest the chenillev base over the lateral extension of the presser foot and is forced aside and bent downward. At this point the sewing takes place, and

by reason of the displacement of the chenille The presser foot rests flat, upon-the cloth'asshow'n in Fig. 6 in the same manner as does the other form of presser foot shown in Fig. 2. \Vhen so poit-is possible to sew directlyup against the chenille.- When this sewing operation has been completed the carpet edge is secured from raveling but it'is Somewhat unsightly. The carpet is therefore subsequently run through a machine" which is adapted to produce upon the'edge of the carpet .a binding which will'overlap the uncovered portion of the carpet and theastitching whichhas just been put upon it. Thus the stitching is concealedand the binding comes directly up against the chenille and furnishes an attractive and workman'like edge to the carpet.

For this purpose it is necessary-gas before,

that the chenille bepushed aside and down. The two forms of the device fer only in that they are adaptable for lifferent types of machines. The for-n1 illustrated in Figures 1 to 4 'is adapted to a V single needle machine and the form illustrated in Figures 5 to 8 is adapted to -a machine having a plurality of needles. :Of course many such changes might be made to adapt the presser foot'to various types of needles and sewing mechanisms.

an operative mechanism still it is-obvious that many changes both of form, size and arrangement of partsmight be 'madewithout departing from the spirit of my inven-' tion and I wish therefore that it be taken as in a sense (ha-grammatical. 1 4

I claim: 1 l

1. 'In'a pressure foot fora sewing machine adapted for'use with fabric having a long nap, a main pressure foot body, a curved forward projection adaptedto contact and to straighten up the nap, a lateral;exten,

sion inrear of said projection, said exten;

extension in rear of said projection; said extension adapted to contact and {to press sald nap aside and down. said forwardp-rojec'tion curved laterally away fIOIITSaid rearward extension.

Signed at Chicago, county of Cook, and

Stateof Illinois, this 30th day of Sept, 1920. V

CYRUS eRr 80. Although I have shown in my invention 10.0 tact and to straighten up the nap, a lateral

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