US2562780A - Braid or cord positioning device for sewing machines - Google Patents

Description

Jul 31, 1951 A G FERRIS 2,562,780

BRAID OR CO RD POSITIONING DEVICE FOR SEWING MACHINES Filed Aug. 1, 1949 Gttornegs Patented July 31, 1951 BRAID R CORD POSITION ING DEVICE FOR SEWING MACHINES Albert G. Ferris, SeattleQWash.

Application August 1, 1949,.Serial No. 107,898

Thispresent invention relates to sewing-ma chine attachments and more particularly toan attachment intended for use with the'usual presser foot and it is so arranged that it accurately positions the cord cr braid and at the same time secures the attachment in accurate position, even though there be some variation in the exact construction of the presser feet with .which it.

is used.

A large number of attachments have been;

provided for sewing machines in-the past, having as their purpose the positioning ofcord or braid and to assist in the sewing of the same in place As a general rule these devices do on material. not adequately serve their intended purpose. In the first place, it is essential that a device of this-orderbe accurately positioned with respect to the line of stitching so that it in turn can accurately position the cord or braid but as sewing machines habitually last a long time, theminor changes made, even in standard lines of production, are'such that no one form of observed attachment will adequately adjust :to insure a definiteand accuratepositioning of the positioning device. In -thepresent invention, it is believed that this objection has been overcome and a device produced that is very simple to make, and, which can only be secured on a presser-foot 1 in an accurately positioned manner.- i Y The principal object of this present invention therefore is to provide an inexpensive braiding attachment, which isadaptable for use with the convention presser-foot found on the average sewing machine.

A further object of this invention is to provide a braiding attachment whichis resilientlyselfa' centered in the needle slot'of a presser foot, so as- Z'Claims; (01. 112-139):

to insure its accurate positioning-at all times and thus make it possible to accurately stitch braidin place.

A further object of this present invention is to provide a braiding attachment'for'the conventional'presser foot, which in no way. interferes with the normal functioning of the presser foot, or the feed mechanism disposed immediately below it, and which is so constructedth at the braid or cord can be very quickly threaded through the same, and then because of its-ability to selfcenter itself on the presser foot and its resilient clamp arrangement; it can be easily secured on the presser foot Further objects, advantages and capabilities will be apparent from the description and disclosure in the drawings, or: may'be'jcomprehended or are inherent in the device. I

Inthedrawings: fl: i

Y Figure l is a perspectiv e view of a conventional sewing machine presser foot and needle assembly showing this present invention secured on the presser foot.

;.Figure 2 is a cross-sectional view taken in'the I plane of line 2-2 of Figure 1. Figure 3 is a vertical cross-sectional view taken.

along the stitching axis of a conventional sewing machine. 7 1 I Figure 4 is a fragmentary perspective view showing the underside of a presser foot, with the cordingattachment shown generally in the positionof threading the braid through thedevice, preparatory to assembling the unit for use with certain parts being shown in section.

Referring more particularly to the disclosure in the drawings, the numeral l0 designates a conventional form of presser-foot, which is held in position and actuated by means of the presser bar lifter l2. Associated with the presser-foot is the sewing machine needle (4, positioned by the mechanism of the sewing machine for vertical reciprocation and passing through the presserfoot slot [6. Normally disposed immediately be-. low the area covered by the horizontal portion of the presser-foot, as 18, is theratchet feed, all of these elements being conventional and sup plied with the usual sewing machine. Experience has proven that any attachment to function with ease and exactness should not disturb any of these elements and their functional relationship with each other, and as a consequence this present invention is so arranged as to use all of these elements without, in any way, modifying their functions. This present attachment is formed, preferably, of a single piece of resilient sheet stock, of thin enough gauge so that the resilient character of the material can be fully made use of. The attachment is fully secured to the angularly dis;

posed portion of the presser-foot, which normally consists of the two leg elements, as 20f and 2!. Theattachment' is provided with a downwardly extending f eed portion 30, whichforms a centerf ingmeans for the attachmentfand, also a guide for the braid or. cord.

To properly perform its intended function this guide and centering means must have very appreciable extent longitudinally of the stitching plane. It is then provided with the flat top'portions as 32 and 33, extending on opposite sides of the V portion 30, and extending outwardly therefrom su'fliciently to fully over-lay any of the conventional presser-feet. These members are then, turned downwardly to provide the side- Walls as 35 and 36, and then have iii-turned or reversebent portions, as 38 and 40. The inside spacing between walls 32 and 38, and 33 and" are normally the same, and should be slightly in excess of the thickness of tongues 20 and-2L. These various parts have a definite co action among them, first of all, V 30 must have suiiicient transverse extent so that it will bear on the inner margins of tongues 20 and 2| or, in other Words, be sufiiciently extended so that the V will never fully seat within groove Hi. This will mean that the inner surfaces of legs 32 and 33 normallywill not bear upon tongues 20 and 2|, but that the inner surfaces of the inturned ends 38 and 40 will be in resilient contact with the bottom surfaces of tongues 20 and 2! after the" showing of Figure 2, and thus definite positioning The V must is provided for the attachment. have considerable longitudinal extentso that it will accurately position the V in slot [6, and then, due to the resiliency of the material of which the.

attachment is made, the V is secured in the slot I6, by the reaction of the inner surfaces of ends 38 and 40. It will follow that, normally, the inner' surfaces of the vertical portion 35 and 36' will not bear on tongues '20 and 2 L This is an'optimum condition which should be'achieved in order that, on one hand, th'e'device will fit'a large number of slightly modified presser-feet, and on the other hand, it can beeasily removed and replaced with the assurance that at everyreplacement,"

the V'will come to rest at the sameposition and accurately align the braid or cord with the travel of needle H.

In order to provide an adequate guide for braid Bfth braid must rest within V 30, as is shown throughout th various views, and it must be retained generally therein, by means which'per m'it the easy insertion and removal of the device may be obscured or lost.

As a keeper for braid B, there is provided the generally horizontally disposed plate or keeper 42';which extends well over the center of V 30,

as will'be noted probably best in Figure 2, and

then has a vertical portion as 44, which finally terminates in a second substantially horizontal portion 46 forming a foot plate. This arrangement provides a-definite keeper for braid B, and

it 'prov'ides in the member 46, an additional preliminary presser-foot, so as to smooth out any large wrinkles in the material to which the braid is being secured-j It also serves as a safeguard fol-any materials which might otherwise becometangled in the 'braider, and for this reason ithas' been found desirable that the auxiliary presser plate 46 be-disposed appreciably below the bottomjof the normal presser-foot tongues 29 and 2 I. The second purpose of the braid keeper-is to provide a convenient means of threading the braid through the attachment. This is achieved by the spacing of plate 42, from plate 32 by' a slot 48, of a'width normally greater than any ofthe braid or cord that may be used with the With such an arrangement-it will be j use on the presser foot and the operator is ready to proceed with the stitching.- Any time it is'de sirable to withdraw the cord from-the device; a reversal of this procedure effects the operation very conveniently. With the braid B entered in slot I6 and extending upwardly, it can easily be threaded into using position with place on the presser foot.

- It will be apparent, it'is believed fromthe fore-a the device in going description and by a perusal of the accompanying drawings, that an attachment is provided which is simple in use, is resiliently adaptable to a wide range of presser-feet'and which is automaticallycentered and locked on the foot in the accurately aligned position required for proper operation.

What I claim is:

LA cording and braiding attachment for use on the presser foot of a sewing machine, consisting of; a single piece of resilient metal having an axially aligned positioning and guiding V, with a cord receiving portion, disposed with the open side of said V uppermost; substantially horizontal top plates extending outwardly from each side of said V; "downwardly directed side plates continuing from said top plates; inwardly directed clamp plates continuing from said side plates, disposed parallel to -said top plates; said clamp plates adapted to co-act with said V to position said attac'm'nent to a presser foot and secure it thereto;

a-keeper, disposed in longitudinal spaced relationshiptosaid V, havinga top portion in the same plane as said top plates and extending transversely beyond the cord receiving portion of said V; a downwardly positioned extension of said i keeper anda foot plate secured to said keeper extension and disposed parallel to said clamp platesand below the'plane of said clamp plates.

2. A cording and braiding attachment for use onthe slotted presser foot of a sewing machine, consistingof: a single piece of resilient metal having an axially aligned positioning and guiding V, with a cord receiving portion, disposed with the open'side of said v uppermost; said v having greatertransverse width than the slot in the presser foot it is associated with; substantially horizontal top plates, extending outwardly from each side of said V; downwardly directed side platescontinuingfrom said side plates; inwardly directed clamp plates continuing from said side plates, disposed parallel to said top plates; said clamp platesadapted to co-act with said V to position said attachment to a presser foot and secure itthereto; a keeper, disposed in longitudinal 'spaced relationship to said V thereby providing therebetween a transverse'slot, having a top portion-in the same plane as said top plates and extending transversely beyond the cord receiving portion of saidV a downwardly positioned extension of said keeper and a foot plate secured to said keeper extension and disposed parallel to said clamp platesand below the plane of, said clamp.

plates.

ALBERT G. FERRIS.

REFERENCES CITED The following referencesare of record inthe file of this patent:

UNITED STATES PATENTS Number- Name Date 101,446 Eck Apr. 5, 1870 507,489 Douglas Oct. 24, 1893 614,398 Laubscher Nov. 15, 1898 1,518,659 Johnson Dec. 9, 1924" 1,622,171 Anthony Mar. 22, 1927 1,685,194 Forseth Sept. 25,1928

FOREIGN PATENTS Number Country Date 298,065 Great Britain of 1928

Images