US955962A

US955962A - Presser-foot.

Info

Publication number: US955962A
Application number: US47322009A
Authority: US
Inventors: Alfred Grieb
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1909-01-20
Filing date: 1909-01-20
Publication date: 1910-04-26
Anticipated expiration: 1927-04-26

Description

A. GRIEB.

PRESSEB FOOT.

APPLICATION FILED JAN. 20, 1909.

Patented Apr. 26, 1910.

l/WE r05 AITOHNEY WIT M58858 UNITED STATES PATENT OFFICE.

ALFRED GRIEB, 0F ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFAC- TURING COMPANY, A CORPORATIQN OF NEW JERSEY.

To all whom it may concrn;

New Jersey, have inveuted certain new and useful Impmvements 1n Presser-Feet, of wlnch the follow ng 18 a specification, reference being, had. therein to the accompanying- This lnveutiolrhas'for its primary object I body fabric. for the stitching operation.

It is designed more. especially for the handling of lnsertion tapes compr sing two strips of fabriewith ribbedvoncorded adjacent edges. united at short intervals by feross-t'hre ads,'- somewhat resembling hemstitch work, thegdutercd'ges of which inser tron tapes, are i independently overlapped upon, rid stitchedlto-tlte margins of the body ztabrics to be joincd by overseam'stitches embracing the edges of each, and the layers ,opened outdo expose-the full width of the insertion ta e overlying. the marginal porttons of the odylfabrics' upon which it produces the effect of a marginally embroidered hortlait.

In .its preferred -iorm, the prcsser-foot is of the style coi'mno 1y; employed in connection. with the well-known S nger overseaming machine of the X0. 81 class, forming the subjeetof my pending applications Ser. No. 321,952, tiled June' 16, 1906, and Ser, No. 368,035, tiledApri-l 13, 1907; and it has upon its upturned forward end intermediate the edges a rigid guide rib and a recess-in its 'lower face in which is disposcdia spring gmdeJinger.scoured to the presser-foot shank at the rear end and having at the forward end anupturned extensmn passing through a slotm the foot plate ad acent the rearward end -of the .rigid guide rib'and adapted to rest upon the forward end of the same when the presser-,foot is raised. By this construction the insertion tap'e ma)- be led to the stitch-forming mechanism from a point considerably above the forward end of the pressenfoot to enable the rigid guiderib to ei'itertiie spaceintei'mediate the ribbed or corded edges of the strips comprising such tape ingniding the ame to t.he stitch-forming mechanism, while the yielding guidefinger serves to continue the direction of the insertion tape, but to yield under. the-action Patented Apr. .910.

of the feed-dog to permit the latter to clamp Be lhkIlOWIlillflt I, Amuse-Gamma citi;- the goods firmly against the lower face of zen of the UnitedStates, residing at Eliza- .beth, in the county of., Union and State of tape to the second body fabric, as in this operation the unevenness at op )osite sides of the guide-finger s such that -t 1e feeding is'.

done practically at one side only of the.

.presser-foot, so that the whole available area of the pressenfoot and fee -dog are required to perform the normal functions -of these members to properly advance the work.

The invention will be understood by refercnce to the accompanying drawing, in

\vhich v Figure 1 1s a plan of the presse'r-foot, Fig.

2 an edge view of the same taken from-the inner side, 1 ig. 3 a longitudinal section and Fig. 4 a pcrspcrth'e view of the pteSSetffo'ot from below the same. Fig. 5 is a )erseetive viewv of the spring guide-finger'detae ed from the foot. Fig. (i is a perspective view .of a section of insertion work, for which the present foot is designed.

The presser-i'oot comprises the shank portion 1 with lateral extension 2 containing the slot 3 adapted to receive the fastening screw for securing it to the presser-bar, and

is provided at its lower end with the rigid footortion 4 having upturned toe portlon .5 an cut away rearward of the same atthe inner side, or that adjacent the lateral ex tension 2 of the shank. The foot-portion 4 is provided with the usual transverse seat 4* upon which is secured by means of the fastening screw 6 the shank! of, the rear: wardly extending chaining finger 8wvhich extends slightly beneath the archedlowr 0r operative face of the auxiliary heel portion 9 whose shank 10 is provided with the'vertical slot 11 whereby it is'secured for verti-- cal adjustment bv the fasten'ingserew 12 to' the shank 1 of'ithe primary foot-portion.

The lower face of the main foot-portion iis provided with a longitudinal channel 13 from the bottom of which rejects m the upturned toe portion the rigid guide-rib 14 projecting slightly beyond theJface of the foot. Real-wardof the guide-r1h14', and 1n line therewith, the mam or primary foot portion is provided in its lower face with a,

longitudinal recess 15 to receive theyielding forward end portion 16 of, a spring guide-finger whose backwardly and upof the guide-finger upon the rearward face of the shank 10015 the auxiliary presser-foot member 9. The depending operative portion ide-finger has at. its rearward end an a rupt work-detaining shoulder 20, and has at its forward end an upwardly inclined extension 21 passing through a slot 22 intermediate the seat for the chaining finger shank and the rearward end of the rigid guide-rib 14, so as to rest upon the forward endof said slot as a stopshoulder when the resser-foot is raised and the yielding guide-finger is permitted to de" scend to its lowest position under the influence of its own elasticity.

Although the rigid guide-rib 14 and spring guide-finger 16 are independently mounted upon the foot/portion, they constitute practically a compound guide-member extending longitudinally of the foot and composed of rigid and yielding sections in tandem arrangement, this guide-member serving to receive the grooved or slotted face of the insertion tape at the forward extremity ofthe foot and affording a practically continuous guide for the same up to the stitching oint.

provement is designed more particularly to handle comprises two strips a and b of fabi'ic having corded or ribbed adjacent edges a and b, respectively, connected at intervals by cross threads 0, the edges being some what thicker than the cross threads so as to form a groove or channel entered by the rigid" and yielding guide-ribs 14- and' 16 of the resser-foot.

In the stitching operation; according tothe present improvement, the insertion tape is laid upon the body fabric (1 with themeniber a at one side of its 0 on Work upon the margin d of the body fa ric, and the parts thus disposed are subjected to the operation of the ovcrseaming machine provided with the prcsser-foot' of the present improvement, the tape being guided to the resser-foot from a point above the upturned forward portion of the latter to enable'the guide-rib 14: to enter the channel between the cords a and b, which are further guided intermcdiate the bottom of the foot ortion 4 and feed-dog by means of the yielding guidefingcr 16. After this stitching operation is performed, the other member I) of the tape is similarly-lapped upon the marginal portion e of the body fabric e and similarly united thereto by an ovfirseain; after which the body fabrics are opened out as represented in Fig. 6 to present the full width of the insertion tape-with itsopen work ortion intermediate the adjacent folded edges of the body fabrics, and .l the whole in the form 0f.a plait with overseamed or enibroidered edgesinterniediate the two body fabrics.

It will beobserved-that the chaining finger 8 is,disposed at one side of andparallel with the recess 15 and yielding guide-finger l6, and is spaced therefrom in such manner as to form an intermediate needle aperture 23, the operative portion 16 of the guidefinger extending intermediate the rearward en of the rigid guide-rib 14: and said needle aperture at the base of the chaining finger.

As the yielding guide-finger follows to a certain extent the rising and falling movements of the feed-dog, it has been found desirable .to form at the rearward end. of the operative portion 16'ofthe guide-finger the work detaining tooth or shoulder 20, which s'ervesto prevent the retraction of the work in case it is not entirely disengaged :therefrom in the return of the feed-dog to take a fresh hold for a succeeding feeding action.

As will be observed, the channel or depressio'n13 inthe footportion 4 is designed to provide clearance, so as to afford an efl'ective thickness for-,the rib 14 without having to project too far below the operative face of the foot it being desirable to maintain such foot portion, in order that the latter may be The insertion tape which the present 1111- permitted to firmly seat itself upon the operative face of the feed-dog for the effective action of the latter upon the work,

Having thus set forth the nature of the invention, what I claim herein is l. A'sewing machine presser-foot constructed with afoot portion with upturned forward end and having normally depending below its operative face a com ound guide-member extending longitu inally thereof-intermediate its opposite edges, said guide-member comprising. an upwardly yieldin section and a rigid section in advance tiereofland extending to the forward end of the foot portion. v I 2. A sewing machine resser-foot-comprising a foot. ortion w th upturned forward end provi ed with arigid longitudinal guiding'rib intermediate its edges, and a recess in its lower face in line with said rib, and ayielding guidesfinger attached to the rearward end of the foot and having an operative portion disposed in and adapted to recede within said recess. K I

3. A sewing machine presser-foot comprising a foot portion with upturned for- 1 allel with and at one side of said recess and 1 spaced therefrom to afford an intermediate needle aperture, and a yielding guiding finger having an operative portion disposed intermediate said rigid guide-rib and said needle aperture, said guide-finger having a spring shank attached to the rearward end of the foot to permit the yield of said operative portion within said recess.

4. A sewing machine resser-foot comprising' a foot ortion wlth upturned forward end provi ed with a ri id longitudinal guide-rib intermediate its e ges, and a longitudinal recess in its lower face in line with said rib v and a yielding guide-finger attached to the rearward end of the foot and having an operative portion formed at its rearward end with an abrupt work-detaim ing shoulder and disposed in and adapted to recede within said recess.

5, A sewing machine resser-foot constructed with a foot portion formed with a needle aperture and with u turned forward end and having normally epending below its operative face a compound guidemember extending longitudinally thereof intermediate its opposite edges, said guide member comprising a rigid section extending backwardly from the forward extremit of the foot portion, and an upwardly yiel in section whose operative portion exten s toward the same from a point opposite the forward side of the needle aperture.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALFRED GRIER,

Witnesses:

VICTOR E. SMITH, JOSEPH F. JAQUITH.