US1927601A - Presser foot for sewing machines - Google Patents

Description

sept. 19, 1933. H' W|LL|$ 1,927,601

PRESSER FOOT FOR SEWING MACHINES Filed May 24, 1930 Patented Sept. 19, 1933.

Harry I to Union L.' Willis, Grand Rapids, Mich., assig'noi'- f o Special -Machine Company; Chicago,

'5 .Ill., acorporation of Illinois. Application May ,24, '1930; serial' No. 455,889 't 4 olaims. w (cl; 1124235) The invention relates to new and useful improvements in a presser foot 'for .a sewing machine,V and more particularly to .agpresser -foot known as the roller type. if! An object of the invention is toprovide a presser foot which has a rotating movement im- Vparted thereto by the feed ofthe fabric,and which is positively held from retrograde move'- ment. during the idle strokeof the feedingmech- -l` anism..l` x

t A furtherl object ofv the invention is to provide a presser foot' of the above type which is provided with teeth so shaped as to insurethe material being operated upon having a firm gripping w contact with vthe roller foot at all times.

` In the drawingz- Figure 1 is a rear view of a presser foot embodying the invention and showing'the position] of the same relative to the needle, z

' Fig. 21s a side view of the same and showing j the-.position and .arrangement of the feed dog.V

' Fig. 3 is aside view of the roller foot.

Figi` is a sectional view on the 1ine4-4 of Fig. 3...V i "1: 2-5.

Fig..5 is a detail showing the supporting'member on which the roller foot is mounted.

The inventionis directedto a presser foot for sewing -machines, and more particularly toaJ presser foot known as the' roller type, that is the fabric engaging portion is in the form ofr a roller mounted forrotation. This roller is carried by a shank member which is mounted in the usual way on a presser bar. The presser foot roller is provided With teeth which project at the contact portion thereof with the fabric in the direction of the feed of the fabricfiand said foot is mounted to turn during the feed of the fabric. Means is associated with this roller'l foot for preventing 'retrograde movement thereof. When the 'feed reaches the end of its stroke and the movement of the fabric in a forward direction ceases, the.

roller presser foot will remain in this fixed Vset position and no rearward pull of the fabric on the foot will displace it from the position to which it has been fed by the feeding mechanism.

Referring' more in detail to the Vdrawing, the invention is directed to a presser foot of the roller type, which foot is indicated at lin the drawing. This roller foot 1 is of course circular in Outline, and the peripheral edge of the roller foot is inclined as indicated in the drawing. This enables the presser foot to be set so as to rotate.

in a plane at an angle to the plane of the work support and therefore it can be set so as to work very close to the needle which is indicated at 3 adapted tobe used .use of lthis term.

clockwse direction `as viwedrin-Fig; 2., n feedingmechanism is `preferablyt of ,theffon'rthefabric. and

. Wise direction..

Justment.

` center of rotatin of the roller foot.

iii the drawing'. 'This'oiieifrot is eart'culafl in connectionl with glove. sewing machines -and referred to asa fabric lnthebroader senseof the TheV peripheral.edge iof the presser foot is 'provided Vwi-th``tee t 1- 4; Theseteeth 4 arepreferably inclinedslightly in fa countermotion type, i and includes. a. 'feedj dog` indicated at 5 in `'the drawing.` AThis feed ;dog'has a move-` the materialoperatedfuponis ment in the directionof the arrow inFig. V2 for feeding the fabric which then is disengaged from forv` the nextfeedingcycle. The feedingmechanism particularly in this case to themountnig of this returnsi'through theidie stroke.

has not been shown as vit isof .the 'usualtype .in a'sewing machine, The inventionis directedv i roller foot so thatsaid roller-footwhile it is free v to turn in a clockwise gdirection as viewed in FigL it is held from rotation ina'counter-clock- The .rollerfoot is mountedV on-a bracle't Vwhich includesf'a slee've: 6- adapted to .be secured tothe; presser bar whichV of course is ciprocation in .the needle head and springpressed This 'bracket i mouhted for re-I downwardly in the usual manner. alsoxincludes a laterallyprojecting.'armji'l` on' which a support ,8 is mounted for horzontal. 'ad- This support 8 isin, two Sections piv-; otally connected andV is'of aiconstru'ction similar to' that shown in the patent to Long N.'1,625;616`,H

granted April 19, 1927. The supporting shank for the roller is indicatecl at 9 in the drawing; andthis shank is mounted in the support 8, .The shank has an opening lotherethrough and .a

recess 11 in the outer face of the shank; -There foot is provided with a recess 13, andfwith a hub The hub 14 has anopening therethrough, and is threadcd to receive a screw 15. This hub extends through the opening 10, v'and a 'Washfer 16' located in the recess 11 serves as' a means'for'seis also a pin 12 carried by this shank. The roller* the recess 13. Said headed portion has a notchv 19 'whichflengages the pin 12. This holdsthe bearing slee've'from rotation. and Valso the theaded portio'n Acarried 'thereby -This Vheaded portion is circular, but is eccentricallyi set relative to the l clutch 'roller 20 is' located in the recess l13. Thev inner .face'of this recess l'jiscylindrical and concentric to the center of 'rotation of the roller foot. A leaf spring 21 is secured to thehead 18 of the sleeve 17 and bears on this ro11er`20 normally imparting a counter-clockwise movement to the roller around the center of rotation of theroller foot. This forces theroller'into wedging' engagement With'the headed portion of the sleeve and the roller foot. Any tendency of the roller foot to turn in a counter-clockwise direction as Viewed in Fig. 3 will be prevented by this clutching` roller 20 through its Wedging engagem'en't i with these surfaces. The feedof'the fabric is in the direction vindicated by the arrow in' -Fig."2. As the fabric is fed the roller foot will turn freely in a counter-clockwise direction as viewed in this its strokeany, pull of the fabric in a opposedfto that indicated by the arrow will cause the fabricl to be'gripped bythese teeth' 4 of the roller foot and the rollerv20 will prevent the roller foot from'turning. This insuresthat the fabric when fed` a givenjdistance will be held firmly after the feed dog has been disengaged therefrom, and a uniformity of Aa feeding of the fabri'c isjthus accomplished.

' V'It will be understood that otherways may be used for mountingtheroller thanl that specifit cally described. VThe essential feature i ''esides=in` a means which Will prevent said roller foot from tact With these surfaces so that any tendency 'of the'roller foot to turn in na retrograde directio'n is prevented. 'It is also .obvious that minor changes in the details of the present construction i may be made without departing from thespirit of the invention as set forth in the appended claims. 'i ii I-Iaving thus'fully'described my invention, What .I 'claim as new and desire to secure by Letters Pat- 1. A presser foot for sewing 'machines comprising a support, aroller foot, a bearing sleeve fixedly carried by said support, said lfoot having a hub When the feed dog reaches the end of VdirectionA 1,9127,eo1 I extending through said sleeve, means attached to said hub for holding said foot on said support so that it may be rotated in the Vsleeve by the movement of the fabricv by the feed, and means associated .with said roller foot and bearing sleeve for preventing 'retrograde movement of the foot;

2. A presser foot Vfor sewing machines'comprisingia support, a'roller foot, a bearingsleeve fixedly carried by said support, saidfoot having a hub extending through said s1eeve,`means attached to said hub for holding said foot on said support so that it may be rotated in the sleeve by the movement of the' fabricfby the feed, said roller foot Vhavingv a recess providing a concentric 'clutch face, Vsaidgsleeve having an eccentric clutch face located Within saidrrecess, and a clutch member yieldingly'forced into engagement With saidv clutching faces and operati grade movement of the foot. O w. w

3. A presser foot for sewing machines comprising a support, al roller foot `mounted =thereon ng to prevent retroand rotated by the movement` of the fabric by the feed, said'roller foot having teeth projecting at the time of engagement with the fabric in the direction Vof the feed of the' fabric, said lroller foot having a recess in the face thfl'eof adjacent 'the support, a supporting hub,a sleeve fixed to said support in whichrsaid hub'is'mounted',`means for holding said yhub in said sleeve and the sleeve 'in saidsupport, and means associated with the roller foot and support for preventing retrogradel movement thereof. i

4. A press-er foot for sewing machines comprisi ing a'support, a roller foot mounted thereon' and rotated by the movement of the? fabric by the feed, said roller foot having teethprojecting at 'the time of "'engagement'with the ,fabric in the directionof vthe feed 'ofthe fabric, said roller foot having a recess in the face :there'of adj'acent the support, a supporting hub, a sleeve fixed to said support in which 'said hub is mounted, `means'for holdingsaid hub in said sleeve and'the sleeve in said support, said'sleevel having a head'p'ro vid'ed With an eccentrically arranged clutchiface,

'said roller foot'havng'a'v concentric clutch face,

a clutch roller 'located' between said faces,"and

Va spring forcing said roller into contact with the clutch `face`s,jsai:1l'clutch faces .being'disposed so as to prevent retrograde movement of the roller foot. i i

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