US2363976A

US2363976A - Sewing machine attachment

Info

Publication number: US2363976A
Application number: US462642A
Authority: US
Inventors: Wallace E Kline
Original assignee: PURITAN Manufacturing Co
Current assignee: PURITAN MANUFACTURING Co
Priority date: 1942-10-19
Filing date: 1942-10-19
Publication date: 1944-11-28
Anticipated expiration: 1961-11-28

Description

Nov. 28, 1944. w. E. KLINE 2.353,.976

SEWING MACHINE ATTACHMENT I Q Filed 001;. 19, 1942 INVENTOR Wamm fowq/Pz) llz A f ATTORNE in-eachof the views; -'and'-in which: I a n 1 'is a side elevation 'view o fa ri aittach l;

Patented Nov. 28,1944

' e v it i T fem;

" Wallace KlineiTex-ryville;IMomoSSignor to} ThePuritan"Manufacturing-Company, Bosil'hiswinventiomrelatesitorsewingimachines; partinularly of -:the type imid'rk-ind zused: ;in stitching heavy materials, :fonexample,iinitheetitching I'of soles ofnshoes. vMoreewzrticuiacriy, thes inventicnrelates to :an. attachment ifor machines of this type :and' kindidn the .form :of Ea,-w.orkpiece supporting plate and. feedtrmember disposedibeneei-th themresser foot of-ithe ma-chine zto facilitate fi ree and easy guiding of theworkpi'ece throug'h the machinegwhileatathe same time; insure firmsiipportnfithe workpiecein proper position hene'Eth; the needle .or =st1tching mechanism 10 f the a Flhe'tnovePfeaturesoTthe invention wiirbe-b'est un'tiers'tood'ffrom' the ?followingdescriptions when taken :together with the a. ccompetnyin'g iirawing,

in' which certain -ernbod iments 0f the invention are disclosed, and'iin which the separate parts are designeited bysuitagble reference ':harract ;e rs

ment, partly in section. I T "Fi "2?is "a, front :levition viewfl f Fig. 3 "is 'a, plan "View of the? structure i'a's "seen In sewing maehines "of con 01; eration, it has beenIthe commonjpreriticetto'employ fixed workpiece supporting flpleites ftoeneiith. the 'presser'ff'ootsand needle mjecha riism of lithe machine, and particularly, ,fin the I stitching the :sOles "of s'hos where flifiicultjhas been experienced infeedi ng .or giiigiin'g the workpiece through, the -machine.

It is; 'the purpose of fmy invention to eiiniirialte these objectionable features hy prmiiding' a plate attachment, comprising an 'a' igulafly 'iiisnosed workpiece snpportingsurface havingc'anirregiila r' surface, preferably "in the iorm oiff longitudinaii orrecessed 4 portion of this,pia;t ec e ennioal ;mu gih ened surface ,Whel or roller,v freelygrlctatablemcn.

.en axis, .arranged hentrally'gheneathc the ,plate anqiflontheisupportzforgthe piate fJZhis-hevelled; and eorrugaitedontooth-like roller, is arranged to;

engage the workpiece where .the stitching orpemtionmis vperztonmed ,athereon @to permit-flee moveperatioii ,01

' provided with ithe' usuall elongated' aiperture' teeththereon' and todispose withinianfia perturedf mentof the workpieceiover-theesunporting plate;

1 whileat thesame time zma intaining iinborfjhfl time-with said plate :an :angtnarityto the work;-

workpiece imposition durin 'the st itching ofper'alj tion.

TI-n v fit-he :accomnonizine skewing g1 shave zillus i trelted 'one adaptation of *theinvntion {at d Figs. 1 and 2, -|O'represents:a'siipportingbalfithe lower endof whichiis recessed, QSf S en at "I"! and a iertured. Qas rseenat L2 formounting lthefibarl in connection with asewing machine iTheeper -i tunes .1 2, elongated vto properiyncentralize,

theattachment with respect to:the.-needle1l.3 of;

thesewing machine. i

, rIniFi'g; Lof'fthe draiwin ggfl represents: a presser foot, '-.the';lower hook or foot ze'nd l 5 :of which throulg h-rwhihthe needle l3"opera tes.

Secured "to thempper end of the ri'atr' l a workpiece supporting plate 11; held mf b iti n; Qn thebar by two screws l8. The end'fpoitio-n I9 .01 -this plate Whibhiis arranged on the .bar

is JfiaQt, whereas the workpiece supporting .end ,20

is ,bfisetkpr. angularly disposed,-v in ,a "downward direction. Thisend being-curved slightlywtoform'- a.v lipas seen-iat -2-I The upperisurfaeeof the anv gulariworkpieceusupportingendPhasflongitudineil teeth :or projections 22 :to. firm'ly 'engajge'a work-f rp'iece' in -retaining th'e same against "shifting thereon particularly, during' the stitching operation; These teeth or corru'gations, however, do

not interfere with the 1 novement.or feed M the workpiece t'throu'gfh the machine.

freely receive a; i'workpiece ,supporti'ng wheel-for roller: 25, whereas the other :end 1 of ithe aperture hits an offset portion 76 to novide'*cleariincefor screw 2.8,.ha.,ving,a lockmitlfi, fIhegslottedsheed 30. of :thejscrew .gor" stud supports; the -.oonica1 bevelled-1911M against displacementifiliomthezbam i and atiiis stud forms Ian axisxuponwhichtthen oller" is rfreely nzotatable; in other words, sufficient clearance is bro'ride'd in the 'monnting of the s'tufl to provide affree rotation 'ofthe *ro'll'erf upon h 3 5A, 3 r i I y e bevelled surface .of .the iro'ller is .provided with .c'ircnmferentially:..spa.ced.-;nibs :31, which-in.

turn areiorinediintoteeth or gprojectionsbyicir cumflerentiahg-rooves 312, and theseiteeth ror pm". jections will engage the workpiece and hy reason f'lfhe central portion QTQthepIate-has a large a pertureuoricutoiit 23', substantially of thejorm' illustrated in .-Fig. 3 of the clraivizing.v v .The dove tailed end "of this :aperturevrb'eing adapted-to 21, secured .130 the p'per end .of water in. and retained "against 'displacement therefmmwhyarsetl element.

of the free rotary movement of the roller the workpiece'is freely fed through the machine in the stitching operation.

In Fig. 1 of the drawing, I have diagrammaticallyillustrated, in section, a part of the sole 33 of a shoe, part of an upper 34 in the operation of stitching the upper to the sole as indicated at 35. By reas'onfof the angular'support of the' workpiece by the end portion 20 of the plate H, as well as angularity provided by the roller 25. The workpiece is supported in a position which facilitates the stitching operation as at 35,- allowing the presser foot end IE to snugly fit along the irregular contour of the upper of a shoe during the stitching operation. The teeth 22' offthe supporting plate, as well as the teeth of the roller retains the workpiece at all times in proper position, and the portion 36 of the roller which pro- J'ects above the surface of the plate engages: the workpiece to'slightly lift the same from the plate in the feeding operation thereof. v

It may be said that the workpiece support comprises a unit presenting onebevelled or angular surface, and thissurface. is divided into,a-stationary or non-movable portion and a movable claim as newand desire to secure by Letters Patent is: 7

1. The combination with a sewing machine of a workpiece supporting attachment, said attach.

ment comprising a plate having a downwardly inclined surface arranged beneath the needle of the machine, said surface being formed by elongated tooth like projections extending in the direction of the feed of a workpiece beneath the needle of the machine, means exposed through saidsurface engaging a workpiece; to aid in the operation of stitching the same, and said last named means comprising a freely rotatable 2. The combination with a sewing machine of a workpiece supporting attachment, said attach ment comprising a plate having a downwardly inclined surface arranged beneath the needle of the machine, said surface being formed by elongated tooth like projections extending in the direction'of the feed of a workpiece beneath the needle of the machine, means exposed through said surface engaging a workpiece to aid in the operation of stitching the same, said last named means comprising a freely rotatable element, and said element having a bevelled surface conforming to the inclination of the inclined surface of said supporting plate.

3. A workpiece supporting attachment, for

stitching machines, said attachment comprising a post, an axis arranged at right angles toj'one end-portion of the post, a roller freely rotatable on said axis, said roller having'a' bevelled surface adapted to be engaged by theworkpiece and arranged substantiallyin' alinement with'the stitching mechanism of the machine at one sideof the needle of themachine, stationarymeans secured to said post adjacent and partially enveloping said roller forming asupport for the workpiece, and said means having an upper surface conforming in part to the bevelled surface of-said roller.

4. A workpiece supporting attachment for stitching machines, said attachment comprising a post, an axis arranged at right angles to one end portion of the post, a roller freely rotatable on said axis, said roller having a bevelled surface adapted to' be engaged by the workpiece and arranged substantially in alinement with the stitching mechanism of the machine at one side of the needle of the machine, stationary means on said post adjacent and partially enveloping said roller forming a support for the workpiece, the bevelled surface of said roller having teeth or projections, and said last named means having a surface substantially paralleling the bevelled surfaceof theroller.

i -5. A workpiece supporting attachment for stitchingmachines, said attachment comprising a post, an axis arranged at right angles to one end portion of the post, a roller freely rotatable on said axis, said roller having a bevelled surface'adapted to be engaged by the workpiece and arrangedsubstantially in alinement with the stitching mechanism of the machine/at one side of the .needle of the machine, means on said post adjacent said roller forming a support for the workpiece, the bevelled surface *of said roller having teeth or projections, said last named means having a surface substantially paralleling the bevelled surface of the roller, and said last named surface being formed. by elongated teeth arranged at right angles to' theaxis of said roller.

6. A workpiece support attachment for sewing machines comprising a plate, means adjustably supporting the plate beneath the needle of the machine, said platehaving-a horizontally flat portion, and-a downwardly inclined curved portion arranged beneath the needle of the machine, the lowerend of said inclined curved portion terminating in an inwardly turned lip, and the outer surface of said inclined portion being formed by longitudinally extending and transversely spaced ribs.

'7. A workpiece supporting attachment for stitching machines, said attachment comprising a mounting portion and a work engaging plate inclined downwardly with .respect thereto and arranged beneath the needle-of the machine,

means for adjustably supporting theattachment in the machine to position said plate with respect to the needleand presser foot of the machine,

the central portion of said plate being apertured, and a roller mounted for free rotation in the aperture of said plate, with the surface .of said roller exposed through the plate to engage the workpiece, in providing free movement of the workpiece over the plate in the. operation of stitching the same.

8. A workpiece supporting attachment for stitching machines, said attachment comprising amounting. portion and a work engaging plate inclined downwardly with respect thereto and arranged beneath. the needle of the machine,

means foradjustably supporting the attachment in the machine to positionsaid plate with respect to the needle and presser foot ofthe machine, the central portion of said plate being apertured, a roller mounted for free rotation in the aperture 'of' said plate, with the surface of said roller exposed through the plate to engage the work-f piece, in providing free movement of the workpiece over the-plate in theoperation o'f stitchingthe same, and said roller being conical in forn'f presenting a bevelled surface in alinement with the angular portion of said plate. 9. A workpiece supporting attachment for stitching machines; said attachment comprising a mounting portion and a work engaging plate inclined downwardly with respect thereto and arranged beneath the needle of the machine,

means for adjustably supporting the attachment V of the workpiece over the plate in the operation of stitching the same, said roller being conical in form presenting a bevelled surface in aline-' ment with the angular portion of said plate, part of said roller projecting above the mounting portion or said attachment, and the upper surface of saidplate having longitudinally extending teeth arranged at right angles to the axis of rotation of said roller.

10. The combination with the needle and presser'foot mechanism of a stitching machine, of a workpiece support, said support comprising a stationary plate having an attaching portion and a'downwardly inclined apertured work engaging'portion arranged beneath the needle of the machine, and'a freely rotatable substantially conical member arranged in, the aperture of said downwardly inclined portion in presenting in alinement with the surface of said portion a bevelled surface over which a workpiece is free to pass.

WALLACE E. KLINE.