US2332480A - Zigzag sewing machine attachment for stitching gloves and the like - Google Patents

Description

Ot. 19, 1943. P. ADRAGNA 2,332,480

ZIGZAG SEWING MACHINE ATTACHMENT FOR STITCHING GLOVES AND THE LIKE Filed Sep't. 18. 1940 2 Sheets-Sheet 1 06f. 19, 1943. ADRAGNA .2,332,480-

ZIGZAG SEWING MACHINE ATTACHMENT FOR STITCHING GLOVES AND THE LIKE Filed Sept. 18, 1940 2 Sheets-Sheet 2 zg 2, I 2

In] l 1 I IL" l' INVENTOR ATTORN EY Paienieaoci. 19,1943

l zIGzAG YSEWING .MACHINE LATTA Y Fons'rIToHING GLovEs ANDTHE mns ff PhilipQAdragna, `Nev;1 York,V N. YI U u Vlaicit),serialintestati -v fraclaims. y(rc1. iizfesj i Application September This invention relatestc newand .useful im#v provements in a zigzag sewing machine attach-V ment for stitching gloves andthe like. L

l More specifically the invention proposes a novel attachment-which may .be mounted on, aftwi'n i needle zigzag sewing machine so that. themachine is capable of 'sewing raisedljzigzag stitches".

By. raised zigzag stitches as used iin" this speci.- flcation, it is meant that the'fahria "leather or otherjsheet material which is sewed, has 1a lraised zigzag portion; with the-stitches; acrossfthebasev thereof to hold the raised .portionin formation. It isproposed that the attachment be associe 5 isa perspectiveview of ated with the usual rocker arm-which'is mounted f on theesde-of the head` portion Vofthe zigzag -1 sewing `machine and `'which oscillates the needle,v

har.` When the attachment is connectedv with this rocker arm it will` operate in synchronization with thenneedle barwhichds necessary iorj ther;`

The invention proposes to arrange thel attachf proper operation ofthe devicenment to Yinclude `a-linlnaigesysterri which iserk ranged -to vbe adjusted so that vthe'zigzag sewing machine maybe adjusted togsew zigzag raised,A

portions of Various sizes.i s

vStill further rthe invention contemplatestcharl s Fig.`2 is a fragmentary'elevational view ofthe base portion of Fig.' l looking.'k in"the1dire`ction'of the line 2 2 thereof; this viewbeing described as fragmentary forthe reasonl that' many-known f portions of the, standardy zigzag?- machine vhave been omitted therefrom.

eFig. 3 isk a `fragmentary horizontal sectional View taken-on the line"3`3 ofFg. l.

Figll isa-fragmentary Verticalsection'al View takenlonfv-the line 4-4 of Fig.'-1.

ternand associated parts comprising tachment;illustrated/per sep# i :Figa Gis a.fragmentary-V horizontal sectional y i view takenjon the linef-L-S'of Fig. 5 but-showing this lsection'.appliedltc thefrocker -armof the zig-v zagsewingmachinef acterizing the attachment by a pairfof downwardly extending ngersffor extending along the 4 sides of the twin needles of the zigzag sewing Ina- "1' chine, :te be cooperatives-with'an upwardly. exV` 1 tending.:-iin'ger mounted ,on a certain- -s1ide\.a r f ranged beneath the plate whichjeXtends across machine.y *It is proposed that these threengers coactwith eachothento raise an areafof-thefagbric, sheet leatheror other material which .isfb'e-.

ing sewed by the zigzag machine in a way yiso as to formthef raised .zigzag formation mentioned.`

the toothediabric engaging footof the sewing Still further-the invention proposes ithecon'- struction nf aan'V attachment as vmentionedwhich is. simple and' durablei and' which maybe manu,- l

facturedv and'jsold at areasonable cost;

For"furtherxcomprehension off'thev invention..

and of the objects vand advantages thereof,:`ref.

erence .will be had' to the following descrir'tionr and accompanyingldrawings, and tothe appendedclaims in which the various novel features Tof` the invention are `more particularly 'set .forth'."-

Intheaccompanyingidrawings,forming a materia-l part of thisdisclosure.: i

Figui is a sideelevationalviewA ofa.-zigzag sewing. machineequipped with an attachment yin accordance. with thisfmvention andi-having f certain ofthe parts 4in an abnormal jraisedposi--- tion forthesalieof.clarity.` ;V

Fig. 7; is.i a lf-ragr'nentaryhorizontal sectional i' ,View taken on the line 'l-T-of Fig.

Fig "8h is a .fragmentary elevationallview ot the 'bottomf portion ofv` thegpressure foot and r4 the l needle bar-.of the machine, with-portions of the y attachment applied..

l Fig. 9 is ,anelevational viet ...of the parts shown "Vin Fig. 8 looking-from the rightY hand side and havingcertain of theparts .in an abnormal raised. positionfor the sakeof clarity.

Fig. v10..is a fragmentary.enlarged-.horizontal sectionalrview taken on thelinenIB--IO of Fig. 9. f K .Fig.- 11 `is a fragmentaryperspective View v.of

lthe. pressure foot shown in Figs. 8 and 9..

Y Fig.]12`is`a plan View offthe plate which extends over `the toothed fabric engagingioot of the sew-A ing machine, and certain associated ;p,arts.

Fia 13`is a, fragmentary transverse Sectional".

View taken on the lineiI-WIB; offFig. 12.

Fig. ll 'is a fragmentary sectional View taie`r1fv on the une. ifi- I4 pf-Fig. 12,; v

Fig.' 15 is -a fragmentary elevational View of a piece` ofsheet material which hasheenvistitched i with the' raised zigzag stitches in accordance with this invention, l

Fig.v Vlifisfa fragmentaryrr`` vertical sectional View y,

takenon'the une wels or Fig. 15.

forv stitching gloves land thelike in accordance fatigas' thei-linkagesysthe at- The attachment for agzigzaghsewing machine y time is capable of oscillating slightly laterally. This zigzag sewing machine is provided with the usual rocker arm 22 which is oscillated in the usual way by the drive shaft of the sewing machine, these details being omitted from this specication since they form no part thereof and these constructions are quite general.

A link 24 is connected between the needle bar 2| and the rocker arm 22. Such similar links have been previously used in zagza'gmachines. However, this link diilers slightly from prior links in the fact that it is constructed of a pair of adjacent sections 24* and 24b which are adjustably connected together. Several screws 25 are mounted on one of these sections and pass through slots 26 formed in the other of the sections by which the link 24 may be adjusted to vary its that each linger is resiliently urged downwards.

Thus each nger is capable of moving upwards length. The end of the link 24 which is connected with the rocker arm 22 is connected with Vthis rocker arm in the customary fashion. More speciflcally,4 the link 24 is provided withl a tubular bushing 2.1 passing through the end of the link; A stud28 passes through the tubular bushing 21 and is formed with a dove-tail shaped head 29 slidably mounted inthe` usual groove 30 formed in the outer face of the rocker 22.

A nut 3| threadedly engages the stud 28 and is adapted to be turned tight so as to clamp the tubular bushing 21 xedly in position along the length of the rocker arm 22. This tubular bushing 21 is of a slightly greater width than the width of the link 24, see Fig. 6, so that itis possible to iixedly clamp the bushing as statedv while at the same time the link 24 is free to pivot. Withthis arrangement the nut 3| may be loosened and then the stud 28 'may be shifted upwards'or downwards upon the rocker arm 22 so as to vary the amplitude of oscillating of the link 24 and consequently of theneedle bar 2|.

A bracket 33 for supporting the two needles 34 of the twin needle zigzag sewing machine is mounted in the usual way upon the bottomof the needle bar 2|. This bracket varies slightly from the conventional bracket in the fact thatit is: arranged toslidably support a, pair of downwardly extending fingers 35. y 'I'hese'downwardly extending ngers extend along'the sides of the needles 34 zand are vertically slidably mounted upon the bracket 33 in a certain way. The downwardly extending ilngers 3 5 project from a cross head 35a which is formedwlth splits 36. The rods 31 pass through the splits 36 and extend upwards and vertically slidably engage in the bracket 33. A clamp screw 38 is mounted through the split 36 of each. downwardly extending ilnger 35 'and works across the.` split 36 by which the downwardly extending ngers may be clamped upon the rods 31. A rectangular stem 43 projects from the cross head 35* and slidably extends into a complementary opening formed in the bracket 33 to assist in retaining the cross head against turnlng. .A screw 43l inthe bracket 33 extends into a slot 43b in the stem 43 to permit the lingers 35 to remain in engagement with the goods being sewed after the needle bar 2| and needles` 34 begin their upward movement. When the screw machine.

and downwards relative to the bracket 33 under the resilient action of the spring The sewing machine is provided with the usual pressure foot 49 which is cooperative with the usual toothed fabric engaging foot not illustrated on the drawings but which operates to advance the fabric or other goods being sewed. This pressure foot has an opening between the sides .thereof through which the lingers 35, the needles 34 and a certain upwardly extending nger pass. The crosshead 35a is normally urged downward toward the top of the presser foot by the springs 39 and the lingers 35 extend through the presser foot to press and hold the goods when the needles are in engagement with the goods.

Thez'igzag sewing machine is provided with the usual plate 4| which is mounted across the base of the machine and has openings 42 through which the toothed fabric engaging foot passes. So far the plate 4| is conventional; however, it now departs from thev conventional design in the fact that it is formed with opening 44 located between the openings 442., A certain upwardly extending linger 45 projects from this opening 44 as will be hereinafter more fully explained and the needles `34 are also constructed to pass through the opening 44.

A slide46 is mounted transversely beneath the said plate 4|. This slide passes through a pair of spaced. bearing vblocks 41 which are mounted upon the bottom of the base portion of the sewing machine. The upwardly extending finger 45 is flxedly mounted on this slide 45. The opening 44 is wider than the width of ythe finger 45 so that the Aringer 45 may move laterallyin the opening 44 when the slide 46 moves correspondingly. A linkage system is provided which connects the slide 46 with the rocker arm 22 of the sewing Theilinkage'system mentioned in the previous paragraph is for lthe purpose of oscillating the slide 46 in synchronization with the needle bar v2 This linkage system includes a bar 49 formed of vtwo sectionsf49a and 491 which are adjustably connected with each other by screws 59 mounted on one of these sections and passing through' slots 5| vformed'in the other of these sections.

The bar 49 is pivotally connected with one end of the slide '46 by a pintle screw 52. That portion of the slide 46 between the bearing blocks 41 is reinforced or supported by a screw 53 which passes through a slot 54 formed in the slide. This screw 53 is threadedly engaged into the base ofthe sewing machine. Y

The bar 49 is pivotally connected with one end of a lever 55. intermediate oi its endsby a pintle 56, The other .end offthe lever 55 is connected `with a link 51. This link is provided with a pin 58 which engages a'slot 59 formed in the lever 55.

vThe link51 is pivotally connected by a pintle 60 43xi reaches thetop of the slot 43h, however, the

crosshead 35e-and fingers v35 movel upward with the needle bar and are lifted from thegoods to permit movement of the goods before the next down stroke `of the needles.v f Y A coaxial-spring 39 is mounted upon each rod is pivotally connected b'y a pintlev 64 with an 31 andgoperates between each downwardly exi tending finger and the bracket 33 in a manner so adjustable link 65. The adjustable link is formed from two sections, namely, section 65e and section 65h. One of these sections is provided with screws 66 which engage through slots This lever is pivotally mounted A lcates up and down.

assenso adjustable link ."65 hasl one gef: its `Vvends pivotally' mountedbon'the stu'dfl2`8 which asipreviouslyeX-'l `plained isfmounted upon Ithe'rocker-.arm 122 ::.The operation of the deviceris asfollowsz r The goods which is to be sewed with the raised zigzag vportions .is-placed upon the base of the 3d. Then the pressure foot 4G whichis grooved, in the usual manner of the foot of sewing machines for producing raised stitches, is lowered in the usual way so that the material is gripped.

When this is done a small area ofr the material will be projected upwards because of the fact that the upwardly extending finger 45 projects above y the top face of the plate 41, `see Fig. 14.. This n'- i ger i5 projects an area of the goods upwards over the upwardly. projected-material so that `the material is rmly held at the top as rwell as at the bottom. yThe machine is then operated in the usual way so that the needle barv 2l recipro- Y Simultaneously the rocker arm 22 functions to oscillate, the needle bar.

:35 During this time the springs 39l are u nder tension.

` sewing machine directly beneath the twin needles either overthep'late ll vorproject'fro'm under the said; 'i plate through any.. suitable i size and shape opening. a y hf 1;,

kWhilelhave `illustratedanddescribed the"preferredembodimentsfof `my inventio-ni itis to -be understood .tha-tI do 'not limit myself to the spreciseiconstructions .herein disclosed and the Yright is reserved to all changes and modifications coming withinv the scope of the invention as dened in the appended claims.

` claim as new, and desire to secure by United `States'Letters Patent isf i I y 1. `In a zigzag sewing machine having` a pressure foot engageable against a piece ofamaterial being sewn anda reciprocating and oscillating' between the ngers. lSprings f 39 resiliently- `urge thedownwardly projecting lingers downv Having thus described invention, what I needlebar carrying spaced needles and an oscillating linger extending upwards through ,an` opening in said pressure foot to bulge said ma?.

terial upwards in the space between said needles and synchronized to follow the oscillatingmovement of said'needles, a cross head slidably mounted on said needle bar and'urged toward the top face of said pressure foot', downwardly extendinglngers projecting from said cross head and projecting through the opening in said pres- 'sure foot to engage the material on either side .ofsaidroscillating finger to` hold the material V against' the sides of said oscillating iinger, and:V means for continually urging said cross head f toward saidpressure foot regardless'of the reciprocativemotionoffsaid needle bar. Y

2; In-a zigzag sewing machine having a presure ootengageable against a' piece of material y y being sewn and a reciprocating and oscillatingr As the needle bar 2Ioscillates, the finger-"45 will correspondinglyy oscillate so that the` ilnger needle bar carrying spaced needles and an'oscil- -latingnger extending upwards through lan F25. During this time the springs 39 are under so in that the needle bar 2l is oscillated by the rocker varm 2,2, and it is the rocker arm22 which.

oscillates the slide til through the linkage system previously described,v Since the nger. 45 is mounted on the slide @it it oscillates inthe same manner. 'The goods are sewn las illustrated in v Fig. 15. In this gure the goodslare generally indicated by reference numeral 'lilly Thearea 'ma y i thereof was projected upwards bythe fingerl 45 and held in this position by the top downwardly projecting ngers 3e. lThe needlesv 3.4 weresewing onthe points 'H and 'mon the twosidesof the upwardly projecting portion, and the shuttle of the machine is moving across the bottom of this portion `producing the raised zigzag portions.v

The amplitude-ofthe zigzag formation may be varied merelyhy` loosening the nut 3l and moving the vstud 28 yupwards and downwards along` the rocker arm 22.l When this adjustment is made,

opening in said pressure foot to-bulge said rnaterial upwards in the space between said needles .i

and synchronized to. follow the oscillating move- :ment of said needles; a cross head slidably mountedo'n said needle bar and urged towardthe top face of said pressure `foot, downwardly extending lingers projecting from said'cross head and projecting through the opening in said-pressure yfoot to engage the materiali-(insana side of said oscillating finger to hold: the material against the sides of said oscillating nger, and means for continually urging `saidfcross head toward said pressure foot regardless of the reciprocative motion of said `needle bar, said slidable mounting .of said cross headcomprising a bracket mounted on said needle ban-.and spaced rods having their bottom ends xedly attached to. said cross head and their' top ends slidably extended into complementary openings formed in said bracket, said A means, comprising `resilient members ont said it maybe necessary to properly adjust the linkage systemjsoas to maintain the position of the -upwardly projecting finger incbetween they fingers 3,5. YThis may be done'by loosening'the screws 25|, or the screws El., `or the screws 59, or

any combination of r,these screwsduring the ade justment period. Once `the adjustment hasbeen made, these screws must be tightened.

`A feature ofV the invention resides in the fact that since the amplitude. of oscillation of the needle bar 2l and the finger 65 'is controlled by the positiony of the stud 23 upon thev rocker arm rods urging said cross head downwards.

3. In azigzag sewing machine having a pressure foot engageable against apiece of materialbeing` sewnxand a reciprocating andl oscillating vneedleba'r carrying spaced needles and an oscila latine" finger ,extending upwards through an ment of said needles, a cross head slidaolymountf y' ed on said needlel bar and urged toward the topV 22, the amplitude of oscillation of the needle bar j 1 and the iinger 45 willa'lways be ythe same. This is necessary for the proper operation .ofjl the attachment.-

It is'to be understood that the linger 45 may opening in said pressure footto bulge said ma# terial upwards in the space betweenlsad needles and synchronized to follow the oscillating moveface o f said pressure foot, downwardly extending be .of any desired yshape/and it `maybe placed continually urging said cross head towardjsaid means, comprisingresiiient members on said rods urging said cross head downwards, said resilient members comprising expansion springs coaxialiy mounted on said rods and operating between the adjacent faces of said bracket and said cross head.

PHILIP ADRAGNA.

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