US2363713A - Combined seaming and trimming machine - Google Patents

Description

7 1944- c. H. "WEISSENBER'G 3 3 COMBINED SEKMING AND TRIMMING MACHINE ori inal Filed 'May 27, 1938 s Sheets-Sheet 1 Nov. 28, 1 44. c. H. WEISSENBERG COMBINED SEAMING TRIMMING -HACHINE Original Filed llay' 27, 193B 3 Sheets-Shut 2 INIV'ENTOR a; .WMJW y,

ATT NEY Nov. 28', 1944. c. H. WEISSENBERG 2,363,713

COMBINED SEAMING AND TRIMMING MACHINE Original Filed May 2'7, 1938' 3 Sheets-Sheet 5 INVENTOR 41/54. J

.AT:I%RNEY tion of an edge-foldedtopstitched seam.

Patented Nov.;28 1944 commie SEAMING ANDTRIMMINGQ i MAC HI NE w t V Curt HLWeissenberg; St. Albans, N. Y.,assignor;

by mesne assignments, toLewis Invisible Stitch Machine Company,- New v ration of Maine York, N. Y., a corpot Y f Continuation offlapplication serial b; 210,318, a

l May27,]1938. Thisapplication' May 24,1940,

SerialNo; 337,062

lool ims. (01. 1124123) Q a This application is acontinuationeof my prior 3 application Serial'No.2l0, 3l8;fi1edlvIay 27, 1938. The invention relates to a pin'king attachment for use with sewing machines and an objectthere of is to'providea, pinking attachment which will moresuitably pink materialssimultaneously with the sewing thereofand especially for the pro duc- Another lobj ect of this invention is to provide pinking attachment; having a movable cutter which is pivotally sustained below the base of the sewing machine and whichis actuated ina manner as to leave the upper surfaceof the sewing machine base clear for Operating purposes.

Another Object of this invention-is to providea is a fragmentary top plan view of a ortion of the sewing machine having the pinking pinking attachmentof the character described, which is driven by mechanism designed for actuating the movable cutting element at predeter: i mined intervals in timed relation with the needle.

Another object of this invention is to provide a pinking attachment having a male cutter carrier rearwardly of both the hook-driving shaft and the needle, the carrier being pivotally sustained at one end of alever positionedlongitudinally below the base of the sewing machine.

Another object of this invention is to provide a pinking attachment having a female cutter supported in theheadfil3fl-and carries apresserg mounted level with the cloth'plate of the sewing machine and having an actuating leverfonthe 1 male cutter mounted wholly below the base plate of the sewing machine and comprisinga male cutter carrier rearwardly-of both the hook-driving shaft and the needle, the cutter carrier] having its lower end pivotallysustainediat one end of the lever, and the baseeplatenhaving an opening to permit the male cutter carrier and male cutter to pass upwardly abovethe base plate with the male cutter in cutting engagement with the feymale cutter, i

The aboveand other objects of the invention will be apparent from the detailed description of the combination andar rangemeht of parts shown in the accompanying drawings: wherein likenumerals of reference designate corresponding parts through the several tviev vs and in which: it

Figure l is a front; elevation, with parts broken mechanism applied thereto.

\Fi'g. 7 is an end viewerthe parts shown in In the illustrated embodiment of the invention,

the numeral l0 indicates asewing machine comprising a base-plate H, and an overhanging arm I2 having a head l3f at its free end. A main ac matin shaft H mounted in the arm 12 through suitable connections imparts vertical reciprocat tory movements to theneedle-bar i5 whereby the needle I6 is reei rocatedonce for every rotation s s i of the main shaft I 4*. i i 1 i Secured to the base -plate H so as to lie flushwith the top thereof is ac'loth plate vl'thaving a needle opening and feed tslots fora feeddog I8, the needle being timed to cooperatewith ahook or loop-taker 1-95101" the purpose of forming stitches, the hook or loop-taker being drivenb'y' aehaft l9'. -A'presser-foot bar is yieldably feetzlt-" v i i The-numeral indicates mypihkin'g attachment as a whole, comprising abase 26 having a depending post 21 which isslotted" at itslower end to receive a lever' 29. The lever is pivotally' mounted on a bearing pin 30 in the post 21. The

lease-plate H has an aperture!!! topermit passage therethroughfor the post. i

" l The front end of the lever 29 is bifurcated to form two arms 32, 32", for a cutter carrier 33 which is pivotally mountedon a bearing pin 34 extending through said arms.

A male cutting member] 35 gular prismatic form is factened to the cutter carrier 33by mean'soi a bolt 36. Afemale cutting member 31 is ias'tened to thelower surface of v the base M5 and has therein a .V-shaped opening 38, and is provided with upwardly extending guide members 39,.39" forming continuations of and having the same inclinationas the sides of the V-shaped opening 38.;"Ehe guide members 39, 39

i to be constantly n engagement with the rear; portions of the cutting walls of the male cutting away, of a sewingtmachine havingmy pinkingat-t 1 tachment applied thereto;

Fig. ,2 is aplan Viewof the pinking tattach t i t Fig.3 is aside yiewotthepinking attachment ment and associated parts;

showninFigt2. e i

Fig, 4 is an endview of the structure Fig.2. t t v P .Fig. 5 is a plan viewsoi pieces of fabric united bytant edge-folded and ton -stitched seam made i wi hih pi kin mech n sm or m inv n i t f are spaced awayirom thelapex oi the opening 38 andextend upwardly a distanceisufiicient so as member 35, under all operating conditions, and: serve to maintain the male and female cutting membersin alinementt v i i A ribbon-likeleairspring 4|; isfastened to the s lever 2Q by meansofi-a screw 42 and extends angularly against the malecutter carrier 33 and serves to biasvthelmale cutter outwardly about the pin 34 into engagement with the female cutting mem:

Thepressure exerted by the leaf-spring against of generally trianchine I6 and is rigidly attached thereto by means of bolts 43 passing through elongate apertures 44 in the base 26. It will be notecl that the cloth plate I! of the sewing machine I is cut awayat one side to permit the female cutter which is disposed rearwardly of the needle to come close to the stitch line of the needle and that the front vend of the female cutter lies flush with said cloth plate. It will be noted that by partially unscrewing" the bolts 43, it is possible to slide the pinking and to the pinking mechanism through a suitable folder indicated as a wholeby the reference 65, shown in Figures 6 and '7. p

The folder 65 includes an attaching plate 66 which is adjustably secured to the base plate H by means of a screw 61. 68 and an outside folding plate 69 are secured to the plate 66 such as by soldering to. an upwardly attachment longitudinally and thus vary the distance between the stitch line formed by the needle [6 and the ornamented edge of the fabric formed by the pinking or cutting members 35 and 31. As shown in Figure 2, the pinking or cutting members 35 and 3! are always disposed so as to cut-in a plane transverse to the line of feed or stitch line formed by the needle l6.

-The lever 29 at its rear end carries a pin 45' which is ball-jointedat 45 to a link 50 through a divided ball housing 50 The upper end of the link5|l is mounted on a bearing pin 5| at one end of a transverse shaft 55, The actuating mechanism which causes the lever 29 of my pinking attachment 25 to swing about the bearing pin 30 comprises-the shaft M, a worm 53 fixed thereon and a worm gear 54, carried by the transverse shaft 55.. I

. The transverse shaft 55 is geared to rotate at a lower number of revolutions than the shaft I4. The shaft .55 has an eccentric portion forming the bearing pin 5| on which the upper end of the link 55 is mounted. "It will thus be noted that the link 56 being in engagement with the pivotally mounted lever 29 will, cause thelever to swing up and downiabout the bearing pin 30, solely due to the motionof the main shaft I4, and during operation, the cutting mechanism will come into pinking engagement a lesser number of times than the number of stitches formed by the needle l6.

It is to be noted that the link 55 has a left male cutting member and shields the fabric section 62 from being dragged under the male hand thread at its upper end and a right hand thread at its lower end. The oppositely directed threads make it possible, by rotating the member 50, to lengthen or shorten the distance between the centers of the bearing pin 5| and the ball junction 45, and thereby provide for raising and lowering the male cutting member 35 and adjusting it after being ground for wear. U As shown. in Figures 2 to 4, inclusive, I have provided a stripper plate 56 which is mounted in slightly spacedrelation above the female cutting member -3'|and has an inclined wall 51 in alinement with the front side of the V-shaped opening 38. The stripper plate 56 is fastened to the base plate ll'and serves to strip the fabric 4 workedupon-from the cutting member 35.

The inclined wall 51 has a substantial height. When'making an edge-folded and topstitched seam, one fabric section rides on the wall 5! to a suflicient height so as topass easily over the top'of the cutting member 35.

Figure 5 shows an edge-folded and topstitched seam 69 comprising two sections of fabric 6| and 62 seamed together with a single row of topstitching 63 and having a pinked edge 64. The top section of fabric 62 has its edge folded and the twosections 6| and 62 are fed to the needle so as to cause the male cutting member to cut on' bent extension 14. H The plate 68 is bent downwardly and inwardly and forms a rolled edge 10 about which the upper fabric section 62 folds.

Extending substantially parallel to the rolled edge 10 of the inside folding plate 68 is a fabric separatingiplate H which forms part of the outside folding plate 69. I

The folding plates 68 and 69 converge as they approach the needle l6. The end 12 of the plate 68 extendsvunder the presser-foot, 2| which is undercut at 13 (Figures 1, 6 and 7) to permitthe end 12 to come close to the needle.

As the two sections of fabric leave the rearof the folder they pass between the presser-foot 2| and the cloth plate I! to be stitched together and pinked, the section 62 sliding over the top surface of a cover plate 15 mounted above the base plate I The cover plate extends above the cutting member and damaged.

The needle |6 passes through the double thickness of the section 62 and through the single thickness .of the section 6|, stitching the two sections together and the folded edges of the stitched sections pass between the cutting members 35 and 31 and produce the pinked, edge-folded and topstitched seam shown in Figure 5 in a singleoperation.

. It is to be noted that while tional purposes.

In the arrangement herewith shown; the male cutting member '35 is designed to cut on the downward stroke. suitably position the female cutting member 31 the upward stroke.

. While I have shown'and described a preferred embodiment of my seaming and pinking attachment, it will be understood that changes in the specific details of construction may be made within the scope of the following claims without departing from the spirit of my invention.

What I claim is: p

1. In a combined seaming and pinking machine, driving mechanism, a Work supporting base, male and female pinking cutters, one of which is substantially vertically reciprocable, a

carrier for the reciprocable cutter, a lever at one" end of which the cutter carrier is pivotally sustained for substantially vertical reciprocatory movement, said lever being fulcrumed intermediate its ends to a support positioned below the work supporting base and means actuated by the sewing machine driving mechanism for actuating the lever to reciprocate the cutter.

2. In a combined seaming and trimming ma chine, driving means,a work supporting base, a

An inside folding plate I have shown the cutting members as positioned considerably to the p I may however reverse and p 4. In a combined seaming vertically reciprocatory needle, a hook driving shaft, a pinking attachment comprising male and femalepinking cutters, one of which is substan tially vertically reciprocable, a pivoted lever below i said base, a cutter 'carrier for themalecutter pivotally sustained at one end of said lever rearother end of said lever in timed relation to the needle reciprocations.

chine, driving means, a work supportingbase, a vertically reciprocatory needle; a hook driving xshaft, a cutter carrier, a pinking attachment base "attached to said sewing machine base and having a pivotal support extending downwardly, a lever,

wardly of said needle, and means actuated by the sewin machine driving means for actuating the ,10 3. In a combined seaming and trimming mapendicularly to said base, a pinking attachment having a base disposed atone side of the needle, a female cutting'member fastened to the pinking attachment base, a hook-driving shaft mounted mounted in said pivotal support below said base,

said cutter carrier being pivotally sustained at oneend of said lever rearwardly of saidneedle,

and means actuated by the sewing machine driving means for actuating the other,end of said .lever in timed relation to the needlereciprocations. a

chine, driving means, a work supporting base, a vertically reciprocatory needlega pinking attachand trimming mament having a base attached to the base plate of the sewing machine and disposed at one side 1 of the needle and having a female cutting mem- 1 her fastened to the base of the pinkin attachment, ahook-driving shaft mounted below said base, a male cutter carrier positioned rearwardly of said hook drivingshaft, a lever and a pivotal supportfor said lever positioned below saidbase,

said male cutter carrier being pivotally sustained at one end of said lever rearwardly of said needle,

and means actuated bythe sewing machine drivingmeans for imparting cutting movements to said male cutter in timed relation to the needle reciprocations.

5. Ina combined seaming and trimmingma- 1 and means actuated by the sewing machine driving means for imparting cutting movements to chine, driving means, a work supporting base, a

vertically reciprocatory needle, a hook driving shaft, a pinking attachment having a base attached to the base plateof the sewing machine and disposed at one side of the needle and having a female cutting member fastened to the base of the pinking attachment, a hook driving shaft mounted below said work supporting base, a male cutter carrier offset rearwardly of the hook-driving shaft, a lever pivotally supported below said ingattachment base having openings to permit said cutter carrier to pass upwardly abovesaid female cutting member, spring means biasingsaid cutter carrier for yieldingly forcing said male cutting member into cutting engagement with said female cutting member, and means actuated by the sewing machine driving means for imparting cutting movements to, said male cutter in timed relation to the needle reciprocations.

7. In a combined seaming and pinking machine, driving means, awork supporting base, a

cloth plate, a stitching needle reciprocable perbelow ssaid work supporting base, a lever pivotally supported below said hookdriving shaft,

a male cutter carrier having its lower end pivotally sustained at one end of said lever rearwardly of said needle, said cutter carrier having a cutter supported at its upper end, said base plate and pinking attachment base having openings to permit said male cutting member to pass upwardly above said female cutting member,

springmeans for yieldingly biasing said male cut ting member into cutting engagement with said female cutting member, means in spaced relation ab ve said female cutting memberfor stripping the pinked fabric from said male cutting member,

said male cutter.

8. In a combined seaming and pinking machine, driving means, a work supporting base, a

head having a needle and a main shaft, maleand female pinking, cutters, one of which is substantially vertically reciprocable and positioned rearwardlyof said needle, a carrier for the reciprocable cutter, a lever at one end of which the cutter carrier is pivotally sustained for substantially vertical reciprocatory movement,said lever being fulcrumed intermediate its ends to a support positioned below the work supporting base and means actuated by the sewing machine driving mechanism, for actuating the lever to reciprocate the cutter, said, means comprising an adwork supporting base, said male cutter carrier having its lower end pivotally sustained at one end of said lever rearwardly of said needle, a 1

spring for biasing said male cutting member into engagement with said female cutting member,

chine, driving mechanism,- a work supporting and means actuated by the sewing machine driving means for imparting cutting movements to ing a female cutting member fastened to the pinking attachment base, a hook-driving shaft mounted below said work supporting base, a male,

cutter carrier positioned in rearwardly offset relation to said hook-driving shaft, a leverpivotjustable upright link, one end of which is balljointed to one end of the lever and the otherend of which is operatively connected to said main shaft. i

9, In a combined seamingand pinking mabase, a female cutter, a substantially vertically reciprocal male cutter, arranged to effect a cut, I on the downward stroke, a carrier for the male cutter extending below the worksupporting base, i

a lever at one end of which the cutter carrier is pivotally sustained, said lever being pivoted to a ally supported below said work supporting base,

said male cutter carrierlhavingl its lower end pivotally sustained at one end of said lever rearwardly of said needle, said base plate and pinksupport below the base, and means actuated by the sewing machine driving mechanism for actuating the leverto reciprocate the cutter,

10. In a combined seaming and pinking machine, driving mechanism, a work supporting base, a female cutter, a V-shaped male cutter arranged to coact with thefemalecutter to effect a, cut on the downward stroke, a pivoted lever below the work supporting base, a cutter carrier for the male cutter pivotally sustained at one end of said lever and arrangedto project the male cutter through the female cutter, and means actuated by the driving mechanism for thelever to reciprocate the cutter.

coar H. wn ssnnenac. 1

actuating

Images