US1612821A - Sewing machine - Google Patents

Description

^ G. HUBER SEWING MACHINE Jan. 4, 1927.

Filed Feb. 191 192e 4 Sheets-Sheet l i Jan. 4, 1927. 1,612,821

G. HUBER SEWING MACHINE Filed Feb. 19r 192e 4 sheets-snet z Jan. 4, 1921 y 1,612,821

G. HUBER SEWING MACHINE Filed Feb. 19, 1926 4 Sheets-Sheet 5,

Jan. 4, 1927. 1,612,821

G. HUBER SEWING MACHINE r Filed Feb. 19, 192e 4 sheets-sheet. 4

o S (VZ) 54 Igii Y l 41 :H-- 45 on fing. 25, i920, l lieve i` projecting edges of the two ire inzien GUSTV LLUBEB, 0F STUTTGART, GERMANY.

Application ln my application, Ser. No. 405,927, filed described :i sewing iinicliine for producing in oneoperetion tivo scams., to wit, o.' Seem for sewing tovgetlier or uniting two pieces oi foliiic and e seam for covering seid first seein, the letter seam being known es an over-seein. In the irnichine referred to, two closely positioned needles carried hy one needle her are provided i'or producing in cooperation with :i looper the regidor seein, while the ovvi-seam is produced hy o. third needle, also cooperating with e looper. To

rpermit the oveiseam needle to properly istitch through the edges of the united pieces ol fabric, the extreme end or' the movable gpert of the curved erm of the machine Yis sliziped to act as 2i spree-der for spreading the nited pieces of fabric, while between y,the need-les jfor uniting the two pieces oi" laliric and the oversearn needle is provided e trimming device for trimming io the pieces of fabric prior to being covered by the over-seem.

The object of my present invention is to simplify the construction and. operation of tlic machine referred to, end to still, further increase the elasticity of the finished seem. To this end, there is provided for the production o-tlie regular seein @nl one needle, 'instead of `the .two closely positioned needles used in my earlier machine, end this one needle as Well as the overseem needle are erich carried by e. separate needle bar, the two needle 1oars being arranged one loehind the other. :ind heing operated each hy e siepi-irate shaft, whichshats are rotated at tl@ ratio of 2:1 so that the needle for melting the regular seam produces two stitches, while the overseein needle 'makes only one stitch. l/Vitli eech needle cooperrites ai, looper, there being also provided a hook to cooperate with the overseem needle,

dl twice as fast as the shaft operating the overend the two needles are so closely positione relative to each other that it is possible to sew in very short curves which iso' considerable importance in the sewing on of sleeves. Frein the 'drive-shaft for operating the needle producing the regular seam there is also derived the operation or" ellthe other mechanisms cooperating with said needle, such as the looper, the feed-device and the presser-foot, while the drive-shaft for the overseem needle vis also'y used or lil/ed February 19, 19223, Serial No. 89,279, and in Germany December, 1925.

operating all the other elements cooperating with the overseem needle.

rihe vorioiis novel features of my present invention will he hotter understood from the ll "rd'l.ld"` Y'l fio owing con ef escription iiiti ie er ence to the appended drawing illustrating my improved sewing machine, and iii which 1 is a front elevation of my machine, top plan View of the saine, Fig. 3

drawn to e larger scale, show- Fig. Fig. 2 is a e detail view,

ing the operation of the vlooper cooperating with the needle producing' the regular seem, Fig. 4 a side view of Fig. 3, Fig. 5 e front elevation of the looper and hook cooperating with the over-seam needle, Fig. 6 a plan view of Fig. 5, Fig. 7 a. front Ielevam tion of the two presser feet cooperating with the overs/earn needle', Fig. 8 e pien View of the seme, Fig. 9 e. top pien View o'the feed. mechanism for the overseam needle, Fig. l() a partial side-view thereof, Fig. 11 'an end-view of the feed mechanism and Fi n.12 e perspective view of the same end oiga the spreader. v

The general construction 'end operation of my overseam sewing machine having been fully described in m 'seid application, Ser. No. 405,927, l shall escrihe oi the construction and operation of the present improved machine only those parte constituting the new features.

The two needles, that is to say, for producing the reguler seam for uniting two pieces of fabric and the needle for roducing the 'overseein together with all t cooperating elements, to Witzpresser-leet, feed-mechanisms and loopers, are operated 2y two separate cam-shafts desi ated in igs. 1 und 2, es 1 and 2 respective y. These two cam-shafts are so geared together that they are rotated nt the ratio of 2:1, that is, the shaft operating the ordinary sewing needleand lits (.oopereting parts-is rotated seein needle and itsy cooperating parts. Because of this ratio, the ordinary sewing needle will make double the amount of stitches as that made by the overseem needle, :ind accordingly, the feed-mechanism and the trimming mechanism operated by shaft 2 will Ineke twice as vmany movements ,es the feed-mechanism o erated by shaft '1. This arrangement ena. les` in the simplest manner the small elasticity of the ordinary the needle lill 10 v Said pointed member il .two pieces of fabric tai scam. to be separated immediately at the lc't. ot the teed-mechanism (not shown) coo (si-ating with the ordinary sewing needle. '1 V'lo this end, the presser-toot 56 must with 5 its'lett plate extend above the loosely mounted iiointed member 5t). vAnd as the feed .me htuism during its feeding movement proliwts. with'its teeth above the stitching plate ythus lifting the work-pieceto be Sewed, the 50 also must share in this upward movement. `Without this pointed member -50 the sewing of very l thin pieces of goods would be impossible cept through manipulation bythe operator'. ln Fig. l2, 57 designates the stitching -Jilate, 58 the lower trimming knife, whereas at 21a and 2lb are Shown the pressert'eet .'-eooperating with the overseam needle. u

' The pieces ot iabrie to be sewed move in 29 the direction of the arrow shown in Fig. 12

"and pass under the presser-foot 5G, then over the trimming knife 55% and' over the spreader 4-7 to be gripped by the feeder till. v 'i At 59 is Shown the stitching hole for the A25 ,sewing needle and at GO the stitching hole tor the overseam needle.

' l1vlilhile il have thus fully described the fnovel teaturee of my improved machine, I 'do not, of course, limit myself to the con 30 AStraction Aas Shown, but claim as my inven- .ti()n,`: l. ln a sewing machine, the combination f with two simultaneouslyr operating needles, viz, a sewing needle :tor Sewing together and an overseamneedle -t'or producing an overseam covering the first eeaxn,y of two rotatable sha-tts, one operating Vj 'said eewingneedle and the other operating "said overseam needle, the ratio of rotation 4"? of said two shafts being 2:1.

2. ln a sewing maehiiieathe combination with two simultaneously operating needles.'

viz, a needle for eewing together two pieces of fabric and an overseam needle tor producing 15" an overseam to cover the first seam and a Y trimming device interposed between Said two needles, .of two rotatable shafts being so geared together as to rotate at the ratio of 2:1', the shaft rotating at the higher speed. 59 operatingy said sewing needle and trimming device, and the shaft rotating at the lower ypeed operating said ovcrseaxn needle and apaocated mechanisms.

il. rl`he combination as specitied inelaim l, .cooperating with Said sewing needle. and means operativel con 'nef-ted with the corresponding shat and being diaposed above thesame for actuating `eaid looper iu proper timed relation to Said il sewing needle.

4. ln a eewi with two simultaneously operatingr needles. viz. a Sewing needle for sewing together 05 com )riSinff a loo er y two pieces of fabric and au overseam 55 needle for producing an overseani covering lraid presser-feet so as to periodically open 'er shaft 'for actuating' said feed mechanism ng machine. the combination -uism for moving said feed-mechanism to the first seam, or two rotatable sbatte rota ting at the ratio of 2:1, the Shatt'roteting at the'higher speed operating said sewing needle, a looper and ahook ada ted to cooperate with said overseam nee le, and an actuating means operated by the Shaft ro. tating at the lower speed for simultaneously l actuating Said looper and hook, the said con- .jtruction permitting a close arrangement of said two needles. l

5. 1n a se 'ngmachine, the combination with two simnltaneously operating needles, viz, a Sewing' needle for sewing together two pieces of fabric and an overs-,earn needle for producing an overseam coveringthe tiret seam, and a needle bar carrying saidoverseam needle, ot two rotatable Shafts rotating at the ratio of 2:1, the faster Shaftoperating said lowing needle and the slower shaft operating .f1-aid' overecano-needley by means ot said needle-bar, two opposed pres- ::e,rl'eet adapted to cooperate with Said oversaeam-needle and a means operatively connected with said needle-bar for actuating Bti the. saine during the feed of the pieces of fabric.

(i. In a sewing machine, the combination with two simultaneously operating needles, viz, a sewing needle for sewing together two pieces ot' fabric, and an overseam needle -for producing an overseam covering the first seam. of two rotatable shafts rotating at the ratio of 2': 1, the faster shaft operating Said sewing needle and the slower shaft ,im operating said overseam needle, a feed-mechanism adapted to cooperate with said over;` roam needle; articulated connecting meane1 between said feed-mechanism and said Slowto feed the goods to be stitched and periodically movingsaid teed mechanism into and out of operative position. v

7. The combination as specitied in claim 6, in which said actuating means for the feed-mechanism comprise a means for vary ing the length of feed of the feed-I viechanism. The arrangement being such that the feedmechanism always starts at the same point.

8. lIn a sewing machine, the combination with two simultaneously `operating needles, riz, a sewing1 needle for sewing together two pieces 'of fabric and an over-seam needle for producing an overseamcovering the first seam, of two rotatable shafts rotating at the ratio ot 2:1 the faster shaft operating said sewing needle, and the slower shaft operating said overseam needle, a curved arm, a feedmechanis'm rovided at the tree end of said arm and adapted -to cooperate with said overseam needle, an ntric on said slower shaft. pivote-d conn ting links between said eccentric and said feed-mecha- Elli and fro to feed the goods to be stitehed, m6

BLW @ont sie on seid slower. Shaft, and

links between. said see- .d seid feeduneelienism for 'fing the Seme laterally into ril-tive position. mia-.tion ns specified in olnirn li the seid pivoted connecting links is im .fnrying both the to and well :is the interni movement off-seid einem, said. Ineens comprising tied :trennte members permitting variene oi" the pivotal connections.

ld ln n fing nmchine, the Combination with .tivo s Anulteneonsly stizt/.jhing needles, needle ioi' sewingtogether two pieces oi febril' und e, needle for producing nn oi'eiseen'i covering the ifsteeein, of two i-otitebie sbatte rotating' :it diierent speedsa the fzistei slieft operating v:seid sewing fl' und the slower shaft operating seid in needle, :i curved erin, a feed-mech- :iniein provided in seid Curved erin and f i to cooperate with seid oversenan, y, 'ienne for netneting seid {eed-meel and n. nioveole spreading member in advance ot' seid feed-mechanism :ine edzfiyted to sp' :id the goods to be sewed so to enable them to pose above and below Seid arm.

ll. lfhe combination as specified in claim tro l0., in which seid spreading member is `f-fedf' *hoped end provided with en inner Y mining n shoulder adopted to be enby seid feed-meehanisni, the seid ding .member thus' being moved laterw` n s ther with seid :toed-mechanism. lil. in n` sewing machine, the combination with two sininltznieonsly stitching needles, viz, e sewing neeiflle for sewing together two niet e oi iebii: and en overseam needle for ni'odneing; en overseznn covering the first seein, ot' two rivitntable shafts rotating at dill 'ent speeds, the fester shaft operating seid sewing nee/fille and the slower shaft 0prrseein needle, n curved arm, iein--ioeolienism provided in said curved sind adopted to cooperate with said i cdie, Ineens loiv actuating' said new e movable ledge adapted te with seid feed-mechanism 'for the 4goods to be stitched, sind n nien'ibei loeeted in ndvenee of "melninisin for spreading the be stitched so as to enable them iove and below said Curved arm,

said spreading men-1bn? vllflilllgf laterally together with seid feedfmeehensm.

13. ln e sewing machine, the Qombllation with two simultaneously operating needles, viz, a sewing needle for sewing together two pieces 'of .fabric and en overseam needle for producing an overseam covering the first seam, ot two rotatable shafts driven at diffei-ent speeds, the faster shaft operating seid sewing-needle und the slower shaft operating said overseem needle, a. presserfoot cooperating with said sewing needle, a curved erin, a feedmeohanisrn in said curved erin adapted to cooperate with said .overseain needle, and e pointed member and the slower shaft operating Stil-.d QVQI- seem needle, presser-feet adapted t9 @09perete with said sewing needle and sind 'overso 'faster shaft operating Seid sewing needle seem needle, and n trimming mefhenisni.

located between said sewing needle end seid overseam needle `for trimming olf the projet-ting edges of the sezved together pieces of fabric. 'i

15. In a, sewing machine, the combination with two simultaneously operating needles, viz, a sewing needle for sewing together two'pieees ot' fabric along their edges und en oversemn needle for producing an overseain covering the first seam, of two rotatable shafts gearedvtogether so as to rotate at different speeds, the fester shaft `operating seid sewing needle and the slower shaft operating said overseen: needle, loopeis cooperating with said two needles, e feed mechanism having e, to end fr0 and' n lateiel movement cooperating with said overseam needle, and a. trimmingI mechanism provided between said sewing needle and seid overseen) needle for trimmingo the projecting edges ot' the sewed together pieces of' fabric prim-.to the production ot' the overseam. v

.l n testimony whereof I n'iix inv signature.

GUSTAV HUBER.

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