US1297920A - Feeding mechanism for sewing-machines. - Google Patents

Description

D. S. SEYMOUR.

FEEDFNG MECHANISM FOR SEWING MACHINES. APPLICATIONHLED MAR, 1-0, ms.

- Patented Mar. 18,1919.

' 4 SHEETS-SHEET I D. S, SEYMOUR. FEEDING MECHANISM FOR SEWH APPLICATION mm MAR) 10 m MACHINES.

Patented Mar. 18,1919.

4 SHEETS-SHEET 2.

l/glih woow j fr D. S. SEYMOUR. FEEDING MECHANISM FOR SEWING MACHINES.

APPHCATIONTILED MAR. 1-0. 1916- s Paras-r DUDLEY S. SEYMOUR, OF OAK PARK, ILIiINOIS, ASSIGNOB, T0 UN ION SEE-CIA]; REACIEHHE COMPANY, OF CHICAGO, ILLINOIS, A CORIPOEAZION 53F ILLFNOIfi FEEDING MECHANISIE FOR SEWING-MACHINES.

a cameo.

Specification of Letters Patent.

Elm-tented Mar. 18,

Application filed March 10, 1916. Serial No. 83,298.

To all whom 2'?) may concern:

Be it known that I, DUDLEY S. SEYMOUR, a citizen of the United States, residing at Oak lark, in the county of-Cook, State of Illinois, have invented certain new and use ful Improvements in'Feeding Mechanism for Sewing-Machines, of which the following is a description, reference being had to the accompanying drawing and to the fig feeding mechanism for a sewing machine of the above characterwhercin the feeding device may be positively operated from a main rotating shaft located in a horizontal arm from the outer end of which the work supporting arm is suspended.

A further olncct of the invention is to provide a feeding mechanism of the above 1 character with an auxiliary feeding device and with means located in the work support ing arm for giving a differential movement thereto.

These and other objects will in part he obvious and will in part be hereinafter more fully disclosed.

in the drawings, which show by way of illustration, one embodiment of the invention.

Figure l is a side view of a sewing ma- I chine embodying my invention and with parts broken away to show a portion of the Fig. 4 is a' horizontal sectional view through the upper part'of the work suportin arm showin the feedin mocha-- ni-sm therein, in plan; a Fig. 5 is a detail in vertical section showing the controlling mechanism for varying the movements of the auxiliary feed bar;

Fig. 6 is a sectional View on the line 66 of Fig. 5;

Fig. 7 is a view on the line 7 7 of Fig. 5; and

F ig. 8is a perspective VlOW' of the fulcrum pin for the feed bar; i

As illustrated in the drawings, the invention is applied to a sewing machine having a standard -1 with a supporting case '2, whereby vit may be secured to the table.

Mounted on the standard at the upper end thereof and projecting laterally therefrom IS an overhanging arm 8 in which is mounted a shaftl. -Projeeti'ng forwardly from thestandard 1 is an arm 5 which supports a horizontal arm 6.. The horizontal arm 6 is substantially parallel with the overhanging arm 3 and carries'at its opt-er end a depending post 7. At the lower end of the post 7 is the work supporting arm 8 which extends toward the overhanging arm and has its free end terminating underneath the free end of the overhanging arm. This work supporting arm is, therefore, arranged at an angle to the vertical plane containing the longitudinal center of the overhanging arm, that is, the plane of the overhanging arm.

Mounted in the horizontal arm 6 15 the main shaft 9, which extends through the arm 5. Said. main shaft is journaled in. the hearing 10 at one end thereof and in the bearings 11 and 12 adjacent the other end thereof. The shaft is driven by a belt wheel 13 which is located on the outer end-thereof. The shaft 9 intermediate its bearings 11 and i2 is formed with a crank 14 and pitman 15 cooperating therewith is connected to adepending arm 16 on the shaft 4 in the overhanging arm 3 and serves as a means for oscillating the same.

Mounted in the forward end of the Overhanging arm is a necdlehar 17 carrying needles 18. On the adjacent end of the shaft 4 is an arm 19 which is connected by a link 20 to a collar on the needle bar so that the oscillations of the'shaft- 4 will be imparted to the needle bar.

The material is held on the'work supporting arm 8 by 'a presscr foot 21 which is fixed to the lower end of a presser bar 22. Cooperating with the needle beneath the work support are loopers 23, which are secured to the looper carrier 24 mounted on the outer end of the looper supporting shaft 'Thisff 119 looper supporting shaft is in turn mounted :1 sh 7.1; is

. connccfiei i cater cm? of in eccentric l and. is (303N300 V n 30 projeciinw 31. SaiC i on; shai'i is p (mcl arm carrying ouieimu ii COiiill' i suppci-i' 2:; and arm 34- Th iini; 3:

i mpg-mfg a hall find 423 Whici'i hula. i iiimyiacni; i'ciatii'a to the impel" @UPPO ahai i; by fixed. colhi and r}. This has a lnwnwaz'iily (litiumliiifi .(m is imlimsan guide 4%. oacil i: wise 57mg eevs rih which This prevents .ifih i ha ziouva a i. v Qai sieeve imi'iai leng 'inuxiaw. 1i hub: 46' is (50n- Hi iii; iha sleeve :5 one (an? ami at other vial saiii liial-r is whmmtzai in ihe. hall Li 41 that ihc usciiiatimis of the cI'QSS wili impart an umiwisn nm'i'cmeni;

hmpvr aupporiia 'g filhli i i flfilllli mechanism as l 1h shmvn 5 iii a saiu 512ml (ing and an auxiliary fow 20 43 which are ai'i'aiwral in tau: qwii'iaai (lugs; an ar- Eli. 3

the, a: whim arm; i.

mam M'THHl in a fecal hair il). final has iivpuiiiling bracket arms whim! zii'c n (mid a sleeve 51 on the 10051-01- -*i1 ahaf Disposed "him the alvm'a 5i an, (ac/centric #32 which i'xml in said l The Hie ave 5 muiwise relative hat 'i'jhe i'iiiatmg moi/amen W111 XEHSP, anrl. ion-(5r iii} f and at its Year "(2. The ii'aa'i .0211. 49 iextsnila lei V cm was i yin 53. 'i hi pm'miis the ii-ml hav 0 he inm'uil omiwisc on (he fulcrum pin and also pfiliilliS the ,i'vvil hay in hi: i'aima'l at its i'oi'uanl (,iUl ihiruugh 'Lhi; actiuh 0f ths cccuuti'ic said pin waiving as a fulcrum at this time.

The cross shaft; 35) provi xi \s'iih a lll'lilfl arm 56 which has th slut 57 .ihrmul theiei A. stud adjualahly mounted in ihiaaloi. A link 59 comuartial ai one end to the siuil 5S ancl at its other 01ml to a shall 30 nioui'itvil 9n the (.IHl m? kin: main feed hai As the (T055 shaft, ()Lw'fifl latest the main i'cml hai' \vili lm mm'ed haul; and forth. its the lm'm-erwuypuriing shal 25 is oscillated, the c wnti'ic 52 will raia: and lower the feed dog, and these two active devices give iha required niovzaucncs to The ceu (legs. :ulj'lisiing the stud in the i? l ii-iot the throw of tha 'f'cml liar ami the I'Qsuliiiig feuding mn'vmnant of the food dog may he varied.

The auxiliary i'mwi (log 4-8 cairiial hy an i\IlI lli;li ii'siai bar 61. Thu main 'luizil haL' i slottmi longitudinaliy and i'hu auxiliary 'i'veil hat is lm-al'ml Therein A screw (33 massing liming-h a shit in the auxiliary foul 1 v (10;); holdsiha same on blli, auxiliary fowl iaaici feed hai's \vili he raised and lowered simultaneously by i211: mawnh-m 52. The auxiliary {vial bar is immal hack and fin-iii by a comiectien from the main lJM' which consists of the followin parts:

.L U-shaped lunar (33 is pivotally suppm'iiai in the work suppm'ting arm and feed bar and iocpzw supporting shaft pass between the arms 0; this lcvvi. The arm (3% of sai l U-Sha1aal luvmprojects '11) alongside 0i the auxiliary iuial bar anti is coniiCCliOfl i.) Sillii auxiliary bar by a hill 65. Said link is pivoted at (36 to the arm (3*; and. is pi'm ed at (3'? m the auxiliary feed bar. The SliiG oi the main bar is cut :u 'ay to permit this cnnneuiiun. The othur arm 38 of the Shaped lunar projects up along 'the ()Limpsicle of the auxiliary feed hat and is form-Mi with a curved slot 69. A link '70 pivoted at 'iita the main. feed bar and carries a roller 01- stm'i ?2 which engages the 4101; 69. W hen. the link is disposed as shown in. F 5, that is, with the roller 02' stud T2 at "the, apps cml of the slot 69, the auxiiiary feed i321 wili be moved basic and forth substantially in unissn ivith'izhe main fem bar. In othm' words, the roilur 01. stud 72 is substantially in aiineiuenl; with the pivotal CUHNQTi/lOH 3G .hutwcun the arm (i i. .Whau this link 70, llOiY'i-V'Cl, shi'f'i'ml tcwm'il the imvm' and of iiilfi sio' min ihu .i t'iiizuy feed hay Wiii he giveii a link and the menses greater throw than the main feed her for obvious reasons.

The link may be shifted by hand lever 73 which is pivoted at 74; to it suitable lug on the inner face of the work supporting arm and is connected by a link 75 to said linlr 70. At the outer end of the lever 73 there is a hand piece 76 which extends to the outer face of the work supporting arm so that the lever 1nay be readily adgusted and this hand piece may be formed with suitable devices for holding the lever in adjusted positions. 1

From the above description it will be apparent that l have provided a sewing machine having a. suspended work supporting arm with a feeding mechanism wherein the main feed do is positively actuated from a train of mec anism connected to the main shaft at a point directly over the work sup porting By this arrangement of parts the, train-of mechanism between the main shaft and the feed leer includes very few parts whiclnof course, increases the efi icieney of the feeding mechanis It is obvious that minor changes in-the details of construction end nrrengement of parts may be made, Without departing froin cated in said horizontal arm, a work supporting arm carried by said horizontal arm, a feeding device carried by said work supporting arm, means for positively actuating seid feeding device from the main shaft in the horizontal arm and driving-connections between the main shaft and the stitch form-' mg mechanism.

2. A sewing machine including in comloinetion stitch forming mechanism, a stand ard, an overhztngingarm carried thereby, a horizontal arm carried by the standard, a main shaft located in the horizontal arm, a work supporting arm carried by said horizontal arm and extending at an angle to the vertical plane of the overhanging arm, a feeding devicein said work sup porting arm, a feed bar carrying said feeding device, means operated from the end of the shaft adjacent-the work supporting arm for "positively moving said feed bar oaolr and forth, means operated from the end of the shaft adjacent the work supporting arin for positively raising and lowering the feed bar and driving connections between said main shaft and the-stitch forming mechanism.

3. A. sewing machine including in com hination a, standard, an overhanging arm auxiliary feeding device, menus; v

carried thereby, a horizontal arm carried by the standard, a mum. shalt located in the horizontal. arm, a work supporting arm carried by'said horizontal arm and extending said auxiliary feeding device is raised and 4 lowered with the main feed bar, and means operated by the main feed hm.- i'or moving said auxiliary .lced liar hack and forth.

4. A sewing machine inchiding in cornbinhtion a staiulerd, an everhanggnngr arm carried thereby, a'liorizontal arm carried by the standard, a main shaft located in the horizontal arm, a work supporting ar: carried by said horizontal arm and extemling at an angle to the vertical plane of the overhanging arm, a feeding device in said work supporting arm, a -teed har'carrying saidfeeding device, means operated from the end of the shaft adjacent the work supporting arm for positively moviug said feed l'lfil back and forth, means operated from: the end of the shaft adjacent the work supportiug arm for positively raising and lowering the feed her, an auxiliary feeding device, an auxiliary feed lllill. carrying said auxiliary feeding device, means whereby said auxiliary feeding device is raised and lowered with the main feed bar, a lever located in said work supporting arm, devices connecting the lever to the auxiliary feed her, and driving connections betweenthe main iced, bar and said auxiliary lever whereby the reciprocations of the main feed her oscillate said lever.

A sewing machine including in oombination, a standurd, an overhanging arm carried thereby, a horizontal arm carried by the standard, a main shaft located iu'tlie horizontal arm, a work supporting arin' carriedby said horizontal arm and extending .atan angle to the vertical plane of the overhanging arm, a. feeding device in said work sug'lportipg arrn, a feed bar carrying

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