US1009408A - Sewing-machine. - Google Patents

Description

C. H. T. HAGELSTEIN.

SEWING MACHINE.

APPLIUATION FILED MA11.6.1911.

4 SHEETS'-SEEET1.

Patented' Nov. 21, 1911.

C. H. T. HAGELSTEIN.

SEWING MACHINE.

APPLICATION FILED MAILH, 1911.

Patented Nov. 21, 1911 4 SHEETS-SHEET 2,

./Wi 9, 1 J ml Mal a.,

C. H. T. HAGELSTEIN.

SEWING MACHINE.

APPMGATIQN FILED 1111111111911,

1,009,408, Patented 11011.21, 1911.

4 SHEETS-SHEET 3 C. H. T. HAGELSTBIN.

SEWING MACHINE.

APPLIGATION HLSD MAB.6,1911.

Patentd NOV. 2l, 1911.

4 SHEETS-SHEET 4.

.and resident of Dorchester, county of rocated longitudinally to enter and be With- N 'UNITED srArEs PrENr OFFICE.

CHRISTIAN H. T. HAGELSTEIN;

OF DORCHESTEE. MASSACHUSETTS, ASSIGNOR T0 THE u REEE BUTTON HOLE MAGHNE COMPANY, 0F BOSTON, MASSACHUSETTS, A CORPO- `BATION OF MAINE.

SEWING-MACHINE.

Patented Nov. 21, 1911. Serial No. 612,670.-

[ol all whom it may concern:

Be it known that I, CHRISTIAN H. T. Ilaonns'rnix, a citizen of the United States,

Suffolk, State of Massachusetts. have invented an Improvement in Sewing-Machines, of which the following description, in* connection with the accompanying drawing` a specification, like characters on the drawing representing like parts.

This invention relates to sewin machines of the type wherein the work is ent int-ermittingly for penetration by the e e-pointed needle of the stitch-forming mechanism t0 produce a blind stitch, machines of this character being extensively used for nishing buttonhole pieces for boots and shoes. In such machines the needle is not only recipdrawn from the bend formed in the Work but said needle is also vibrated laterally on alternate thrusts to eli'cct the formation of the desired stitching.

My presenty invention has for its object tho production of an im roved sewing machine of the type referre to, so constructed and arranged thatthe machine can be run at. high speed without any disarrangement Vot: the cycle of operations performed by the several eo-n'iponent mechanisms, and Without interfering with the certainty and accuracy oi' the operations and to this end l have provid-ed for a very easy and smooth motion of the diit'erent parts of the machine, and i have reduced to a minimum the objectionable vibrations 'which the momentum of rapidly movingl parts tends to set up.

The, lwnder-onrrier is rapidty reciprocatt-d when the machine is inoperntion, and inisinuch as it is at rest more than one-half et' `cach complete cycie of the machine it is necessary to more the bender-carrier at a high speed during the rel'nainder of the cycle. and :is such speed tends of itself to produce improper vibrations I hafe devised actuating mechanism to counteract or' substinitially prevent such vibrations. This actuating ineeluinisni is so constructed that the niaximu-rn act ion exerted thereby upon the henderoeeurs when thel latter is in engagement with theI work. which is the proper time for the `amiliesrtion of the greatest torce, the `force, increasing!l astlre sneedofy is a top the `ben-der on its active strokedecreases,

and conversely, as the force diminishes on the return stroke the speed is increased.

I have also provided novel means for controlling the feed-motion directly and posi tively from the bender-operating mechanism, so that the feed-block rises as the bender is retracted from the work and descends as the bender is moved into engagement with the work, so that a very accurate and positive relationship between such parts is effected.

An oscillating shuttle coperates with the reciprocating needle, the oscillation of the one and the reciprocation of the other of such parts being effected in a novel and improved manner, as will be pointed out hercinafter.

These and other novel features of my invention will be fully described in the subjoined specification and particuiariy pointed ont in the following claims.

Figure 1 is a front elevation of a, sewingmachine embodying my present invention certain of the mechanism within the base of the machine being indicated by dotted lines to locate the same With relation to other parts shown in full lines, the machine-being shown at rest; Fig. 2 is a. left-hand end elevation and part vertical section, on a. larger scale, of the machine shown in Fig. 1, the section being taken on the irregular line 2*.2, Fig. 3; Fig. 3 is a top plan view, enlarged. of the left-hand end of the base with the coverplate removed from the bedplate and With the throat-plate almost entirely omitted; 141g. 4 is a detail in plan and horizontal section on the irregular line 4 4, Fig. 2, of the connection between the needlereciprocating mechanism and the shuttle to oscillate the latter; Fig. 5 is a vertical sectional detail on the line 5 5, Fig. 2, looking toward the left, of a` portion of the. means for effecting lateral vibration of the needle; Fig. 6 is a vertical section taken on the irregular line G-6, Figs. 1 and 7, to show the connection between the main or driving and auxiliary shafts, and parts adjacent thereto, looking toward the right, Fig. 1, and on an enlarged scale; Fig. 7 is e. horizontal sectional detail of such parts on the linel7`7, Fig. gloolring down; Fig. 8j

p'lan' view" 'of Athe throatfpiat, "de Fig; Qis a verticsts'eetonalfdetail' on the line 9 9',I Fig. 2, lookingftowardthe tached;

right, of the` needle-guide and adjacent parts; Fig. 10 is a sectional detail, enlarged, on the line 10-10, Fig. 1, looking toward the right, to be referred to;` Fig. 11 is a sectional detail of some of the parts shown in Fig. 10, but taken on the line 1111, Fig. l, and looking toward the left; Fig. 12 is a perspective detail of the actuating rockershaft for the bender, omitting the bearings therefor; Fig. 13 is a right-hand end elevation of said rocker-shaft and a portion of the operating pitman connected therewith; Fig. 14 is an enlarged detail view, principa ly in elevation of the feed mechanism shown in Figs. 2 and 3, in the position assumed at the end of the feed of the work.

Herein the longitudinally reciprocated eye-pointed needle enters transversely the bend formed intermittingly in the work, and as the feed of the work is parallel to the needle path, the needle is moved laterally in one direction for one thrust and in the opposite direction for the next thrust, in general as in United States Patent No. 404,863 granted June 11, 1889 to John Reece.

The base l, of suitable shape and size to sustain the operating parts of the machine, has an elongated opening 2, Fig. 3, in the bed-plate 3, for the reception of a cover-plate 4, Figs. 1v and 2, and a throatlate, to be referred to, and the main or riving shaft 5 extended longitudinally beneath the bedlate is supported in bearings 6, 7, said sha t having a clutch device of any suitable character, including a bandpulley 8 which runs loose on the shaft ex cept when the clutch is set in voperation by elevation of an arm 9, Fig. 1, attached to a. rock-shaft 10 mounted in the base., The clutch device is substantially the same as that forming the subject matter of United States Patent to Reece No. 367,063 dated July 26, 1887. A bent lever 11 fast on said rock-shaft has an attached returning spring 12, Fig. 6, the rear end of the lever carrying two upturned and adjustable screw- studs 13, 14, the former acting as a stop to limitspring-induced rotation of the rock-shaft. A hub 15 loose on the rock-shaft has a rearwardly extended starting arm 16 engaging the stud 14, so that when said arm is pulled down, as by a link 17, the rock-shaft 10 will be turned to elevate the controlling arm 9 and set the clutch in operation to start the machine. Said hub 15 has a frontwardly extended arm 18 which sustains the lower end of a longitudinally rigid link 19 passed up through a hole 20 in Vthe bed-plate and at its upper end entering a socket 1n a lever 21 fulcrumed at 22, Fig. 1, in the overhanging arm 23 secured to or forming art of the base 1. Strong springs 24 fixed y held at their lower ends are attached at their upper ends to the lever 21 adjacent the link 19, and serve to elevate the outer end of said lever, which latter constitutes a presser-foot controller.

The presser-foot 25 is attached to a presser-bar 26, Fig. 2, vertically movable in bearings 2T, 28 shown as forming a part of the outer end of the overhanging arm .lha depressing spring 2t) being coiled about the presser-bar between the bearing 28 and a collar 80 clamped on said bar and having a pivotally connected, upturned link 2&1, slotted at its upper end at 32, Fig. 1, to loosely receive a lateral stud 33 on the outer end of the presser-foot controller 2l. \Vhen the starting arm 16 is depressed and the arm 18 is lifted the link 1%) rocks the controller 21 against the springs 2l, and as the stud 33 is thereby lowered the'sprin'r 2!) is free to expand and depress the presser-bar, so that the presser-foot 25 will engage the work. Then the rock-shaft 1t) is turned to ei'l'ect stoppage of the machine the springs 2l, which are more powerful thun spring 29, act through the intervening parts to elevate the presser-Durand release the work. lt will be understood that the overhanging arm supports the presser-foot at such a point as will enable the work to be properly engaged when the machine is in operation. 'lhe depression of the presser-foot is limited by an adjustable nut 8i on the threaded upper end of the other suitable was 1er 35 surrouinling said bar below the nut and engaging the top of the bearing 28 when the presser-bin' descends under the action of the spring 29. lVhile the latter enables the resser-foot to accom- Presser-liar, va leather or' inodate itself to slig it variations in the thickness of a piece of work, and t0 the movements 0f the feed-block or bar the adjustment for a material change in the thickness of the Work to be acted upon is provided by the nut 34.

Herein I have shown the betaler-carrier as a bar 36 vertically reeiproeated in the bearings 27, 28 and having attached to its lower end the bender 37, which latter has u blade-like tip of usual character, tlxe width of the bender being in an upright at right angles to the needle path and line of feed of the work, the presser-foot 25 being eut away to clear the bender and prevent interference therewith. Collars 38, 3S) are clamped upon the bender-carrier between the bearings 27, 28 and a sleeve 40 is loosely mounted on said carrier between the collars. said sleeve being held against the upper collar by a strong spring 41 which seats on the lower collar 31), the sleeve having a lateral stud 42 extended therefrom to the right, Fig. 1. The extreme descent of the bender is positively limited h v an adjust- Iable nut 43 on the upper end o,f the be nderearrier, and a suitable Wa. lier 4l, the lat-er engaging the top 0f th nearing 28 when the the bender shaft, the latter near its outer` is' mounted at iis inner' end bender is in its lowest position, as will be ap arent.

'he throat-plate 45, shown seperately iii Fig. 8, fits into the cover-plate Yi und `is slotted at Y46 for the feed-bnr 47, Figs. 1 and 14, a dee wgroove 48 in the thront-plate crossing the slot at right a 'les thereto, the work bein bent or presse internnttingiv into the giove by the bender 37 in n wellknowii manner, and s needle-passage 49 is formed in me wsll of seid roove oppositeV the opening 50 in the opposite wall. Seid throat-plete is cnt away at its under side ndjaeent and communicating with the opening 50, es at 51, Vto accommodate the needlegiiide, 3o be referred to hereinafter.

Bem er cctuatzn mechanismwili now describe the novefgand pecnliar mechanism for actuet'in the bender, the prime mover for said mec anism being the main shaft 5, which has ai gear 52 inst thereon meshing with a like gear o3 fast on en auxiliary sheft 54 extended beneath the bed-plate to a. point below and near the needle path, see Figs. 1 and 3, said shaft being supported in bearings 55, 56 forming e pei-t of the bese casting, and also in the berin portion 6 before referred to. A short cran -srin 57 on the right hand end of the shaftv 54 has pivotally connected therewith et 57* the lower end of a strong and rigid 'tinain 5S extended upward through the d-plete hole 20 and pivoted at its upper end on e stud 59 on a rocker arm 60 fasst on a short rockersliiift 61, Figs. 1, 12, and 13horizontally journelcd in a beni-'in 62 on the overhanging erm 23, Fig. 1. gn practice the radius of the path of movement of the stud 59 is greater than the radins of the path of movement of the stud 57", so that the rotary movement of the shaft 54 is always converted by the pitmoii 58 into oscillatory movement of the rocker shaft 61', and thereby any tendency of the pitmiin to bend or twist and thereby revolve the shaft 61, when the miicliine is runnin-g at high speed, is e'ectnelly obvicted. Such tendency is also diminished by making the pitinen es strong and rigid as is compatible with weight, for in a highspecd machine the Weight of rapidly reciprocntin parts must be kept es low as possible. he pinnen connection between the auxiliary :ind 'rocker shafts gives a very smooth and easy motion, however, end one well adopted to secnre the Best resnlts in operation. A second, l rocker slieft 63 in a bearing 64 on the overlmnging firm and et its outer end in thclfieiiringl 28 forming a part of the arm, the shafts 61 and 63 being laterally oil'- sct und in parallelism and separated from each other axially, as shown in Fig. 1. For convenience I shall desigiiiicie` the shaft 61 asthe transmitter shaft and the shaft 63 as `the down stroke., n-ridtlie end having a rocker arm 65 to which is pivotzilly connected n, short link (iti, the lower end of the link being pivoteliy connected with the sleeve 40 on flic bender-carrier 36 by the stud 42, so tliiit e. direct connection is provided between the said carrier sind the rocker shaft (i3. Between the nearer ends of the two rocker shafts I have interposed a differential connection so constructed that the regidor osciliiition of the transmitter shift 61 imparts e diiiereijitisl oscillation to the shiifl` G3, whereby the hitter causes the bender to descend with a radnclly decreesing speed and torise Wit: n gradually increasing speed. To this end the diii'ercntinl connection coin'` rises e short de riding arm 67 fast on sini t 6i and pivotai .y connected by e short lin-k 68, Figs. 10 and 11, with e depending and longer anni V69 fast on the shaft (i3, the linie pivoting on studs '67", 69* projecting from the arms.- y

Referring to Fig. 10, when the pinnen 58 moves downward the rocker shaft 61 is turned in the direction of arrow 70 end as the arm 67 is swung to the ieft sind upward the erm G9 is swung in the sinne direction by the link 68', tbst the rocker shaft 63 is ti-irned in the direction of the arrow 70, tending to straighten thetoggle (i5, 66 and depress the sleeve 40 against the Spring 41, to thereby conse the bender 37 to more toward the work. While the arms 67, (i9 are thrisoperating the pivot 69* is movin to Word the' center of the shaft 61, elimini ing the length of theneilcctive lever arm, and ccnseqiiently the power exerted upon the shaft 63 nets with increased force, end the speed with which said shet V(i3 turns gradually decreases. lien-cc the sleeve 40 is depressed with o grsid'imily dccrciising speed but with gradually increasing force, until the foil singular movciiient of the rocker erm 67 is comi'iicted, and es the rice of the pinnen reverses the rois-tive movement of the trensmitter shaft 61 the rocker crm 67 swings back to the position simwn in Fig. 10, but in so doing the arm (i9 is moved with a gradually increasing* speed and the intervening connections elevate the sleeve 4f() with gradually increased speed and diminishing force. The spring' 4l normally holds the sleeve against the col-ler 3Sl on the bendercarrier, end when the sleeve is depressed ns described the sp1-ing transmits the movement to the lower collar 39 and to the corrier 36, moving the bender 37 intoengiigement with the Work (indicated by dotted lines -W, Fig. 1) und bending it. into the groove 48 in the throat-plate, .sind when further descent of the bender is stop ed by the mit 43 the spring,vr 41 fields while t ie singular movement of the shaft (i3 is coi lcted in the direction of the nrrow .7 Q, Figliih. Thus tlic bender is it rest diirin the iatterzpart of i rst port of thel upY stroke of the sleeve 40, when the circular movement of the differential connection and the shafts H1, (39 is etanpleted, reiferscd, and started in the opposite direction, the maxi' muni force heilig exerted upon. the bender while it is at rest andimaintaining the work bent for penetration by the needle. By this application of maximlum force the work is firmly held in proper'petsitiol'ijor the action of the stiteh-forming mechanism thereupon, and it will be manifest that were it not for the spring 41 and nutA 43 the bender 37 would not at any time be wholly at rest when in engagement with the work, the spring also performing the usual function of accommodating slight variations in thickness of the work.

The intel-'position of a spring between a fixed collar on a reciprocating bender-carrier and a slidable depressing member thereon is not of itself new. but this structure in combination with the ditlcrential connection between the transmitter and bender shafts (31, G3 and the variable action exerted by the same upon the bender, is new, so far as I am aware. i

As all of the movements of the differential connection are in circular and relatively short arcs the motion is smooth and quiet, even aty high speed, and the regular oscillation oi' the transmitter shaft A01 is transformed into a definitely variable'oscillation of the bender shaft (33.

The bender 3i' is stationary during more than half of the complete cycle of opera tions, equivalent to one complete revolution of the auxiliary shaft 54, so that the speeding up of thn bender-carrier in the remain ing period c `:cts the proper reciprocation of sald carrier.

lt will be manifest that by the adjustable stop-nut t3 the descent of the bender can be stopped positively at any desired point, and the spring 41 will yield more or less, when the lsleeve 40 is depressed, according to the predetermined polnt of stoppage of the bender.

The hub of the rocker arm 69 has a. second, frontwardly extended and downwardly inclined rocker arm 71 to which is pivotally connected the upper end of a link 72 jointed at its lower end to a crank arm 73 on one end of a short rock shaft 7 4 mounted in the lower portions of the bearinUs 6 and 56, see ldotted lines Fig. 1, said roc -shaft being operative] connected with/ the feed-bar 47, as wil be explained later. Said link 72 passes through the hole 20 in the bed-plate of the machine and for the greater part of its length is within the upright part of the hollow overhanging arm Q3, as shown.

The part 75 of the shuttle-case 76 has a. vertical hole drilled therein to fprm a bearing for the cylindrical shank 77 of the bevelvfaced needle-guide 78, Figs. 2 and 9, raised and lowered at suitable intervals in the recess .'1 of the throat-plate just behind the needle opening 50, see Fig. 2, said guide being raised on the forward thrust of the needle to penetrate the bend in the work, to prevent any downward deflection of the needle as its point is about to enter .the work. A ret-ractiner s ring T 9 for said guide surrounds its shanlk etweeu the bottom of the shuttle-case extension T5 and the foot of a bracket 80 clamped upon the shank, said bracket having an out-turned head 81 which carries anadjustable screw-stud 82 resting upon a rocking follower 83 fulcrmned at 84 and cooperating with the cam periphery 85 of a crank-disk 86. In practice said disk is rigidly connected by a crank-pin 87 with a. similar disk. S8 fast on the outer end of the shaft 54, said disks and the crank-pin being made as a solid forging or in any other manner whereby the requisite'strength and rigidity are secured.

No claim is herein made to the particular. construction of the needle-guide, its mounting, or the manner in which it is actuated, as it is substantially the same as shown and described in United States Patent No. 987,966 granted to merand another the 28th day of March, 1911.

he hub 89 of. a link 90 embracesjthe crank-pin` 87 and fits snugly between the inner faces of the disks, the other end of said link having a transverse and elongated sleeve-like hub 91 which is ivote'd on a stud 92 horizontally extended rom a block 93. Said block is pivotally mounted on a stud 94 carried by an arm 95 depending from and ixedly secured to the horizontal and longitudinally-reci rocated needle-bar 96 to which is secured t e eye-pointed needle 97, the studs 92 and 94 bein at right angles to each other. The need e-bar is slidably mounted in a yoke 98 having bearings 99, 100 which loosely embrace and rock upon a horizontal guide-rod 101 fixed in the base 1 of the machine at right angles to the shaft 54, and by a switch-cam 102 on the auxiliary shaft 54, see dotted lines Fig. 1, rocker 103 and link 104 said yoke` and needle-bar are vibrated laterally, substantially as in Patent No. 404,863 previously referred to. The link 104 is pivotally connected to an arm 105 depending from the bottom of the oke 98, as shown in Fig. movement of said yo te on the ide-rod 101 is cprevented by a collar 106 pinned to saidy ro and fitting into a slot 107 in the bearing Thestud92 is reduced and threaded at its outer end to receive a retaining nut 108, which revents any lateral motion of the linlehu i` 91, sald nut havin an annular head 109 which slides in a gui e-groove 110, Fig.4 5, in the underside of a fixed bar 11 isecured to or forming a part of the machine ase.

2, and longitu mal By means of the double ivot: connection between the link 90 and t yoke 98 the slight lateral rocking or vibration of the latter to shift the needle laterally on alternate thrusts is permitted without any binding of the parts, the guide-bar 111 cop- :ernting with the head 109, to maintain the stud 92 in a horizontal position as it is moved buck and forth to reciprocate the needle-liar longitndinnllv. That is, when the yoke is vibruted laterally the :lrm 95 swings about the stud {l-i :is u fulrcmn, and its said arm is tixedly mounted on the needlebnr 9G the hitter will turn slightly, but as the length ot' the lateral are through which the needle-bary is vibrar-ed is Yin actuel practire ubout 32 of en inch the turning mov-ement oi' the needle-bar isfahnost innppree-iable. The farces of 'the crank-disks and 8S cooperating with the adjacent ends of the large hub of the linlgin Vconjunction with the guide-bur 111. etliectnalily prevent any tendency oi the link il() to twist or turn,

til)

:ind u smooth, even motion is it-ttainedj.

As liest shown' iu Fig. 2 'the crunk-disk HG hns :it: its outer tnce a wrist-pin 112 eonnerfted by u link 113 witih a sleeve-like ross-head 11sl longitudinally slide-ble on the guide-rod 101 between titre beu-rings of the .volte 11.8, rotation of the disk Yrecizproearting .said cries-howl in parullelism with the needle puth. st-ud 115 depends from the (moss-hemd und extends freely through u slot tto' in the bottom ot the yoke, the reur end of :t link llt being pivoted on the stud, while the t'ront end of the link embraces a pivotstud 11T, Figs. 2 and 4, eccentrieully mounted on und depending from u horizontally swinging,r t'ork 11S iulerumed on u fixed stud ll. in 4the bottom of the slutttle-ruse 76 ut une side oi' its renter. The oscillating slutttle 120. Fig. il. ot' the well known Singer type, ref-ts in the shuttle-euse und its eentrul .spindle 121 extends downwurd through the bottom of the euse und to the lower end ol' the spindle is fixed u rudiul arm 122, Fig. 1. euri-ying u roller or otheigstud 12? which enters tht. :dotted fork 11H. Suid shuttle,

tmk. und the ronneetious between the snid parts :tre ol' well known eonstrurtion.

While the wrist or crunk-pms 87, 112 ure `not ex-.u-tI vopposite euch other, owing to the litl'erent horizoninl paths in which the other ends ot' the respective links 113 und Si() more. the suid erotik-pins nre so nearly in opposition tlmt, with the opposite movements rd the connected purts, vibrution is reduced to :t minimum, the momentum of mrlsmioving in bmxadirwtion being substuntiidly vomiterhnlnneed by the limitierttum of other futrts moving in th'e opposite t l i roet'ion.

' lim osrlhwting shuttle shown inl Fig. 3 has :t cui-red .shelf-like support 12-1 udjsuent the hook 127 to .-utnort the point ol' the needle after itlisitisisedthronh the bend: the work and while the shutt e hook entere the loop of thread, the support preventing any accidental displacement of the needle whiehv might interfere with the proper `fnnctioni.

the hook. The work is fed` 1n the direction of the longitudinal reciprocation of .the needle, each descent of the bender 37 fomiing n bend in the work, while the lateral vibration of the needle causes the latter. to pass through the bend first at one and then :it the other side of a fixed line, in st well known manner.

The auxiliary sli-aft 54 is in pmeftieethe,

common actuator or prime mover for the' bender, the needle and the shuttle, ksaid shaft being posi-tively with eaeh of sind psx-its in Such manner that they will Valways he properly timed in their meramente tive to eheh other, cams and gea-ring having been completely eliminated, in all of ,the connections, so that 'the movements of the parts are smooth and free from improper vibration. y

l have not herein shown the needle-thread nor the usual tension und take-np devices for controlling it as such deviees muy be of any usual or suite-tile character and form no part of my invention.

The feed-motion, for the werfe-The rt'eedi motion is most cletvrly shown in Fig. 14,' the feed-bur 47 forming port, of e block 126 fixedly uttuehed Vto one end of n -link 127 having :1t its front end-a Interni Pin'12t5; ont,

which is piroted n toggle member .129', joint` ed at, 130, to u second member 131;` mede-as an urm tust on the rock shuit 74 hereinhefore referred to. 'As the toggle is alternately straightened und bent by the oscilla?. tion of the slm-ft. 74 the `feed-bur will, be raised und lowered, respectively, 'mtu sind out ot feeding engagement; with the under side of the work, the turning of the rock shaft 113 in the direction ofthe arrow 70, Fig. 10, first etl'coting :L very slight: lifting und then u material `lowering of the feedlmr from the position shown in Figs. 2 and 14, wherein it; is illus-tinted et the termina,-

tiou ot the feed v:md just its the rook-shaft).`

74 is about to be rocked from lett; to right, Figs. 2 and 14. Inorder thwt the feed-,bar may properly perform 1its tnnetons it. must rement free from :my substantial verttirtl movement long enough to be moved from the lui-ginning vtothe end of the feed stroke. us otherwise the engagement with Ythe work would be of too shorty duration to effect feed thereof positively tmdlefinitely. The

ttrggle members 129, 131 nre so setas tti-bei,`

moved from one side ofrdend center to dond reenter, und then pest it, und referring .to

Fig. 14 it: will ibo Ysetmslthnti the middle joint 130 of seid toggle Slightly tithc left. of u line joningtfhe renters of the ports t28 und 74. the feed-stroke having been com? pleted. Now when the shaft 63 is rocked, as has been described, to de ress the link 72 the rock-shaft is turned to Erst straighten the toggle and then to bend it, but to a greater extent to the right of its straight position, such latter bending lowering the feedbar as the bender descends, and while actually the pivot 1'28 moves in an are during the initial straightening and first part of the bending of the toggle such arc is so flat as to be practically a straight line, and the said pivot moves reversely through this t'lat arc when the toggle returns to the position shown. Consequently during the first part of the downward movement of the link 72, and during the latter part of its upward movement, the feed-bar 1s practically at rest so far as concerns vertical movement, and during these rest periods, as they ma be termed, the fore and aft movement o the feed-bar is eii'ected. The rear end of the link 12T is pivotally connected at 132 with the upper end of a lever 133 fulcrumed at its lower end on a fixed stud 134 carried bythe base, said lever being arranged to swin in a vertical plane parallel to the line o 'feed of the work. .1\n elongated slot 135 in the lever receives an adjustable stud 13G on which is pivoted the rear end of an arm 13T tuning at its t'ront end an o )en head 138, Fig. tft, which surrounds and constitutes a follower for a feed cani 139 fast on t'he auxiliary shaft 54. The said cani acts through its follower, the lever 133, and link 12T to cil'eet the fore and aft motion of the feedbar, as will be manifest, there beine' no camindnced movement of said feed-bar until the cam has made about one-quarter of a revolution from the position shown, duringl which period the feed-bar has been retracted from engagement with the work by the action of the tog 'le 12%), 131. The continued revolution of tlhe cam 139 brings its high part. into cooperation with the right-hand end of the head 138 thereby swineing the lever 133 to the right, Fig. 1=l, ant returning the feedba`r to a position ready to be again elevated into engagement with the work prio'r to the beginning of the feedstroke. A t' ter the toggle 129, 131 is operated to raise the. feed-bar into engagement with the work thc cam operates upon the follower to etl'ect the, feed-stroke of the feedbar and the work is fed to the left, viewing Figs. i and H, this feed-stroke beine' accomplished during the latter part ol? the upward movement of the link 79 and consequently when the feed-bar has practicallyl no vertical movement, as has been explainet 'Ilu` cycle is now completed and, general] speaking. is ot' the tour-motion type wel known in the art. 'lhe length of the feedstroke is regulated by adjustment of the stud th toward or t'rom the 'tuleruln 12H ofthe rot-king lever 133, and to etfect such adjustment conveniently the stud 136 and the clamping nut 13Gl thereon are extended through a slot 140 in the side of the base, see Fig. 3. As every movement of the feed-bar is effected ositively and-it is always under the contrai3 of either the feed-cam 139 or the mechanism, including the togglei129, 131 for raising and lowerm it, there is no lost-motion and the feed-motion will operate with accuracy and precision irrespective of the speed at which the machine as a whole is operated.

ho further description of the operation of the machine is necessary in view of the foregoing explanation of the diii'erent instrumentalities, their functions, and th manner in which they operate i Various changes or moditiiiations in details of construction and arrangement may be made by those skilled in the art without departing from the spirit and scope of my invention as set forth in the annexed claims.

Having fully described my invention, 4

what I claim as new and desire to secure by Letters Patent is:

1. In a machine of the class described, a. horizontally-reciprocating needle-bar, having an attached eye-pointed needle, and a shuttle to coperate with the needle, combined with a rotating shaft having two crank-pins at opposite sides of its center, a link operatively connecting one of the crank-pins and the needle-bar, a reciprocating cross-head, a link connecting it with the ot er crank-pin, the needle-bar and crosshead being moved in op osite directions, and operating connections between the crosshead and shuttle to oscillate the latter.

P. In a machine of the class described, a h1irizontally-reciprocating needle-bar having an attached eye-pointed needle, and a shuttle to coperate with the needle, cornbined with a rotating shaft, two concentric disks rigidly connected by a crank-pin, one disk being rigidly and centrally mounted on the end of the shaft, and a second crankpin on the other disk, said crank-pins being at opposite sides of the center of the shaft, and separate operating connections between the needle-bar and the shuttle, to reciprocate the former and oscillate the latter, the operating connections being moved in opposite diret-tions to equalize strains and overcome vibration due to momentum of the moving parts.

3. In a machine of the class described, a horizontally reciprocating needle-bar having an attached eye-pointed needle, a laterally rocking yoke in which the. needle-bar reeiproeates, and a shuttle to cooperate with the needle, combined with a rotating shaft havingr substantially opposite crank-pins, a. depending arm on the needle-bar, a block pivoted ou said arm and having a lateral stud, a linitpivotalty connecting said stud ing rocipiocntion of the needlefbonguidH ing menus ffmthc outer en rl of,tl`1e eind," nml. connectioim bet-Ween oneof snitlclankitlisksimil the shuttle to oscillanteE the letter, thoeonneetion zbetfweemlsaid `link and the "bracing .the `crunk-pin yand fitting snugly and one of the crank-pins, a, cross-head movable in parallelism with the needle-ber, connections between the cross-head and shuttle to oscillante the lutter, a link connecting said cross-head and the second @mnh-pin, to

reciprocate ,the former, the ,cross-head and needlebar 'bein moved oppositcly, and means actuated y the crank-shaft, .to rock the yoke and effect lateral "ibration Of lthe needlebar.

4. :In n sewing machine, 4means ,to rfoxfm 4bends in bhe work, stitch-forming mechanism, i1|t-,l\\clinf.jr u ihoifizon'twllvfreciprocagin neetllefbgir :buying u ,attached reyecinte needle :to penetrate t 1e :bends ienne in ,the

woifk .on .auch [forward stroke c laterallyibmted slmpmrt ,for the ,11,1eedle1bnr, sind a Shuttle wo fwiipmte .with .the needle, ycomfbined `with .a @rigidly attached um depend- .ing from .the needleban p lntelfally extend- .ed stud ,'fulcrumed mi said arm panallel Ato the .neelcibn ,a .rotating shft :having crnnledisks 4rigidly connected by o crank-l pin, n link ehuving at one .end n Ehub `@n1- between said d$ks,lthe otheizend, of snidlhnlr having .a transverse, elongated `hill) to embmcefthe said lateral stud, Asnidgl'ink effectnecdlebnr permitting llateral Yilglyntional movement thereof.

5.1In a. sewing-machine,,means to foi'm bends inzthe work, stitchffomning mechanism, including a;horizontallyfreciprocating l iieedlefbnr having y.nn attached eye-pointed needle to penetrate the bendsi foriuedin vthe worten I'z'ttem'llyfvibiotcd yoke in which the needleabm i reci proco-tes, uid ,an oscillating shuttle combined with nf .xedgnide-rod porihllell to Lthenecdle path, and ,on which said yoke rocks,nu cross-head reciprocnted on z said mide-rod, connections between y the', cross- 2 lend and shuttle to. oscillntcqthe latter, a

rotating shaft having two crank-pins at `opposit'e sides -ofnits c elltelgn link Q Qllnecting one o'f snidy crankpins nndgtlle crossfhed' i to reciprocate fthe; latten, a\ nd,ing1epe|ldent connectonsbetween 'the other mult-pino and f itheneellbhn yto .reciprocate 4the "stime 1n the yokewhile permittinglnternl xyihxiution thereof. l

nnflnn sewing machine; inclinato form bends? `inl the win-k, including, u ,vertically-A movhble hendemm'ier land inw attached bender,` and .,n, `rockl nhgift. opegntiwely com netzteil with/fthe bender-emilion ,eitefliefornb 'ing menhzmism,` includ ing n r limtigqontnllyl'et-iprm'mng .needle-lmp hinting nl), nttzyched eyefpoilitwlfnocdle to, nenetnatetfhc; bends fomnedin the wolleinici mioscillatin ,shuttlc, combined with n ltot-atingshaft ying .the il: 3 strolielof seid bgndell shafts arr 1g;

8.111 n sewing mnchine, yja. throatplate slmftsn#ranged inA psirnlslel a connection i between the tbeiislel" $1111 en@ Wider-Q- rien to, leiprpcete thqflutqtemfa rotating shaft having Crank-erm, afcmilkrerm Qf swim' sind, tlzen's'nlitter 4shaft., combined :with n. 4difbender fslia-ftfinv Einjection with :increasing spe'flwa ,lecleasing 4force on.

nteyinittingly to V4folfm ends Uwvingmhine neuroni-pluie bender to form bends intermittingl y in the work, a bender-carrier to which the bender is tixedly attached, separated collars fixed on the carrier, a sleeve slidable thereon between the collars, a spring between the sleeve and the lower collana shaft having an attached rocker arm, a link connecting said arm and the sleeve, and means to oscillate the bender shaft with decreasing speed and increasing force as the sleeve is depressed and with increasing speed and decreasing force asV the sleeve iselevated, to therebyfapply through the spring the maximum force at minimum speed to the bender when it is forming a bend in the \vork,the spring yielding during the period when said bender is at rest in engagement with the work.

11. `In a sewing machine, a bed-plate provided with a throat-plate having a bending groove, an overhanging arm on the bedplatc, horizontal transmitter and bender shafts mounted in `parallelism on` the overhanging arm, a bender-carrier having an attached bender and vertically movable in said arm, the bender cooperating intermittingly with the Ithroaeplate to form bends in the 'wm-k, 'iieans to impart a regular oscillating motion to the transmitter shaft, a ditt'erential connection between it and thc bender shaft to oscillatc the latter at a speed decreasing on the down stroke and increasing `on the up stroke of the bender-carrier, and cpcrating connections between the bender shaft and bender-carrier, to reciprocate the latter and the attached bender.

12. ln a sewing machine, a hedplatel provided with a throat-plate having a bending groove, an overhanging arm on the hedplate, horizontal transmitter and bender shafts mounted in parallelism on the overhangin arm, a bender-carrier having an attached )ender and vertically movable in said arm, the bender coiipcrating intermittingly with the throat-plate to form bends in the work. a continuously rotating shaft, a pitman opeitativcly connecting it with the transmitter shaft to impart to the latter a regular oscillating motion, a ditlerential connection between the bender and trans mitter shafts, comprising rocker arms and a connecting link, to iscillate the hendel' shaft 'at a vai-ving speed and with inversely vai-ving force. and an operating connection between the bender shaft and bender-carrier to reciprocate the latter with variable speed :nid force.

lil. lfn a sewing machine, means to form bends inte'rlnittingly in the work. including a vertically .movable bender-carrier having ,an attached bender, two parallel andhorirzontal rock shafts, each having adcpcndmg arm, said arms being on the adjacent ends nf the shafts and of unequal length, a link pivotally connecting the arms, an operating connection I between one shaft and the bender-carrier, to reci recate the latter, and i means connected wit the other Shaft to oscillate it with a regular movement, the connection between Ysaid shafts imparting a, variable oscillating movement to the shaft connected with the bender-carrier.

14. 1n a sewing machine, means to form bends intermittingl)7 in the work, including a vertically n'rovahle bender, an oscillating shaft, and an operating connection between it and the bender to reciprocate the latter, combined with a rotating shaft having a feed-cam thereon, means independent of the connection between the oscillating shaft and `the bender and intermediate the rotating and oscillating shafts to oscillate the latterfrom the former, a feed-bar, connections between it and the feed-cam to impart positive fore and aft movement to the feed-bar, and separate, positively acting connections between the oscillating shaft and the feedbar and independent of the connection between said oscillating shaft and the bender, to raise and lower the feed-bar as the bender is raised and lowered.

15. In a sewing machine, stitch-forming mechanism, including a horizontally-reciprocating and laterally vibratcd eye-pointed needle, intermittingly operating means, including a vertically-reciprocating bender, and a connected, oscillating bender shaft, to form bends in the work transverse to the needle path and to' be penetrated by the needle on cach forward thrust, combined with a rotating shaft having a feed-cam thereon, independent connections between said shaft, the bender shaft, and the needle, to oscillate the bender shaft and reciprocate the needle, a feed-bar movable parallel to ithc needle. path, connections between the feed-cam and said feed-bar to impart a fore and aft stroke to the latter, a toggle connected with the feed-har to raise and lower it. aml means operatively connected with the bender shaft to actuate the toggle.

16. In a sewing machine, stitch-forming mechanism, including a horizontally-reciprocating aml laterally vibrated eye-pointed needle, intermittingly operating means, including a vertically-reciproeating bender, and a connected, oscillating bender shaft, to form bends in the, work transverse to the needle path and to be penetrated by the needle on cach forward thrust, combined with a rotating shaft havingr a fccd-ea1n thereon, independent connections between said shaft, the bender shaft, and the needle, to oscillate the bender shaft. and reciprocate the needle., a` feed-har movableI parallel ton needle pathfa link xedly connected at one 2o end with `the feed-bar, o lever pivotall con- A other end of the lin and nected with the having e fixed fulcrum, a. follower member rook the lever and threllgll aid link; impart e fore and aft stroke to' the eedber, end means operatively connected with and actuated by the bender shaft to raise and lower the feed-bar.

@needing Said lever and the feed-cam, to 17. In a sewing machine, stitch-forming j leek the lever and through said link impart 25 mechanism, including a horizontally-reci@ a. fore and aft stroke to the feed-bar, a togrocating and laterally vibrated eye-.pointed le connected Withthe feed-bar, to raise end needle, intermittingly operating menus, in, ower 1t by strelghtemng and breakln cluding a verticallyneciprooating bender, movements, respectively, o the toggle, an and a COllIleCd, oscillatinghender shaft, to toggle-actuating devices connected with and 30 operated by the oscillating bender shaft.

In testimony whereof, I havej signed my name to this specification, in the presence of two subscribing witnesses.

' cinnsmn H '.l. nAGELsTmN.

Witnesses:

JOHN C. EDWARDS, FREDERICK S. GREENLEAF.

form bends in the Work transverse to the needlel path, and, to be penetrated b thel needle on each forward thrust, com ined, with a rotating shaft having e foedcuin) thereon, independent connections between, said shaft, the bender' ehaft, and the needle, to oscillete the bender shoft and reciprocate the needle, a feed-bar movable parallel to the

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