US1060689A - Sewing-machine. - Google Patents

Description

W. A. MACK.

SEWING MACHINE.

APPLIUATION HLBD Nov. a, moo.

1,060,689. Pawnamay 6,1913.

7 SHEETS-SHEET 1.

W. A. MACK.

SEWING MACHINE.

APPLIGATloN FILED Nov.3,19oo.

Patnted May 6, 1913.

WV. A. MACK.

SEWING MACHINE.

APPLICATION FILED NOV. 3, 1900.

Patented May 6, 1913 7 SHEETS-SHEET 3.

W. A. MACK.

SEWING MACHINE.

APPLICATION FILED Nov. s, 1900.

Patented May 6, 1913.

7 SHEBTS-SHEBT 4.

wif/mesmo W. A. MACK.

SEWING MACHINE. APPLICATION FILED NOV.\8, 1900.

1,060,689. Pdtemed May 6,1913.

7 SHEETSSHEET 5.

Y @Ui/tngo@ y, l 3 n u@ n to L W. A. MACK.

SEWING MACHINE.

APPLICATION FILED NOI/.3,1900

1,060,689. Patented May e, 1913.

7 SHEETS-SHEET 6.

W. A. MACK.

SEWING MACHINE.

APPLICATION FILED Nov4 s, 1900` 1,060,689. Patented May 6, 1913- SHEBTSAdSHBET 7 f J1/rnc utoc $9 W mnd/vaan:

UNITED sTATEs vPATENT omnes.

WILLIAM A. MACK, OF CLEVELAND, OHIO, ASSIGNOR TO STANDARD SEWING MACHINE COMPANY, F CLEVELAND, 0HIO,..A.l CORPORATION OF OHIO.

SEWING-MACHINE.

. spcification of mim raient. Patented May 6, 1913. Application filed November 8, 1900. Serial No. 35,395.

ment the presser is again lowered into cnga ement with the work to hold the saine while the helper-bar is raised and moved backward with the other members of the feeding mechanism to their starting position. n such manner, the two strips of inntorial to be stitched together being lirnitv gripped at all times duringr the sewing operation, and, during the feeding movement 4being freed from any drag or strain thereon, insures the feeding together of two strips in almost absolute unison.

Another object of this invention is to inir'ove the take-u mechanism so as to render To all fnv/rom, it may concern Be it known that I, Vtinniaiu A. Macu, a citizen of the United States, and a resident of Cleveland, Cuyahoga county, State of 5 Ohio, have invented certain new and useful Im )rovements in Sewing-Machines, of which the following is a specification, reference being had to the accompanying drawin forming pai-t thereof.

.lhis invention comprises improvements m certain parts of the feeding and thread controlling mechanism of the machine, and has particular reference to that class of sewing machines, termed needle-feed machines, although not limited in all its features thereto.

.One of the objects of my resent invention is to provide an improvedp feeding mechanism by which two strips of material of the same length and adapted to be stitched-toether may be so fed in unison as toliisure gothv ends coming out even at the end of the sewing operation.

In a machine employing only one feed, whether an upper or lower one, where one strip or piece o goods moves in contact with astationary sur ace and the other stri 1s enga ed by the feed, that stri againstw ich the ed acts is caused to gat er or wrinkle to a greater or less extent by reason' of the forward action of the feed against the Same and the dra produced on the upper or opposite strip y the presser-foot or other st-ationary surface against which it is held in contact, thus necessarily causing one strip to become shorter thany the other during the sewing operation and so preventing their ends nis ing or coming out even.

In accordance with niv present invention, I combine with a needle feed mechanism embracing a lower horizontally moving feed member, an upper feed member or hel er-l bar for cooperating with the said lower eed member to grip tie two strips of material between the same and act in combination with the needle in moving or feeding said stripe in unison. A mechanism operatively connecting. said helper-bar and `the presserbur operates to lower the former into gripping en agement'with-the work and, simultaneous y with such engagement, raise the presser from its holding engagementwith they work so as to permit the latter being moved or fed without'an dra yor strain 55 thereon. -At the end` of t e fee ingmoveautomaticall adjust-able in its action to conform to the iffcrent lengths of stitch.

Takempdeviees are usually driven froin the driving shaft of the machine through the medium of grooved cams or other intei-4 mediate mechanisms wliich, after becoming worn, creates more or, less noise and friction and'also renders the take-up less efficient and regular in its action. In accordance with mv invention, a take-up device, consisting of a ever arm arranged to operate on the front side of the faceplate, is rigidly connected with the ordinary needle-bar pitman which transmits movement from the rot-ating crank on the driving shaft to the vertically niovable needle-bar. The take-up, as thus supported, is operated by said pitman to receive a compound vertical and vibratory movement and cause its ends, through openings direction toward and away from certain stationary thread guides so as to properly liandle and control the thread in the formation of stitches. A take-u thus supported and actuated will necessari y be both regular and positive in its operation.

A further and important feature of tlu` invention is the adjustment. of the take-up and feed. As well understood, the distant-ev of movement of the feed determines the length of stitch, and, according as the stitch is longer or shorter, a greater or less amount of thread is required for the same. Consov quently, by adjusting the horizontal throw ha the needle-bar, the movement of the uecdhz bar pitman will also be thereby changed and so regulate the `action of the connected takeA up to-conform to the changed or adjusted movement of the feed. The invention also 1t positive and e cient in operation, and also in which t-he thread is passed, to move in a l of the feeding members, one of which is l includes various other improvements in the sewing mechanism, all of which will be fully set forth in thefollowingdetailed de scrption, in which reference is made to the accompan ing drawings forming part of this s eci ication.

Re erring to the drawings: Fi ure 1 is n side elevation of a sewing inaciine einhodyng my invention, with the bed-plate in section. Fi 2 is an enlar ed front end elevation of tlie same with t e .face-plate removed. Fig. 3 is a. vertical section through the front end of the machine arm, taken on line 3-3 of Fi 4, also showing n portion of the needle-iur. Fi 4 is a horizontal section through the ront end of the machine arm, taken on line 4-4 of Fig. 3. Figs. 5, G, 7, 8, and 9' are front end the difelevations of the machine showin assumed by the ta e-up and ferent positions feeding devices during the formation of a stitch, 'and Fig. 10 is a side elevation of the frontend of the machine, showin the side opposite that shown in Fig. 1, an with the parts in the position shown in Fig. 5. Fi 11 and 12 are enlarged detail views of t e work-engaging portions of the feed mechanism, partly in section and corresponding in ppsition with that of Figs. 7 and 8 respective Iny said drawings, the sewing machine head or frame comprising the bed-plate 1 and the overlian ing arm 2, the upper or main driving sha t supported in bearings in said arm the lower s nttledriving sha t: 4 supported in bearings on the under side of the bed-plate and driven from the upper shaft through t-he medium of operative connections, and the rotary shuttle 5 driven from said lower shaft 4 through 'the niedium of an intermediate shuttle-driver, are all substantially as found in the Standard sewing machine upon which, in the present instance, I have applied my improvements.

The lower member of my improved feeding mechanism consists of a horizontally reciprocating feed-bar 6 having a projection or dog 7 on its upper surface which projects through an elongated slot 8 in the throat-plate 0 so as to engage with the under side of the work. This feed-bar 6 adjacent to its opposite ends is supported and guided within a groove 10 in the under side of the bed-plate as clearly shown in Fi 1, the saine restin i at one end upon a. rol 11 attached to tie front end of the bed-plate, and at its opposite end being pivotally connected at 12 with a short crank-arm 18 on the front end of a rock-shaft .14 from which it receives its longitudinal movement. The two upper members of thefeedinigs mechanism, consisting of the helper-bar havin a floot 16 cooperating with the projection of the lower feed member in gripping the work or material interposed between the same, and the needle-bar 17 carrying the needle 18 for entering the work, are both loosely supported in bearings in the upper endof the machine arm and adjacent to their lower end passed through a block or gate 10, which latter is pivotally connected with a horizontally reciprocating har 20 from which the he per and needle hars receive their lateral or feediiw movement. This har 20 is supported to slide within n seat 21 in the lower end of the machine arm, as clearly shown in Fig. 3, and is operated from a cam or eccentric 22 on the upper driving shaft 3 in a manner as follows: A lever 23, mounted on a short shaft 32 which is journaled in a lug 24 on one side of the machine arm, is pivotally connected at its lower end with the outer projecting end of the bar 20 at 23', and adjacent to its upper end is provided with an elongated slot 25 in which a stud 26 is adjustably supported. A second lever27, pivotally supported in a lug 28 on the machine arm in a position above the said lower lever 23, is provided with a face-groove 2) on its lower arm havin a sliding block therein which connects 'with the inner end of said stud 26 on the lever 23, and at its upper end is pivotally connected at 30 with the outer end of a reciprocating rod 31 which is connected with and driven by the said cam or eccentric 22 on the driving shaft. By such arrangement of parts reci rocating movement is communicated to tie bar 2O from the driving shaft and by adjusting the. ivot connection or stud 26 back and forth in the slot 25 .the len h of movement of said bar 20 and there y the lateral throw of the helper and needle bars may be regulated.

As a means for operating the lower feed bar 6 in unison with the upper feed members, the shaft 32 which carries' the said lower lever 28 is extended through the supporting lug 24 and provided on its rear end with an arm 33 rigidly connected therewith, as shown in Fig. 1. The end of this arm 83 is bifnrcated and engages with a roll or block carried by an arm 34 of a rockshaft 35, which latter is mounted in hearings adjacent to the opposite ends of the machine and provided at its rear end with a second arm 36 which connects, through themedium of a pitman 37, with an arm 38 located on the said lower rock-shaft 14, which latter is mounted in bearings on the under side of the bed-plate and provided with the arm 13 at its front end connecting with the feed bar as before described. A

When the lever 23 is operated from the driving shaft to receive a vibrating movement, its rigidly connected arm 38 is likewise operate and communicates a rocking more 'merit to the lower shaft 14 through the inellt) dium of the connections as described and so causes the arm 13 at the front end of said shaft to vibrate and so give the feed bar 6 its horizontal reciprocating movement. The upper and lower members of the feed bein t. ius operated from the driving shaft throug)i the medium of the saidlever 23, it will e understood that the one adjustment of the latter caused by the shifting of the stud 2G will regulate the horizontal throw of both said upper and lower feed members and cause them to always move in unison whatever their length of throw may be.

The presser-bai- 39 is held, in the usual manner, with a normal downward pressure by means of a coiled spring 40 which has a bearin at one end against the upper inner presser-bar block 41 by means of a ivotscrew 45, another arm extending loose between the said lugs on the hel r-bar lock 42, and its third arm being bifurcated-and embracing the lower end of an arm 46 which is secured on the'end of a short shaft 47 journaled in bearings in the upper frontend of the machine arm 2. This shaft 47as most clearly shown in Figs. 1 and 3, extends through the arm 2 and is provided at its rear end with a second rigidi connected arm 48, which lattcr'connects with the inner end of the eccentric rod 31 through the medium of al pitman 49. In the operation of the machine, the inner endy of the eccentric rod 3l receives a vertical or up and down movement which communicates a rocking movement. to the shaft 47 through the medium of the connections referred to, and so causes a laterally swinging or vibrating movement-to the lower end of the arm 46 at the frontk end of said rock-shaft'which operates the lever 44 in a manner as will hereinafter be described.

'lhe presser-har 39 and helper-bar 15 being operativel connected through the medium of the `lever 44 in the manner described, it will be understood that the presser-bar spring 40 serves to exert a yielding downward pressure upon .the'fhelper-bar as well as the presser-bar, vertical movement of either one or both of said bars being permitted by the sliding connection of thou per bifurcated endof the lever 44 with th saidvibratingrarm 46 assliown. vIn order to raise the helper and presserbars'forthe purpose 4of releasing-theiwork, theblock t1 on the presser-bar is adapted to'be engaged by a suitable lifting-device iu the usual manner, and, bv reason of the lever 44 connecting with the blocks on both of said bars and being guided by the arm 46 which is rendered stationary by, the stopping of the machine, the helper-bar is caused to be raised and lowered in unison with the presser-bar. Any suitable means might be employed for raisin the presser and helper bars, one means, as herein shown, consistingr of an elbow-lever 50 which is iivotally suppoi'ted upon the side ofthe mac iine atl with one end iaving connection with a vertically movable plate 52 which is arranged to slide upon the outer wall of the machine arm and provided with a lower inwardly turned end 53 projecting through an opening in the arm into a position beneath the presser-bar block 39 so as to engage therewith, as clearly shown in Fig. 2, and the opposite end of said elbow lever extendin downward through an openin in the be -plate into a osition beneath tie latter to be operated y an suitable actuating means. The ordinary and-operated lifting lever, indicated at 54, is also provided, the same as herein shown being adapted to engage with the inwardly turned end 53 of the plate 52 in raising the presser-bar.

In the operation of the machine as described, after the work has been pliiccd under the re ular presser-toot in the usual manner an the machine set in motion, the helper-bar moves downwardly from the position shown in Fig. 5 to that shown in Figs. 6 and 2 so as to grip the work between the same and the lower feed member 7, while simultaneously with such gripping of the work by the helper-bar, the presserfoot raises from engagement with the work to the position shown in Figs. 7 and 8 so asl to permit said work being fed or carried forward by the feeding members without drag or strain thereon. Such action of the presser and helper bars is secured in a. inanner as follows: The lever 4.4 being rocked by the vibrating arm 46, when the helperbar is lowered into gripping engagementwith the work and becomes stationary, the said lever is caused to iivot or fulcruni between tlie lugs on the helper-bai' block and so raise its op iosite end and the connected resser-bar. pon the return swing of said over, when the resser reaches a position in engagement with the work, the lever will of course fulcruin u on the pivot-screw t5 in the presser-bar iilock aud so raise the helper-bar. In this manner, one bar is caused to be brought into holdingr or gripping `engagement with the work before the other rises therefrom, both of the same being in engagement with the work only as the lever 44 and its actuating arm 46 move past a central vertical line.'v To continue with tho feeding operation of the parts,

after the work has been gripped-between I the upper and lower grippin v members'of the feed as described-but be ore any for-y ward movement of the same, the needle first descends through the work as shown in Figs. 7 and 11, passing through the needle opening 16 in the feed membcr- 1G, and, while in the work and during its movement to throw out the loop, is moved laterally with the said gripping members of the feeding mechanism and as a part of the latter to feed or carry the work forward. After the several members of the feeding mechanism have reached the limit of their feeding movement as shown in l `igs. 8 and 12, the needle first rises from the work and the presser moves downward into engagement with the latter, while inunediately following such engagement, the helperbar, as before descri vd, rises from its engagement with the work and is swung backward into position to be n ain lowered into gripping engagement witti the work at the starting point of the feeding movement.

In ordcr that the helper-bar may be adjusted to remain in engagement with the work a greater or less engtll of time according to the length of its lateral or feeding movement, or in other words, to remainin gripping relation to the lower member 7 of the feed according to the length of the horizontal feeding movement-of the latter, i I have provided the rear arm 48 on the upper rock-shaft 47 with an elongated slot i 55 therein, as shown by dotted lines in Fig. .f 3, whereby the connectingl end-ofthe pit-' i man 49 may be adjusted 1n a direction to'- ward or away from the shaft-47.s`o asto i vary the extent of the rockingmovemet-l of the latter and thereby thettbrow of-its front arm 46, the throw of.wliich latter, being greater or less, operates the lever44 so as to hold the he] er-har in gri ping-position agreater or` ess length o time,.as will bc rcadilv understood.

By employin the up )er and lower members of the` feeding mecllianism for grippingthe work upon opposite sides and retaining such grip durin the feedin movement g and until the worli is released, am enabled to provide said feed members with smooth gri )ping surfaces whereby work or materia of any character, such as soft kid leather for instance, may be fed without liability of being cut, marked, or otherwise' dama ed. Such'feature is very important as wi be obvious. lhc presser-foot ls-also provided with a smooth under surfacefor enga ement with the \v'ork,but.it's upwarf ly finclined toe, .indicated".at'-thzis formed with a roughened.-surface'on:its-under'side for the= purpose-0f engagin Cany very abra t scam or seamsin-the-wvor 'and prevent txe latter from slidin or being 'forced backward in the evento the needle part of said other than t vconnection between such 'pitman G1 is vwith the rotating crank G3 on the front end of the upper fopposite lower end with the block 64 on the lf vertically movable needle-bar 17, in the 'usual manner. ition, whereby fmoved in a circular fend in a substantially vertical path, a comf pound vertical and sion device, the loop or eye of the ordinary slack thread :throuh the eye 67 o and helper-bar heilig raised or disengaged from the work at the time of such engagement, as would be liable to occur if the under surface of such upwardly turned or inclined toe presented a smoot i surface.

My improved take-u indicated at 57, consists o an arm whici is arranged to operate on the front side of the face-plate and provided with a short. rearwardly projecting extension 58 about midway between its ends which extends through an elongatml slot 59 in said face-plate and is rigidly attached to lugs 60, (S0, on the ordinary needlebar pitman (l1 by means of screws 462, (i2, as clearly lshown in Figs. 2 and 8. By such connection, the take-up arm 57 is carried and caused to operate as though an integral ilman, and any lsuitable means, lat shown an( described, may therefore be employed for securing rigid parts. The said pivotally connected at one end di'ivine shaft 3 and at its By means of such connecone end of the pitman is path and the opposite lateral movement is given to said pitman which is communicated to the connected take-up arm in a manner as follows: The said take-up arm, being attached to the pitman adjacent to its pointof connectionwith the needle-bar as ,clearly shown in Figs. 2 and 3, is caused to move in a '.ibstantiallystraight vertical ,path at. its centerl orl point of connection with the-pitman and be rocked by the lat- !erally moving action of the latter to give ja vibrating 'which latter act upon the threat incr yas will be described.

osito ends,

movement to its op m a man- -In threading the machine, the thread. in-

idicat-ed at a, is passed from the spool or =other thread .ordinary disk tension dcvice located upon supply between the disks of an the front side of the machine arm, as most clearly shown in Fig. 10. From this ten` the thread is passed through control r or take-u spring 66, then a controller arm (3H to be ereinafter referred to, then through an eye 69 inthe upper end of the take-up arm, then through an .eye 70 in a stationaxir Iarm 7l which is secured uponthe frame of ,the machine, and vfrom thence down through gan eye 72 near the lower end of the take-np arm, then through a stationary eye or staph` 73on the face-plate, then back through a second eye 74 in the lower end of the takeup arm, and then down through a second stationary eye 75 on the face-plate to llatif,

needle, all asclearly shown in the drawings. In orderto avoid confusion of terms, I will hereafter refer to the laterali stationary eyes 67', 70, 73, and 75,115 gui es, in contradistinction tothe eyes of the movable take-up. When the machine is threaded as described and set in motion, the action of the-take-up is such that its opposite ends move to a position substantially in line with the adjacent guides on the machine arm at a time when the needle is at its highest point and the shuttle is in osition to cast oi' the loop, as shown in g. 5, at which time the greatest amount of thread is renired for passing around the shuttle. ``rom such position, the take-up arm is rocked or operated to move its ends in a lateral direction away from the stationary guides, as shown in Fig. 6, so as to draw up and complete the stitch. After the stitch is drawn up and completed, and the needle has begun its descent as shown in said Fig. 6, the ends of the take-up arm are then moved backward toward the stationary guides so as to ive downvthe necessary slack thread to t e needle when entering the work, as indicated in Fig. 7, and for throwing out the loo to be entered by the shuttle, as shown in ig. 8. From the latter position which shows the eyes in the take-up below the adjacent stationar idee, the ends of the take-up are move in the path of an arc, as indicated in Fig. 9, back to its startin position, as shown in Fig. 5, so as to gra ually give down the necessary thread to the shuttle to be passed around the same in the manner indicated. The action of the take-up in thus moving at its opposite ends in a direction towar and away from the adjacent stationary thread lidcs serves to control the thread in givin own and taking up the same as reuire with great nicety, the movement of tie take-up as given by the -pitman 61 and the arrangement of the guides relative thereto being such as to cause the thread bein drawn up uickly to complete the stitci, and' given down slowl as required without producing undue slacliy.

I will now describe the automatic adjustment of the take-up to conform to the different len ths of stitch.

As wel understood, a greater or less amount of thread is required according to the length of stitch, which latter is regulated by adjusting the horizontal movement of the fee Therefore by adjuetin the lateral throw of the needle-bar, which orme one of the members of my improved feeding mechanism, the lateral movement of the connecting pitman 61 will also'bethereby adjusted and so vary the movement of t ie connected take-up arm` For instance, if the lateral throw of the needle-bar is increased to produce n greater length of "stitch, such increased throw will so change the position 0r angle of the connected pitman and its take-up arm 57 as to cause thc ends. of the latter to move a greater distance from the ad'acent guides when draw-ing oil' the thread rom the spool so as to provide 'the desired increase. If the lateral throwl "of the needle-bar is decreased to provide a shorter stitch, such decrease will of course correspondingly lessen the throw of thcI f take-up and so insure a less uinount ol" thread being drawn from the spool. 'lhc .ends of the take-up arm, in moving back toward the stationary guides2 are always returned to the saine determined position relative thereto, so as to give down thcr pro er amount of thread, by reason of the nee le-bar always returning to the saine starting position, as it is understood that the latera throw of the needle-bar, whether reater or less, is always from the same start ing point. A greater or less amount of thread is also required according to the thickness of the work beine operated upoii. For instance, to. produce the most desirable form of stitch, it is necessary that a suflicicnt length of thread be given down to enahh` the take-up to draw u the loop of the up er thread until the loc c between the thrczuh: is at the center of the work. Hence it fol lows that the length of thread given down at each stitch should be greater or less ac cording as to whether the work is thicker or thinner. As a simple and effective means for thus automatically regulating the length of thread 'ven down at cach stitch, thc said contro er arm 68, through the eye of which the t` -read is passed between the spring G6 and the upper end of the takeup arm 57 as before described, is attached to the end of an arm or extension 42 olV the helper-bar block 42 which projects through a vertically elongated slot 42 in the arm 2 as clearly shown in Figs. 2 and 10. By such arrangement and ,combination of parts, when a piece of work is inserted beneath the helper-bar the thickness of auch work will determine the proper position of the controller" arm by reason of its conncc tion with said helper-bar. Then, in the event of a seam or any other increased thickness in such work .assing beneath thc hel er-bar, the latter wi l be raised thereby an so move the controller upward to rive off enough additional length of thi-ea( to provide for such increased thickness ol' work. After the scam or increased thickness in the work has assed beneath thel helper-bar, the latter o course lowers und so moves the controller back to its original position to ive cti the same amount of thread' as be ore. When the controller is moved upward as described to provide for nn increased thickness in the work, it also acts to relieve the strain on the slack thi-cud loy take-up s ring 66 andinsures the thread bein sufheiently slack inthe'eye of the need e as the latter enters the workto prevent undue strain or breakage ofthe same'.

The eye 67 in the control er'arm'68, although vertically movable as and fpr the purpose set forth, is laterall stationary relative to the adjacent end o the take-up arm 57 in its action toward and away from the same, as hereinbefore referred to.

As a simple means for securing the release of the tension on the u per thread when the work is to be remove I have secured a second arm 76 on the outer end of the helper-bar block extension 42', as shown in Fig. 10, the upper wedge-shaped end of which is adapted to be entered between the disks of the tension device to separate the same and release the thread -when the helper-bar is raised, in a manner as will be described. l'Vhen the helper-bar is in its lowered position resting upon the lower feed member or upon tie work, the connectcd tension release arm 76 is so far below the tension disks'that when the hel er and )resser bars are raised by their lifting device it will not enter between said disks. lVhen the said helper-bar is raised however. by the action of the lever 44 an the machine is brought to a stop at such time, the said tension release arm 7G has been moved by the raising of said bar sufficiently nearer to the tension so'that when the resser and helper bars are now raised by tiieir lifting device, the said arm 76 will be caused to enter between the tension disks and release the thread. The action o f the needle-bar is so timed that it is always above and disengaged from the work when the helper-bar is raised therefrom by the action of the said lever 44.- as described. In this manner, the releasing of the upper thread is only secured when the several parts are in their proper position to permit of the removal of the work, that is', with the needle and helper bars raised, as shown in Figs. 5 and 10. A

The arm or casting 2 is provided with an oil recess or chamber 77 formed therein at a point adjacent to the needle bar bearing block 19, as shown in Fig. 8, in which a suitable wick 78 is located with one end thereof, indicated at 79, projecting laterally over one edge of the oil chamber into contact with the needle-bar so as to automatically lubricate the same. A plat/e or cover 80 closes the top of said chamber, the same being provided with an upturned flange 81 by which it is removably'secured in position by means of a screw 82.

Having thus set forth a ractical embodiment of my invention, I (o not wish to be understood as confining myself to the'particnlnr details of construction and combination of parts as set forth, as the same may be more or less materially modified without departure from the spirit of my invention, for

What I claim and desire to secure by Letters Patent of the United States, is-

-1. In a sewing machine, a combined rclciprocating and vibrating threadcarryingr needle, two feed-members operative to engage and clamp the work therebetween and co erating with said needle to effect the fee of the work while the needle is in the work, and operating means for im )arting work feeding movements to both sai needle and feed-members.

2. In a sewing machine, a combined reciprocating and vibrating thread carrying needle, two feed-members operative to engage and clamp the work therebetween and co erating with said needle to effect the fee of the work while the needle is in the work, operating means for impartin work feeding movements to both said nee le and feed-members, and adjusting means common to both said needle and feed-members for effecting a like adjustment .of feed movement to the same.

3. In a sewing machine, a feeding mechanism comprising a lower feed-member, an up er fee -memtber, a driving shaft, mean:-4 inc uding a device actuated from said shaft for communicating a feeding movement to the feed-members, and means actuated from said device for moving the upper feed-meinber to and from its operative work gripping osition.

4. n a sewing machine, a feeding mechanism corn risin a lower feed-member, an up er fee -mem r, a driving shaft, means inc uding a device actuated from said shaft for communicating a feeding movement to the feed-members, means actuated from said device for moving the upper feed-member to and from its operativo work gripping po` sition, and adjusting means for regulatingY the time of engagement with the work of the u per feed-member.

5. n a sewing machine, a feeding mechanism comprising a lower feed-member, an up er feed-member, means for communicatmg a feeding movement to said feedmembers, a lever for movin said upper feed-member vertically to an from its operative work gripping position relative to the lower feed-member, and adjusting means for regulating the extent of movement of said lever and thereby the time of engagement with the work of the upper feedmember.

6. In a sewing machine, a feeding mechanism comprising a lower feed-member, an upper feed member, means for communieatin a feeding movement to said feedmem ers, arlever having operative conne(-V tion with said upper feed-member to raisiand lower the same, a rock-shaft having an arm engagin with and operating said lever, means for operating said rock-shaft, and ad'nsting means for regulatin the extent o movement of said rock-surft and thereby the throw of the lever operated thereby.

T. In a sewing machine, the combination with the presser-bar, of a feeding mechanism comprising a lower feed-member, an upper feed-member, means for communicatnw a feeding movement. to said feed members, means for exerting a yieldin downward pressure to said presser-bar an the upier feed-member, means for alternately lowering and raising the presser-bar and upper feed-inember to and from engagement. with the work, and adjusting means for regulating the time of engagement with the work of said presser-bar and upper feed member according to the length o stitch.

8. In a sewing machine, the combination, of a feeding mechanism including the needle-bar and needle, a take-up movable relatively to said needle-bar and being operative to draw up and complete the stitch,

means for operating said feeding mechanism and take-up, and a single adjusting means for regulating the action of said feeding mechanism and take-up.

9. In a sewing machine, the combination, of a feeding mechanism including the needle-bar and needle and a coperatin lower feed member a take-u movable re atively to said needle-bar an being operative to draw up and complete the stitch, means for operating said feeding mechanism and take up, and a single adjustin means for regulating the action of said ceding mechanism and take-up.

10. In a sewing machine, the combination, of a feeding mechanism including the nee- Ooplel of this patent may be dle-bar and needle and coperating upper and lower feed members, a take-np movable relatively to said needle-bar and being o erativc to draw up and com ilete the stitcii, means for operating said feeding mechanism and take-up, and a single adjusting means for regulating the action of said feeding mechanism and take-u 11. In a sewing mac iinez the combination, of a feeding mechanism including a coinbined reciprocating and vibrating needlebar, a take-ui movable relatively to said needle-har and with the latter and movable therewith, and means for adjusting the vibrating movement of said needle-bar and thereby thc action of the take-up.

12. In a sewing machine, the combination, with a feeding mechanism including a combined reciprocating and vibratin needlebar, and means for operating the Ilatter including a rotary actuating device and a connecting pitman, of a take-up ri idly connected with said pitinan to be mova le therewith, and means for adjusting the lateral movement of said needle-bar and thereby the action of the take-up.

13. In a sewing machine, a feedin mechanism comprising a lower feed mem er and an up er feed member eo erative to engage and c amp the work there tween, a drivinor shaft, means including a device actuated from said shaft for communicatin a feeding movement to the feedin inem ers, and means actuated from said evice for moving the upper feed member to and from its.l work-clamping position relative to the lower feed member.

'WILLIAM A. MACK. WVitnesses:

Citas. C. EMMoNs, W. C. WALima.

W obtained for ave centr each, by addressing the Commissioner of Patents.

Washington, D. 0.

beiig operatively connected f

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