US1058820A - Ornamental-stitch machine. - Google Patents

Description

J. P. WEIS.

ORNAMENTAL STITCH MACHINE.

APPLICATION FILED JUNE?, 1909.

Patented Apr. 15, 1913.

J'.4 P. WEIS. ORNAMENTAL STITCHl MACHINE.

APPLICATION FILED JUNIN. 1909.

1,058,820. Patented Apr. 15,1913.

4 SHEETS-SHEET 2.

J. P. WBIS.

ORNAMBNTAL STITCH MACHINE.

APPLIUATION FILED JUNE 7, 1909.

Patented Apr. 15, 1913.-

4 SHEETS-SHEET 3.

WlTNESSES:

J. P. WBIS. ORNAMENTAL STITCH MACHINE.

APPLIOATION FILED JUNE 7, 1909.

4 SHEETS-SHEET 4.

WITNESSES: o

Patented Apr. 15, 1913.

UNiTED sTATns PAENT OFFICE.

JOHN P. wErs, or NYACK, New YORK.

ORNAMENTAL-STITC-H MACHINE.

' Specification of Letters Patent'.

Patented Apr. 15, 19113.

Application filed . Tune 7, 1909. Serial No. 500,656.

Among the objects ofmy invention may be noted the following: to provide a simple, cheap and compact construction whereby, in a machine of the type stated, quiet running and positiveness in action are produced; to provide amechanism'carried by the presser-foot of the machine for manipulating a plurality of threads and capable of being quickly detached for changing, substituting, or renewing the parts; to provide a train of mechanism, for actuating the thread-manipulating devices, so arranged as to produce a maximum of speed in the machine with a minimum of wear and vi-v bration; and to provide certain novel, structural features, elements and combinations of elements which will simplify the machine and be capable of attachment tothe wellkno-wn Metropolitan sewing machine.

With the above objects in view, andothers ywhich will beset forth during the course of this description, my invention consists in the parts, features, elements and combinations of elements and mechanisms as hereinafter described and claimed.

In order that my invention may be understood, I have provided drawings wherein:

Figure 1 is a front end elevation of a Metropolitan sewing machine having'y my invention applied thereto; Fig. 2 is a vertical section taken substantially centrally and longitudinally of the presser-footv and the mechanism t-hereabove shown in F i'g. 1, certain of the parts being shown in elevation in order to clearly portray the same; Fig. 3 is a view showing in elevation the two screws vemployed for linking together the guide-bar and wing-shafts of the threadmanipulating devices; Fig. 4 is a top plan of the link referred to above; Fig. 5 is a view showing in elevation and bottom plan the lower end of the tubular shaft for actuating one of the thread-manipulating devices; Fig.` 6 is a view showing 1n elevation and bottom plan the lower end of anotherv of the shafts for actuating another of the thread-manipulating devices; Fig. 7 is a top-plan view of the. presser-foot showing the thread-manipulating devices in one position, the presser-bar and shafts being` shown in section; 8 is a View similar to Fig. 7 showing the thread-manipulating devices in another position; Fig. 9 is a bottomplan view of the presser-foot with 'its bot- .tom slide-plate removed; Fig. 10 is a bottom-plan view of the bottom slide-plate of the presser-foot; Fig.l 11 .is a top-,plan view ofthe top set of thread-manipulating dei vices and actuating-gears; Fig. 12 is a view,

similar to Fig. 11, of the bottom set of thread-manipulating -devices and actuatinggears; Fig. 13 is a view, similar to Fig-7, showing another form' of thread-manipulating-devices in one position; Fig. 14: is a view, similar to Fig. 13, showing the threadmanipulating devices thereof in a different position; Fig. 15 is a view showingin top-plan one of the thread-manipulating devices in two different positions; Fig. 16 is a,4 viewv showing in top-plan the threadmanipulating devices. of Fig. 15 in two other positions; Fig. 17 is a top-plan of a stitch produced by two needle-threads and two thread manipulating devices; Fig. 18 is ,a top-plan of a stitch produced by two needle-threads and one thread-manipulate ing device; and Fig. 19 is a top plan View of a stitch made by two needle-threads andl two thread-manipulating devices.

Referring to the drawings, the numeral 1 indicates the bed-plate of my machine,2 the cloth-plate thereof, 3 the overhanging-arm, which at its forward end, supports the head- `bearings 4a, 4b and 46,' through which the needle-bar 5 reciprocates, and in'wliich the presser-bar 6 and guide-bar 7 operate. The needle-bar, at its lower end, has two needles 8 clamped thereto in usual manner and a1'- ranged side-by-side transversely of the feed, and said needle-bar is actuated by the needlelever 9, having its journal bearing on the end of shaft 10, extending transversely. of the overhanging-arm 3, as usual.

so I

The driving-shaft of the machine is, as usual, journaled in bearings extending vertically from the bed-plate and the forward end of said shaft is provided with thefeedactuating eccentric mechanism, generally indicated by 11, now well known as a part of thev Metropolitan sewing machine, said eccentric, in usual manner, actuating the feed'- rocker 12, journaled at 13 on the bed-plate of the machine. Near its rear end, the driving-shaft is provided with the pinion 14, shown in dotted lines, Fig. 1, which meshes with the gear 15, likewise shown in, Fig. 1, journaled upon a short shaftor stud 16, in the lo-wer portion of the overhanging-arm of the machine. Thesetwo gears 14'and 15 are made removable in any usual manner so that others of different size, or ratio, may be substituted, this being .necessary under certain circumstances andy for the purpose of producing certain ornamental effects, as will be presently explained. vThe gear 15 carries the crank-pin 17, to which is connected the pitman- 18, the upper end of which is likewise connected to the forwardly-extending arm 19 of a bell-crank lever journaled by its extended bearing 2O upon the portion 21 of the shaft 10, upon which the needle-lever 9 is journaled, said shaft being prolongedfor the purpose. Said bell-crank lever is held upon the shaft-portion 21 by the Washer and locking and jam nuts 22; and-the upwardlyextending` arm 23 of said lever carries the ball-stud 24, to which is connected the rear end of the pitman 25, the forward end of which is jointed'to the ball-stud crank-pin f 26, carried by the crank-arm 27, secured to the short shaft 28, j ournaled in the block 29,

secured by means of screws 30 to the top and bottomguide-bar sections 7 and 7a.

The forward end of the 'short shaft 28 is provided with a bevel-gear 31. The upper -end of the top section 7 of t-heguide-bar extends slightlyL above the top ybearing 4` f the machinehead as does .also the vtop portion of the top section 32 of oneiof the shafts which operates the thread-manipulating devices, the botto-m section 32a of said shaft being supported as presentlydescribed. The top section 32, of said shaft and the top section 7, of guide-bar are coupled by the link 34, see Fig. 4, one end of which is provided with the apertures 35, through which extends the body of the 'screw' 36, the upper end of 55 which is enlarged at 37 ,so that the linkmay swivel thereonhthe said screw being tapped into the upper end of the said top section 32 of theshaft. At its other end, the link is provided with the .n elongated fiat-sided, curved-ended slot 38' for the reception of the similarly-formed upper end o f the top section 7 of the guide-bar, into'which is tapped the screw 39. By thus connecting the shaft and bar sections 7 and 32, the gulde-bar section is prevented from having any axial movement, while thev shaft section 32`is permitted to have rotary oscillating movement, as presently described. The lower section '7a of the guide-bar, at its lower end, has clamped thereto the split collar 40, the arms 41 of which are clamped together by the screw 42, this collar having the laterallyprojecting pin 43, extending into the tubular socket 44 of the collar 45 clamped upon the upper end of the presser-bar 6, which, as clearly shown in Fig. 2, is tubular.

The collar 45 is provided with the y'laterally-projecting pin 46, with which coperates the cam-head of the lifting-lever 47, journaled upon the stud 48, carried by the bearing portion 4c of the machine-head.

At its upper end, the presser-bar 6 is dished at 49, to provide a receptacle for oil, which may reach the same through the aperture 50 of the collar 51, clamped by means of the screw 52 upon the lower tubular shaft 53. The upper surface of the collar 51 is likewise dished at 54 for the reception and rctention of oil, the latter running down through the aperture 50 into the dished end 49 of the presser-bar, the latter and the tubular shaft .53 being thus lubricated and the oil being prevented from flying or overrunning The tubular shaft 53, at its upper end, is provided with the bevel-pinion 54X, clamped thereto by means of the screw 55, i

bearing-portions 60, at top and bottom, so

as to journal within thetubular presser-bar.

Extending longitudinally within the tubullar shaft-section 53 is the solid shaft-section 32a,the ends of which are provided with the enlarged bearing portions 61 and 61", the intermediate portion being reduced, s0 as to provide the oil space 62, the said shaft .thus having a journal-bearing within the tubular shaft 53. The upper end 63v of the upper bearing-portion 61 of the shaft-section 32a is extended, as shown by .the dotted lines, into the lower end of the upper shaftsection 32, the connection being made by sweating them together so that the movement imparted to the shaft-section 32, will be imparted to the lower shaft-section 321. This mode of constructing the inner solid shaft, though not absolutely essential, has been found more practical and to facilitate the manufacture of the shaft and assembling of the'mechanisln. The presser-bar, with all its supported parts just described, is under a normal .downwardy pressure through the medium of the usual presser-bar spring 64, the forward end 65 of which is twisted and provided with a V-shaped rib 66, which v enters a. correspondingly formed groove in the concentric shafts are oscillated, the outer one within the presser-bar and the inner one within and upon the shaft 53, in a direction opposite the latter.

` The lower end of the vpresser-bar 6 has secured thereto the shank 68 of the presserfoot 69, the securing means being the socketpla-te 70, which partially embraces the presser-bar and has a'screw 71,-see F ig. 7, passing through each end thereof and f tapped into the shank 68, thus firmly clamping the foot in place upon the bar, the latter being entered in the socket into engagement .with the ledge 72, which determines the position of the foot on said bar. As sho-wn in Figs. 9 and 10, the presser-foot is hollow and provided with gear- seats 73, 74 and 75 in alinement. walls 76 of the foot are provided with a dovetail groove into which is slid thetbottom-plate\77, the edges of which are beveled at 78 to correspond with the grooves in the walls 76 of the foot, said bottom-plate being slid into position until the' shoulders 79 engage the front end of the foot. The connection between the footandbottom-plate is frictional merely and has been found amply sufficient t-o securelyhold the parts together.

`with the overhang 82, having the threadguiding apertures 83`t-herethrough. Likewise, the lfront walllofithe presser-foot is provided with the thread-guiding apertures 84, see Fig..\2, which permit,the entry of the threads to the thread-manipulating de- .vices presently described. 'The top) ofthe .presser-foot is provided with the circular opening 85, through which the needles reciprocate and also through which the operation of the thread-inanlpulatmgdevices-can i be observed. The lower end 61, see Fig. 6,

The bottoms of the two sideguiding aperture 99eXtending longitudinally through one of its teeth andthe gear 98 is provided with the thread aperture ,100' extending longitudinally through one L of its teeth, and the surface of each of these gears is provided withan arrow, the head of which extends toward the front of the.

T he bottom-plate of the foot isf .provided wlth the rearwardly extending tongue 80, over which the loops are formed of the solid portion 32a of the center shaft, is provioded' with a semi-circular extension making a plano-convex projection or key 86, which enters the similarly-formed aperture 87 of the gear 88, which is set in the bottom of the heel of the presser-foot and there held by the said key86.

The lower end 60 of the tubular shaft 53,

-see Fig. 5, is provided with a semi-circular extension providing the arc-shaped key 89, which enters a correspondingly formed aperture 90 of the gear 91, which is set in the heel of the presser-foot above the gear 88, the gear 91 being also provided with the semi-circular .extension 92 of the aperture 90 to permit the passage of the lower end 61 of the shaft 32, the said gear 91 being thus capable of oscillating independently of said shaft 32a under drive from the tubular shaft 53. `The gear 88 meshes with the gear 93 and the gear' 91 meshes with the gear 94, the latter being arranged above the gear 93 and 'both being centered by, and free-to turn upon, or with, the pin 95, journaled in, or secured to, the foot 69, by its reduced end extending into the bearing pro-A vided by an aperture 96 in the foot, adjacent the shank 68. The gear 93 meshes with the gear 97 and the gear 94 meshes with the gear 98, the latter set arranged above the former set in the forward end of the presserfoot, as shown in Fig-2. The gea- rs 98, 94 and 91 being set, respectively,'in the seats 73, 74 and 75 of the presser-foot.

The gear 97 is `provided with the threadfoot `for the purpose of indicating the presence of the said apertures 99l and 100 and .also lfor the purpose of bringing the said apertures into registry with each other and with the arrow, which points in the opposite direction, on 'the top surface of the-foot,`

see Fig. 7, for the initial line up in setting the gears. 1t will thus be seen that the gear 88 is held to and drivenby the solid shaftsecti0n-321, which latter passes through the gear LA91, which latter, in turn, is held to and driven by the tubularl shaft 53, these two gears, respectively, driving their trainsy of gears 94--98 and 93-97. The presserfoot, in addition to having the thread leading-in slots 84 in its front wall, is also provided with the thread-guiding vgrooves 101 land 102, extending inv opposite` directions around substantially half the circumference of the thread-manipulating gears 97 and 98, as shown by dotted linesvin the plan views of Figs.`7 and 8, the said grooves being provided by removingl the material of the foot.

This structure enables two independent thre-ads to be manipulated during the running-of the machine, 'in addition to the needle-threads, said independent threads being .made to crosseach other and be in turn crossed and stitched down by the rey spective needle-threads, as shown, for eX- ample, in Figs. 7, '8 and 17, to produce a line of ornamental stitching on the surface of the fabric, or for seam-covering purposes, if so desired. An alternative convstruction, which omits the use of the inde- 15 pendent threads, `but by means of which the needle-threadsl may` be, manipulated and crossed from side-to-'side ofthe line of .stitching-one or both of said threads,-

is indicated in Figs. 13 and 14, wherein,

aoinstead of using gea-rs such as 97 and 98 with thread-guiding apertures, gears may bel substituted provided,-the top one 103,.-

with a pin or hook 104v and the lower one.

with a similar pin or hoolr 105. In this linstance, the bottom plate 77 of the foot 1s modified to the extent of omitting the i overhang 82, since the same is not required eXcept for the'purpose of guiding independent threads.

` From the foregoing detailed description,

. it will be apparent that, during the operation of the machine, the' needle-bar will be rec-iprocated in usual way carry-ing its two needles, each of' which is provided with a i thread indicated by a and Z), with which will coperate, as is usual in the Metropolitan sewing machine, a single threadcarrying looper.. The fabric is fed through the machine -by any usual feeding mecha- 40 nis1n, a part of which is indicated at 11, 12

and 14, as is also usual in the Metropolitan Sewing machine. The rotation of the driving-shaft will actuate the pinion 14, w-hich, vin turn, will aetuate the gear 15, thus rotating the crank 17 and reciprocating the pitman 18, which will rock the bell-crank lever onthe journal 21, the upper arm of which lever will reciprocate the pitman 25, thus impart-ing, through the crank-arm 27,

a rotary oscillating movement to the gear 31. At its top, this gear cooperates with the pinion 56, fixed to the shaft-section 82, thus imparting to the solidshaft-section 32al a rotary reciprocating 1novement,'which is imparted to the gear' 88, and from it through the gear 93 to the gear 97. Likewise, the gear lnieshes with the pinion 54x, fixed upon the tubular shaft 53 and lmparts thereto ai rotary oscillation, but

the movements of which are the reverse of 94, which drives the gear 98. The result of these operations is that the top gear 98 is moved in onedirect-ion simultaneously with the movement of the bottom gear 97 in the opposite direction, thus carrying the respective threads @and d in opposite directions part way around the opposite needles, and also carrying said' threads across the line of feed and compelling the lines of stitching, formedby the two needles and looper, to stitch down a strand of the threads c and id for every feed movement, in accordance with the stitch or seam shown in Fig. 17. This stitch is produced by the two-to-one gearing 14-15 of Fig. 1, and the thread-guiding or manipulating gears 97-98 of Figsll and 12, a feed-movement taking place for each reciprocation of the needles and for every movement of the manipulating gears, said gears being moved in opposite directions and, consequently, causing their threads to cross each other and be caught, by the needle threads, on opposite sides of the line of seam. This stitch may be used for ornamental purposes only, or may be used to overseam and connect the edges of two pieces of fabric, as shown in Fig. 17, wherein the line al indicates the abutted edges of two pieces of fabric (1F and a3. 1f, however, the two hooks 105, shown in Figs. 18 and 14, are employed in place of the apertures 99 and 100 iu the thread-manipulating gears, the said hooks will engage the needle-threads and carry them from side-to-side, or from one line of stitching to the other, resulting in the seam or ornamental stitch shown in Fig. 19. lf, however, but one line of gear, such as shown in Fig. 12. be employed and the gear 97 be provided with a hook, as shown in Figs.

13 and 14, said hook will manipulate one.

of the needle-threads so as to cross it from side-to--side of the line of seam and carry said needle-thread into the line of stitch of the other needle-thread, thus producing the ornamental stitchA or seam shown` in Fig. 18.

Figs. 15 and 16 are intended to illustrate the` manner in which the two needle-threads a and are engaged and interlooped by the hooks 104 and 105, carried by the gears of Figs. 13 and 14. The successive positions of said hooks are shown in the several positions of thread manipulation designated as a2, :121, m2 and m3 in Figs. 15 and 16. In these figures position a: is the beginning of the cycle of stitch-formation, and in the first position the needles have descended, the needle-loops have been caught by the looper, as usual, the needles have risen, a feed-movement has taken place, which carries the two needlethreads forward in the line of feed, and the hooks 104 and 105 have engaged the respective needle-threads, thus carried forward preparatory to carrying them around to position m1.' While the needles are finishing their upward movement and are descending a second time, the hooks carry the needlethreads from position x1 to, and past, position x2 into position m3, where the needles pass through the loops thus produced, said loops being' held by the needle-thread as the next stitch is formed. This operation will produce the stitch of Fig. 19, the gears 14 and 15 being proportioned as 1 to 1.

The stitch of Fig. 18y is produced by two needles and complemental stitchforming mechanism, and a single hook for manipulating one of the needle-threads, the ratio betweenthe gears 14-15 being 1 to 1. By inclosing the thread manipulating devices and their actuatinggears in the hollow presser-foot and providing the latter with a removable bottom, the said gears and de vices may be removed at any time for any purpose, as for example, for substituting one device for another, for repairing, or cleaning, and by making the boot-bottom remo-vable, other forms may be substituted for the one shown.

Having thus described my invention, whatv l claim and desire to secure by Letters Patent is:

1. An ornamental stitch machine having, in combination, stitch-forming mechanism including a plurality of needles and complemental means for forming the stitch; and means for manipulating ornamental threads comprising a plurality of concentric devices for carrying the threads transversely of the line of stitch, means for actuating said device including a shaft supported in the head of the machine, means for oscillating the sha ft including' a gear and a bell-crank lever, means for connecting the gear and lever for actuating the lat-ter, and means connecting the lever and shaft for actuating the latter.

2. An ornamental stitch machine having, in combination, stitch-forming mechanism a presser-foot; a device supported by the presser-foot for carrying an ornament-al thread transversely of the line of seam; and

'- means for actuating said device comprising a driving-shaft arranged below the workplate of the machine, a bell-crank lever arranged above the said work-plate, means connecting the shaft and lever for actuating the latter, a rotary reciprocating shaft arranged at an angle to the driving-shaft, means for connecting the lever with the sec-l ond named shaft for actuating the latter,

and means connecting the second named shaft with the said device for actuating the latter. y

3. An ornamental stitch machine having,

in combination, stitch-forming mechanism;

a device for carrying a thread transversely of the line of seam; a presser-foot mechain combination, stitch-formin nism including a presser-bar; means for supporting said device on the presser-foot mech-. anism; means for actuating saidl device 'including a rotary driving-shaft and a shaft extending concentrically with the presserbarl of the presser-foot mechanism; and means between the two shafts for transforming the rotary motion of the Idriving-shaft into rotary reciprocating motion in the other shaft, including differential gearing.

4. An ornamental stitch machine having, in combination, a stitch-forming mechanism; a presser-bar carrying a presser-foot; a thread manipulating device, the threadmanipulating device being supported by the presser-foot; means for actuating said device comprising a shaft concentric with the presser-bar; rotary oscillating gear for actuating said shaft; and dilferential gearing connecting said shaft with said device.

5. An ornamental stitch machine having, in combination, stitch-forming mechanism; presser-foot mechanism; a thread-manipulating device; the presser-foot mechanism including a hollow presser-foot and a hollow presser-bar; and means for actuating the said device including a driven shaft carried by the hollow presser-bar, gearing carried 1n the hollow presser-foot coperating with said shaft, and means for actuating the driven shaft.

6. An ornamental stitch machine comprising a stitch-forming mechanism; presserfoot mechanism; and a thread-manipulating device; the presser-foot mechanism including a hollow presser-foot; means for actuatin the said device including differential gearing supported within the hollow presser-I foot; a shaft concentric with the presser-` bar for .driving said gearing; and means for giving the said shaft rotary reciprocating movements.

7. An ornamental stitch machine having, in combination, stitch-forming mechanism; presserfoot mechanism; and a threadmanipulating device; the presser-foot mechanism inclu ing a hollow presser-foot having a removable bottom; and means for actuating the said device including gear supported in said hollow presser-foot and held in place by said removable presser-foot bottom, whereby the gear f or the said device and also the latter may be quickly removed for any purpose..

8. An ornamental stitch machine having, mechanism; a plurality of thread-manipu ating devices comprising a-plurality of superposed gears, a plurality of Aconcentric shafts, and means saidgears and the said devices.

9. An ornamental stitch machine having,

in combination, stitch-forming mechanism iand thread-manipulating devices; means for In testimony whereof I have hereunto actuating said thread-manipulating devices signed my name in the presence of tvvo subcomprising a plurality of concentric shafts; scribing witnesses.

gears carried by the several shafts; and a JOHN P. WEIS. Vsingle drivinggear coperating with the Witnesses:

gears on said shafts to impart motion thereto OSCAR DEvoE,

simultaneously in opposite directions. A. BENDER.

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