US703960A - Cutting attachment for sewing-machines. - Google Patents

Description

Paftented IuIy I, |902.

G. S. HILL, CUTTING ATTAUHMENTVFOR SEWING MACHINES.

(Application led Jan. 19, 1899.)

5 Sheets-Sheet l.

(No Model.)

III

v4.5 Vi/pauw lTME Norms PETERS co., PNQYCLLWNLL wxsnmuon. n. c.

No. 703,960. Patented luly I, |902.

G. S. HILL.

CUTTING ATTACHMENT FOR SEWING MACHINES.

(Application led Jan. 19, 1899.) (No Model.) 5 Sheets-Shui 2 WWA/55555: /Nv 15A/TDR:

. @www2 No. 703,960l Patented luly I, |902. G. S. HILL.

CUTTING ATTACHMENT FUR SEWING MACHINES.

(Application filed Jan. 19, 1899.!

(No Model.) 5 Sheets-Sheet 3` Norms PETERS co., Pxofounu. wunmmn. o. c.

No. 703,960. Patented my l, |902.

Y G; S. HILL.

CUTTING ATTACHMENT FUR SEWING MACHINES.

(Application led Jan. 19, 1899.) (No Model.) 5 Sheets-Sheet 4.

@wa/Wm y s Noms Pneus co.. Fnuouwo.. yusnlnpwn. n. c.

No.. 703,960 Patented luly l, |902.

, G. s. HILL.

CUTTING ATTACHMENT FDR SEWING MACHINES.

(Application filed Jan. 19, 1899. 4 (No`M0del.) 5 Shady-Sheet 5.

UNITED STATES PA-TENT- OFFICE.

GEORGE S. HILL, OF HAVERHILL, MASSACHUSETTS,VASSIGNOR, BY MESNE ASSIGNMENTS, TO THE SINGER `MNUFAOTURING COMPANY, A OOR- PORATION OF N'EV JERSEY.

CUTTING` ATTACHMENTFOR SEWING-MACHINES.

SPECIFICATION forming part f Petterslatent No. 703,960, dated July 1, 1902. Application filed January 19, 1899. Serial No. 702,629. (No model.)

of Massachusetts, have invented certain new and useful Improvements inCu'tting Attachments for Sewing-Machines, of which the fol-y lowing is a specification.

This invention has lrelation to that class of machines for forming a series of groups of stitches, such as cross-bars, the said class of machines being exemplified by my Patent No. 518,877, datedvOctober 29, 1895, to which reference is to be had for the understanding of the main features of the machine hereinafter described. Y

The objects of the invention are to provide for the automatic cutting of the upper and under threads of the stitch-forming mechanism at points beneath the work, to provide for the loosening' 'and drawing out of the threads prior to said cutting in order that they may properlyinterlock when the operation of sewing the next cross-bar is begun, to'

provide for the actuating of the cutting devices by automatically-operating`means, to provide for the automatic locking of the upper thread during and afterthe cuttingof the same and for the withdrawal of its severed end after it has been cut,'and toprovide for the locking of the cutting, loosening, and clamping mechanism out ofthe way when the needle is being actuated to sew the cross-bars.

To these ends the invention consists of the improvements which I shall now proceed to describe in detail and then point out in the claims hereto annexed.

Reference is to be had to the accompanying drawings, and to the letters and iigures marked thereon, forming a part of this speciication, similar characters indicating similar parts or features, as the case Vmay be, wherever they occur. Y

Of the drawings, Figure 1 is a side elevation of a sewing-machine with the casing removed, equipped with my improvements. Fig. 2 is a front end elevation of the same, showing the parts in their respective positions just after the threads have been cut and the operation of sewing the cross-bar has been devices for loosening the upper thread.

completed. Fig. 3 is a similar view illustrating the, positions of the respective parts immediately prior to the operation of cutting thethreads.V Fig. 4 is an elevation from the rearendwhen the parts are in their respective positions shown in Fig. 2. Fig. 5 is a vertical sectiou on the line 5 5 of Fig. 1 with the parts in their respective positions illustrated in Fig. 4. Fig. 6 is a similar section on the said-line, but illustrating the parts in the positions they assume prior to the cutting of the threads. Fig. 7 is a bottom view of the machine looking from beneath. Fig. 8 shows the position of the cutting-blade prior to the cutting of the threads. Fig. 9shows the's'ame immediately after the Linder thread has been cut. Fig. 10 also shows the same after both threads have been cut. Figs.` 1l and'12 illustrate the adjustable cam and the pulleys on the needle-bar-driving shaft. Fig. 12L represents a section on the line 12fL 12, Fig. 11. Fig. 13 is an enlarged section of the Fig. 14 illustrates the hand-operative device and its cooperating and adjacent parts for bringing ythe cutting devices into operation. Figs. 15 and 16 illustrate in enlarged views the mechanism for loosening or drawing out the underthread prior to its being severed. Fig. 17 shows the device for locking the upper thread to the needle-bar. Figs. 18 and 19 illustrate the loosening mechanism for the upper thread. Fig. 20 is a perspective View of the stationary and the movable blades for severing the threads.

My invention, as has been hereinbefore stated, is especially applicable to that class of machines typified by my Patent No. 548,877,

dated October 29, 1895, and as many of the main parts of the machine shown in the accompanying drawings are illustrated and described therein I vshall not attempt to again describe them, as a perfect understanding thereof may be gained from the said patent.

The machine is providedwith a bed-plate a, upon which are mounted the supports and bearings for the operative parts thereof, those movable parts beneath the plate being inclosed within a casing, as partially illustrated in Figs. 2, 3, and 6. The plate is hinged toV the casing at the back by pintles b, extending through lugs c thereon.

dis the continuously-rotatingdriving-shaft, which is mounted in bearings at the back of the plate, substantially in alinement with the pintles b, so that the bed-plate may be swung up to expose the operative parts on the under side thereof without removing the -driving-belt from the pulley e on the driving-shaft. Power may be imparted to the belt for rotating the pulley in any suitable way.

On the needle-bar-driving shaft f, Fig. 1l, are mounted a loose pulley b and a fast pulley c, with either of which a belt extending from a pulleyg on the driving-shaft may engage, being shifted from one to the other by a belt-shifter h, the operation of which will be hereinafter described.

On the end of the standard is mounted a vertically-reciprocating needle-bar operated by suitable mechanism interposed between it and the driving-shaftf and coacting with a thread-carrying looper or shuttle beneath the bed-plate for interlocking the threads through a fabric; but as these parts are not of the present invention I shall not describe them.

The upper needle, with the devices that operate it, I term the upper-thread mechanism, and the looper, the shuttle, the under needle, or other form of device for the under thread, with its driving or operating devices, I term the underethread mechanism, and I term the thread 5, carried by the upper-thread mechanism, either the needle-thread or the upper thread, while I term the other thread L the under thread or the looper-thread.

Mounted in bearings on the under side of the bed-plate is a longitudinal rock-shaft 1l, by means of which power is imparted to the devices which I shall now describe for drawing out and loosening the upper and the under threads, cutting the latter at the proper time, and then freeing the severed end of thel upper thread. Y

The shaft t' is provided with a collar j, rigid thereon, to which a levera is hinged by a vertical pivot. The free end of the lever is provided with an antifriction-roller Z, which is adapted to be moved into and out of engagement with a cam m on a stud-shaft n. The driving-shaft CZ is provided with a pinion o, engaging and driving a gear-wheel p on the shaft n, so that the cam mis continuously revolved. For engaging and disengaging the the lower end of a bar t and engaging a pin l u thereon. The bar is adapted to reciprocate through an externally-threaded sleeve fu, vertically adjustable in a lug w, extending from the side of the standard, and in a guide also extending out froml the side of the standard. The bar is provided with a clip y, between which and the adjustable sleeve and around the bar is placed a coiled tensionspring e'. The tension of the spring is adjusted or varied by adjusting the threaded sleeve@ in its internally-threaded supportinglug. The upper end of the bar t is adapted to press against a cam ct' on the shaftfand secured to the fixed pulley c. The cam is provided withacurvilinear slot through which extends a bolt d', having its end secured to a plate e', fastened to the fixed pulley by screws, so that the cam may be adjusted relatively to the ixed wheel and secured in the desired'adjustment by a nut f' on the bolt d. The face of the fixed pulley opposite to the cam is provided with a groove through which the bolt d extends, and in the said groove and on either side of the bolt I place cushioning springs g', the plate e having slots through which its fastening-screws pass to permit of a slight movement of the fixed pulleyin either direction relatively to the cam. The cam is provided with a recess 7L', into which the end of the bar t may enter to stop the rotation of the necdle-bar-drivijng shaft f. It will be 0bserved that the cam is provided with three dwells 1, 2, and 3, those at 1 and 2 being separated by a relatively steep shoulder and those at 2 and 3 being separated by a slight shoulder. notch 7L', and the dwell at 2 is practically a semicircle.

The belt-shifter 71., which I have hereinbefore referred to, is mounted on the end of a support 7l', extending out from the standard, and is provided with an arm having a curved slot j', into which extends a pin it from the bar t. When the bar is at its lowest point, the belt will be on the fast pulley; but as it rises the belt will be shifted to the loose pulley, as will be clearly understood. The bar is normally locked against movement and held away from engagement with the cam by means lof the following devices:

Z is an arm extending inward from the rockshaft t and pivoted at its end to one of a pair of toggle-levers m. When the levers fm are in the position illustrated in Fig. 6, the bart is held away from the cam at', and when they are at an angle to each other, as shown in Fig. 5, the tension of the spring z will force the end of the bar up into engagement with the cam. A spring n and a Weight on the end of the arm Z tend to hold the toggle-levers in their locked position. When it is desired to lock the toggles, the key or push-button r is depressed and the roller Zis moved into engagement with the continuously-revolvin g cam m. The latter depresses the lever 7c, andthereby The dwells l and 3 are separated by the IIO rocks the shaft, draws down the arm s far enoughv to free the end of the rod t from the notch Zt', and then to move the belt-shifter to cause it to throw the belt on the fast pulley c. The spring n and the weight on the end of the arm Z assist the cam min throwing the toggle-levers into their locked position. For unlocking them an automatically-acting device is provided, consisting of a wiper s2, mounted on a horizontally -revolving eamdisk t2, keyed on a shaft u2, which is geared by wheels (not shown) with the needle-bardriving shaftf. The parts are so timed during the forming of the last stitch that the wiper will engage one of the toggle-levers m, throwing the latter out of their locked positions, thus allowing the shaft t' to rock and the bar t to become again engaged with the cam a.

I shall now proceed to describe the devices for drawing out and loosening the under thread and the upper thread and the means for severing them beneath the bed-plate.

o is the lower clamp, suitably mounted above the throat-plate to extend beneath the needle, and has pivoted to its outer end an elbow-lever p. To the upper end of the short arm of the said lever p Isecure an upper clamp q', between the end of which and the lower clamp 0 the work may be firmly held to be guided to the needle. A fiat curved spring r tends to hold the clamp-plate q in its raised position, as illustrated in Fig. 2.

s' is a kickerpivoted to the forward part of the standard and is provided with a bent finger t', which extends into engagement with the needle-thread, so as to draw the severed end thereof out of the fabric. It is reciprocated by a link u', rigidly secured to the top of the short vertical arm of the lever p'.

n' is a pin having a head and passed through an eye w in the end of the long arm of the lever p and being adapted to slightly reciprocate vertically in guide under the bedplate.`

y is one of a pair of toggle-levers which is pivoted at one end to the guide fr and at the other end to the other toggle-lever z. last said lever e" is pivoted in the end of the vertically-movable pin o and is provided with a laterally-extending arm a2. The spring r tends to normally hold the upper clamp q raised and the pin t in its uppermost position; but when the toggle-levers are straightened, as illustrated in Fig. 3, the pin fu/ is drawn down and the clamp-plate q' is forced to its clamping position. The toggle-lever z is provided with another arm b2, by means of which the levers may be moved from their locked positions. To move the levers into and out of theirl locked positions,I adjustably secure an arm c2 by a set-screw G51 rigidly to the rock-shaft t' (thus constituting an automaticallyoperative device) and provide it with an antifriction-roller CZ2, which is adapted to strike and bear against the arms a2 and b2, respectively, as it is being reciprocated.

ThisA Vhen the toggle-levers m', before referred to, are unlocked and the rock-shaft z' is being rocked up, the arm c2 will move the greater portion of its throw before it strikes the arm b2 of the toggle-lever z' to release the togglelevers y and z from their locked position, and the spring r' will then draw up the pin t and raisethe upper clamp q.

Pivoted on the shuttle-box is aleverf2, having a'pull-off g2, which is adapted to engage the under thread prior to its being severed and draw out a sufficient length of it for the forming of a first stitch at the beginning of the next operation. The lever f2 is provided with a slot h2 of the shape shown in Figs. l5 and l6-that is to say, the slot is divided into three portions, the two outer portions being vertical and connected by the inclined middle portion. The pin 2 extends from the arm c2 into the said slot.

The device for cutting the threads is located beneath the work and the bed-plate. It consists of a stationary platej2 with a rigid ledgerplate k2 and a plate Z2, movable in guides m2 m2 underneath the bed-plate, and havinga blade n2, provided with two cutting edges o2 and p2, separated by a shoulder, the first being for the upper thread and the other for the under thread. The edges of the blades Wand 7a2 are at an oblique angle to each other, so that when the plate Z2 is moved the blades 02 and 7a2 will first sever the upperthread and after a predetermined period of time sever the under thread. The plate Z2 is reciprocated by means of an arm q2, secured adjustably on the rock-shaft t' by a set-screw Q51 andv having in its end a pin extending into an eye r2 on the under side of the plate Z2.

I shall now describe the devices for locking the upper thread to insure that the kicker s',

`before described, shall draw out of the fabric the severed end thereof.

U2 is a horizontal rock-shaft extending from the standard belowr the gooseneck to the forward part thereof. Its rear end is provided with an arm 102, by means of which it is given a slight rocking motion as the bar t enters the notch h in the cam a. To the end of the arm 102 is pivoted a link 002, having vat its ICO IIO

lower end a slot 't1/2, into which extends a pin z2 from the arm Z', before described as being rigidly secured to the rock-shaft t'. At its forward lend the rock-shaft t2 is provided with a wedging or locking lever a2. The parts are so timed that the needle-bar is in its uppermost position when the wedging-lever a3 is rocking forward. The needle-bar is provided with a head c3, secured thereto by a set-screw CZ3. (See Fig. 17.) `The said head c2 is provided near its edge with a slot e3,.through which the upper thread passes', so that when the wedging-lever a3 is rocked forward it presses against the spring-strip f2 in the head formed by the slot e3 and tightly Wedges or locks the thread in the slot. The thread passes from the spool g2, through the guide h3, under a spring-held friction-plate 3, through vout-friction.

the eye'j, from thence through a slotted guide k3, upto and through an aperture in the end of the take-up Z3, down to a guide m3, through the said slot e3, to and through the eye of the needle. The rock-shaft c2 is utilized todoperate a thread pull-off n3, as well as to loosen the friction-plate is. also mounted on the end of the rock-shaft u2 and plays in the slotted guide 7c3.

tion-plate i3 is loosened. An arm o3 is mounted on the rock-shaft and is arranged to press" out a pin p3 when the shaft 'u2 is rocked to thrust out the friction-disk 3 and release it from engagement with the thread,- so that the latter may be drawn from the spool with- The friction-disk l3 is mounted on a stud g3, and the pressure of` the spring r3 thereagainst is regulated by a nut s3. The arm c2 is adjustably secured upon the shaft i by the set-screw C51, whereby the movements of the kicker, the clamp, 'and the pull-off g2 may be varied, as desired, the Varm g2 being likewise adjustable on said shaft `by the set- 'screw Q51 to vary the movements of the knife the clamps qand o.

or cutter.

Having thus described the various parts of my improvements, I will now proceed to set' forth the operation of the same.

Let it be supposed that one operatonof sewing a cross-barhas been entirely completed and the work has been removed from The parts are then in the positions illustrated in Figs. l', 2, 4, 5, andv 10. The work is placed between the clamps o and q', and the push-button or key r is depressed. This throws the roller? laterally under the cam fm., and the rock-shaft 1l as the cam revolves draws down upon the bar t to free it from the camc, and the toggle-levers 'm' mlock it in its lowermost position. illustrated in Figs. 3, 6, 8, and lf3- that is to say, when the bar twas depressed it oper-X ated the belt-shifter to lthrow the belt from the loose pulley to the fast-pulley, so that the needle-bar-driving shaft j" is being vro'- tated. The shaft f-then operates the needle-v` bar and the shuttle by means not described, and also begins to rotate the shaft u2 and the wiper-cam t2. While the bar t is held by the toggle-levers fm away from the cam d the needle and the shuttle are actuated until thewiper s2 on the-cam 't2 strikes against one of' the toggle-levers m and throws them from their locked position. The parts are so timed that as the rock-shaft is unlocked the bar t comes under the tension of the spring ,e just as the cam a' presents the edge of the dwell 3 next to the notch 7L' thereto. Then as the The thread pull-off n3 isy l To-pro-l vide for this pulling off the thread, the fric# The parts are then in the positions 2 in the lower vertical portion of the slot h2' without affecting the under thread pull-off g2;

- but as the rock-shaft 0I traverses the second part of its movement the arm c2 in rising car-y ries the pin through the intermediate p0rtionof the slot h2 of the lever f2. This moves the pull-off g2 forward (see Figs. l5 and 16,)

so that the end thereof engages the shuttlethread 4 and draws out enough thread from the shuttle so that after the thread is severed there will be sufficient for the beginning of the stitch at the next operation. Just as the pull-off has completed drawing out the thread the rock-shaft t will have caused the arm q2 to draw the slide Z2 back far enough for the edge o2 to coperate with the blade 7a2 in severing the upper th-read 5.' (See Figs. 8

and 9.) At this time the under thread 4 will not be cut, as it is resting against the edge 192 of the blade n2. The rock-shaft i, continuing in its movement, causes the arm l torock the rock-shaft r2 through the medium of the link x2 and the arm wg. This causes the pull-off n.3 to be moved down through the guides 7c3, the friction-disk 3 having been just thrown into the position shown in Fig. 13 to allow the thread to slip easily by for this purliiose, and practically simultaneously therewith theroller d2 on the arm c? strikes vthe arm b2 of the toggle-lever a and -allows the pin /u to rise. The spring r in rocking the lever p swings the kicker s on its pivot through the medium of the rigid link u, so that the finger t engages the upper thread and draws the severed end thereof out of the fabric for the beginning of a stitch at the next operation. y At the same time or at a period of time slightly thereafter the arm q2 draws the plate far enough to the rear for the edge p2 of the blade n2, with `the aid the upperclamp q' has been raised by the lever p', so that the work may now be taken 'from the machine.

The partshave to be all accurately timed and correlated in order that they may perform their functions at precisely the proper time and iu the proper sequence. As the cam ct' completes its revolution for the final movements of the parts which cause the severing of the thread the end of the bar tenters the notch h/ in the cam a and locks the needlebar in its raised position, as well as locking all the other operative parts of the machine, with the exception of the continuously-moving driving-shaft, the gear-wheels, and the cam fm. The adjustment of the cama relatively to the fixed pulley c permits of the parts being timed a little differently relatively to the movements of the needle-bardriving shaftf, and the cushioning devices inserted between the cam a' and the fixed pulley c' provide against any injurious shock to the machine by thepsudden stopping of the cam va in its revolution.

IOO

IIO

When the operator places new' work between the clamps o and q', the key or pushbutton r is pressed down to move the roller Z" on the lever it laterally into engagement with the continuously-operating cam m. As

vthe cam revolves it rocks the 'lever down to its lowest position, and as the rock-shaft is thus being rocked down the rock-shaft r2 is lirst actuated by the weight of the link m2 to allow the friction-disk '113 to slide back into engagement with the thread and the upperarm czis rocked down so as to swing the under thread pull-off g2 back ont of the way, so as to release the under thread. As the end of the lever c2 descends the roller d2 strikes against the arm a2 of the toggle-lever a', which throws the toggle-levers into their locked position and draws down the pin fr'. As the pin is drawn down it draws with it the horizontal arm of the lever p, so as to bring the upper clamp q down rmly against the work. The movement of the lever p/ likewise draws the kicker s and the finger t back away from the needle. Then as the rock-shaft and the arm l thereon reach the lowest limits of their movements the toggle-levers m/ m slip into their locked position. In doing this the said levers positively lock the rock-shaft'i against move. ment, and thereby prevent any movement whatsoever of all of the operative parts of the machine except those which are actuated by the fast pulley c or the needle-bar-driving shaft.

It will be understood that all the operations of the dierent parts which are effected by the rock-shaft i occur while the needle-bardriving shaftf is making one revolution and the needle is moving down and up once. There is practically but small movement of the rock-shaft t' from the time when the end of the bar t moves into engagement with the cam until the latter has nearly completed its revolution-that is to say, the rock-shaft receives its first positive movement when the end of the barpasses down the shoulder from the dwell 2 to the dwell l, the dwell l being eccentric tothe axis of the shaft f, so that practically the greater part of the movements of the operative devices occur during the last quarter of the revolution of the cam d.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without having attempted to set forth all of the forms in which it may be made or all of the modes of its use, I declare that what I claim is l. In a sewing-machine, stitch-forming devices, comprising an upper-thread mechanism, and an under-thread mechanism, a stationary blade, a movable blade, said blades being located under the work, and being adapted tov cut both the upper and the under threads, and means for automatically actuating said movable blade to cut said threads immediately upon the completion of a stitching operation,whereby said work may be removed from the machine.

2. In combination with a two-thread sewing-machine, a stationary blade located below the work, a movable blade having two cutting edges, (one for the upper thread and the other for the under thread,) and means for actuating the movable blade.

3. In a sewing-machine, stitch-forming devices comprising upper-thread mechanism and under-thread mechanism, a cutting device for severingthe underthread,and means for drawing out the under thread to leave an end of sufficient length for the next stitch.

4. In a sewing-machine, an upper-thread mechanism, an under-thread mechanism, a cutting device for severing the under thread, and a pivoted pull-off for drawing out the under thread whereby it will be sufficiently long for the next stitch.

5. In a sewing-machine, an upper-thread mechanism an under-thread mechanism, a cutting device for severing the under thread, a pull-off for the under thread, and means for actuating the cutting device and the pull-off.

6. In asewing-machine,upper-thread mechanism, under-thread mechanism, a cutting device for severing the under thread, and a pull-0E movable relatively to the cutting device for drawing out the under thread.

'7. In asewing-machine,upperthread mechanism, under-thread mechanism, a cutting device for severing the under thread, and a pull-off independent of said cutting devices for drawing out said under thread to provide a loose end of sufficient length for the next stitch.

8. A sewing-machine, comprising underthread mechanism, a pull-off for drawing out the under thread, a cutting device for severing the thread, means for actuating both the pull-ott and the cutting device, and means for locking the first said means to hold the said pull-off in an inoperative position.

9. A sewing-machine, comprising an underthread mechanism, a pull-OEE for drawing out the thread, a cutting device for severing the under thread, means for actuating both the pull-o and the cutting device, and mechanism comprising toggle-levers for intermittingly locking said means against movement.

l0. In a sewing-machine, the combination with a stitch-forming mechanism, including an upper needle and its bar, of a device for severing the needle-thread located below the work, and an automatic device for engaging said thread between the needle-eye and the IOO IIO

work and drawing the severed end of said thread out of the work without moving said work.

11. In a sewing-machine, the combination with a stitch-forming mechanism, including an upper needle and its bar, of a device for severing the needlethread, an automatic kicker for drawing the severed end of the thread out of the work, and means for maintaining said kicker inoperative during the operation of the stitch-forming mechanism.

12. In a sewing-machine, the combination with a stitch-forming mechanism, of a device located below the work for severing the thread, a kicker for drawingr out the severed end of the thread, and means'including toggle-levers for holding said kicker in a nonoperative position.

13. In a sewing-machine, the combination with a stitch-forming mechanism, of a device located below the work for severing the needle-thread, a kicker for drawing out the severed end of the thread, means including toggle-levers for holding said kicker in a nonoperative position, and an automatically-acting device for unlocking said toggle-levers.

14. In a sewing-machine, the combination ot' the lower clamp, a pivoted lever, an upper clamp secured thereto,'a kicker for the thread pivoted to the standard, a link connecting the lever with the kicker, a spring for raising the lever up so as to move the upper clamp away from the lower clamp and the kicker into its operative position, and togglelevers for locking said lever down with the upper clamp against the lower clamp and the kicker in an inoperative position.

15. In a two-thread sewing-machine, the combination with a stitch-forming mechanism, of a cutting device for the threads, a lever for drawing out the under thread prior to its -being severed, and means for varying the movements of the said device and the said lever.

16. A sewing-machine comprising a driving-shaft for the stitch-,forming mechanism, a cutting device for severing the thread, a movable bar connected mediately with the said device for operating it; and a cam on the said shaft, against which the bar is adapted to press, said cam being adjustable relatively to said shaft.

1 7. A sewing-machine including a continuously-rotating shaft, a driving-shaft for the stitch forming mechanism, belt shifting mechanism, a device for cutting the thread, a device for drawing out the severed end of said thread, means for operating the belt'- shifting mechanism and both said devices and mechanism including a han d-operated key for connecting saidv means with said continuously-rotating shaft.

In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE S. HILL.

Vitnesses:

HENRY J. MILLER, HARROLD W. BROWN.

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