USRE9962E - Button-hole sewing-machine - Google Patents

Description

5 Sheets-Sheet 1 F. SIMMONS,

1 Assignor w the UNITED STATES AUTOMATIC BUTTON HOLE SEWING MAcHiNE COMPANY.

BUTTON HOLE SEWING MACHINE. No. 9,962. Reissued Dec. 6,1881.

J JN ILV'W W M 5 SheetsSheet 2.

P. SIMMONS;

Assignor to the UNITED STATES AUTOMATIC BUTTON HOLE SEWING MACHINE COMPANY.

BUTTON HOLE SEWING MACHINE. I

Y i 5 sile'etv-shevet P; SIMMONS, J Asignor to the UNITED SiAi E S JAIUTOMMEIBUTTOE HOLE Sizwme MACHINE CbMPQNY. BUTTON HOLE SEWING MACHINE. No. 9,962! Reissued Dec. (21:881.

5 Sheets8heet 4.

F. SIMMONS,

Assignor to the UNITED STATES AUTOMATIC BUTTON HOLE SEWING MACHINE COMPANY.

. BU TTON HOLE SEWINGMAGHINE.

Reisued Dec; 6,1881

5 Sheets-Sheet 5.

F. SIMMONS,

Assignor to the UNITED STATES AUTOMATIC Bu'r'ron HOLE SEWING MACHINE COMPANY.-

BUTTON HOLE SEWING MACHINE.

No. 9,962. Eeissued Dec. 6.11881 UNITED STATES FREDERICK SIMMONS, OF

PATENT OFFICE.

\VEBBER STREET, BLACKFRIARS ROAD, COUNTY OF SURREY, ENGLAND, ASSIGNOR TO THE UNITED STATES AUTOMATIU BUTTON HOLE SEWING MACHINE COMPANY, OF. NEW JERSEY.

BUTTON-HOLE SEWING-MACHINE.

SPECIFICATION forming part of Reissued Letters Patent No. 9,962, dated December 6, 1881,

1 Original No. 216,902, dated June 24, 1879. Application for reissue filed July '23, 1881.

To all whom it may concern:

Be it known that I, FREDERICK SIMMONS,

a. subject of the Queen of Great Britain and Ireland, and a resident of \Vebber Street,

Blackfriars Road, in the county of Surrey,

England, have invented certain Improvements in Button-Hole Sewing-Machines, of which the following isa specification.

This invention has for its object the rapid and effective stitching of button-holes by antomatic mechanism.

The main characteristic of that class of machines to which my invention relates lies in the cloth-clamp and the means for imparting thereto certain movements in a horizontal plane with reference to the vertically-recipro' cating needle, one of these motions being an intermittent reciprocating movement at right; angles to the length of the button'hole, and serving to so place the cloth beneath the needle that the latter will alternately enterit near one edge of the line of the button-hole and pass through the line of the button-hole in order to form the overseam. When the ends of the button-hole are being formed this laterally-reciprocating movement of the cloth. clamps is continued in the same direction, but of about twice the extent of the movem ent first described, in order to form the bar which 0 strengthens the ends of the button-hole. An

intermittent or step-by-step feed motion is imparted tothe cloth-clamps at right angles to those described, continuing in one direction about the length of the button-hole, and then 5 taking the reverse direction, the alternately reverse motions being on slightly separated but parallel lines, so that the cloth is fed under the'needle so as to form thetwo edges and ends of the button-hole.

My invention consists more particularly of improvements in the devices for operating and controlling the cloth-clamps, as more fully described hereinafter.

Figure 1 is a plan view of asewing-inachine provided with my improvement. Fig. 2 is a front side elevation of the machine with its hand-wheel and the cams for operating and stitching mechanism removed. Fig. 3 is a sec tion on line a: as of Fig. 1. Fig. 4 is a front end elevation of the machine. Fig. 5 isarear side view of the cloth-clamp and its immediate connections. Fig. 6is atop 'view of same. Fig. 7 is a view in detail of the connections between the devices for giving the overseamforming movements. Fig. .8 is a detail view of the sliding cam, which will be hereinafter referred to. Fig. 9 illustrates the needle and shuttle-arm operating cams of the machine to which'my improvement is attached. Fig. 10

is a detached view of the cam-shaft of my imp'rovement, showing a diametric section of the feed-wheel. Fig. 11 is a view at right angles to Fig. 10. Fig. 12 is a detached view of the cam-grooved wheel, which imparts a rocking motion to the sliding cam shown in Fig. 8. Fig. 13 shows detached views of the arm which communicates motion to the feed-shaft. Fig.

14 is a section on line yy, Fig. 10, showingthe internal construction of the feed-wheel.

The letter Z indicates the goose-neck of a sewing-machine, Z the needle-operating lever, and Z the vertically-reciprocating needle-bar, dovetailed or beveled at its edges and moving in corresponding guides on the front side of the head of the goose-neck. On the rear side of the goose-neck are horizontal dovetail guides c c, in which moves a slide, 0. Rearwardly from this slide projects a flat arm, B, having its upper and lower edges beveled to fit a dovetailed slide, B. To an arm, f, which projects downward from the inner end of this slide B, is secured the lower portion, A, of

the cloth -clamp, which extends across the cloth-plate and throat-plate q of the machine. This portion A is slotted longitudinally for the passage of the needle, the slots being of a size to accommodate the largest button-hole which can be stitched by the machine;

To the slide B is secured, by ears 6 e, avertieal sleeve, to, standing in front of the arm B, in which sleeve moves a rod, a, havingat its 7 lower end the laterally-projecting bifurcated portion a, between thearms of whichis swiveled the elongated concave clamping-piece A, the bottom of which is open or slotted from end to end. This clamping-piece A is adapted to fit in a eorrespondin g recess (indicated by dotted lines) in the lower portion, A, of the clothclamp. The top of the rod a, which projects above the sleeve 11., is provided with a head, a, having a projecting lug, against which plays thecam-shaped end ofa lifting-arm, b. A suitable spiral springis arranged within thesleeve u to depress the rod a after the manner of an ordinary presser-bar. The cloth is to be placed between these two portions of the clamp, the slitted button-hole occupying a central position with respect to the slots in the two parts, and the upper part, A, is firmly pressed upon the cloth by the spring which acts upon the rod a within the sleeve u.

The working parts of the machine, which communicate the requisite motions to the clothclamp, are attached to three shafts, one of which, F, is the driving-shaft, the second,D, is acamshaft, and third, E, is a rocking shaft. A pinion, G, Fig. 3, and shown in dotted lines in Fig. 2, on the driving-shaft F gears into'a toothed wheel, H, Figs. 1, 3, 10, ll, 12, mounted loosely on the cam-shaft D, and in its inner fiat face this wheel has a cam-groove, J. A lever, I, fixed to'the outer end of the shaft E, is provided with a stud, t, (shown in dotted lines,) which projects into the said groove J, and is thus caused to impart to the said rocking shaft E the rocking motion from whenceit derives its name. Mounted upon the rocking shaft E in such away that it must rock with said shaft, but can receive an independent endwise movementflsa sliding cam, K, Figs. 1 and 3. This sliding cam is provided with an upwardly-projecting bentarm, K, the top or hori zontal port-ionof which is provided with a cleft or slot, 70, having upwardly-flaring end walls, between which fits loosely the lower pointed end of a vertically-ad ustable tongue, L, secured to and moving in ag'uide,l,fixed uponthe sliding bar M, and this arm K imparts, through the medium ot'the adjustable tongue L, an endwise-reciprocating motion to said sliding bar M, Figs. 1, 2, 3, 6, and 7, the front end of which is secured to the slide 0, which carries the respective parts of the cloth-clamp, said sliding bar M being attached to the slide 0 through an arm, m.

The tongue L is made pointed and vertically adjustable and the end walls of the slot flaring, for the purpose of regulating the length of the longitudinal reciprooationsof the bar M, and consequently the length of the lateral reciprocations of the cloth-clamp. The upper portion of the tongue L is bent at a right angle, and is slotted to embrace a screw, Z, between its head and ashoulder, l", the lower portion of said screw being tapped in the top of guide I. By means of this screw it will be seen that the tongue L may be raised or lowered and its pointed end caused to extend more or less .into the slot k, as desired. The vertical portion of the tongue L is provided with a longitudinal slot, through which a pin, l, projects from guide I, the screw-threaded tip of said screw being provided with a suitable nut, as shown,- by which the tongue L is secured in position.

portion of the point of the tongue L is in the slot k the end walls of said slot will, of course, as the arm K vibrates, strike the tongue sooner than when only the narrower portion of the point is in the said slot, and consequently cause the tongue and the bar M to commence moving "sooner and to make longer reciprocations, which are com mnnicated to the cloth -clamp, and the lengths of the stitches formed are controlled by adjusting the screw Z up or down. By this sliding bar M are communicated to the slide 0 and cloth-clamp the lateral reciprocations, which co-operate with the stitchingdevices to forn he overseaming'and end bars of the button-hole. Thereciprocating sliding bar M is caused to have the variable action necessary to communicate the proper movements to the cloth-clamp for stitching the opposite sides and barring the ends of a button-hole by a saddle-piece, N, projecting downward and outward from said bar, and pro- When the wide vided with a curved arm or hook, n, Figs. 1

and 7, which bestrides the sliding cam K, and so prevents the bar from being moved too far in either direction.

A wheel, 0, Figs. 1, 2, 3, 10, 11, having a peripheral flange, O, and an inner flange, 0", is fixed upon the'cam-shaft D, and forms apart of the feeding mechanism. Upon the same shaft is loosely mounted a disk-wheel, O fae ing the wheel 0, and having its periphery rabbeted to receive the edge of flange 0, thus forming, in connection with wheel 0, an inclosed box. In the periphery of the hub 0 are formed longitudinal grooves 0, in which rest the tips of clutch-arms 0 These arms extend outward beyond, and have open slots 0 which embrace the inner flange, O, of the wheel 0. Spiral springs 0 connect the clutoh-armsO with the inner face of the wheel 0 An arm, Q, projects radially from the outer face of the wheel 0 and over the periphery of a cam, P, Figs. 1 and 3, on the driving-shaft F. A screw, d, passing through said arm, has its tip resting against the lower part of the standard in which shafts D and F have their bearings, and by means of this screw the distance of the arm from the cam may be regulated. A spring, 01, having one end attached to the end of arm Q and the other to the base of the'machine, serves to hold the arm Q upon the cam. Now, when the shaft F is ro tated thecain P will lift the arm Q, causing wheel. 0 to make a partial rotation, and the grooves in the hub of wheel 0 will cause the inner ends of the clutch-arms to move in the same direction and the slotted portions of said arms to clutch the inner flange, 0", and draw forward the wheel 0, thus communicating a partial rotation to cam-shaft D. A cam, R, on the cam-shaft D imparts, through the medium of the cross-head 8 (one end of which is in the groove 7' and the other in a recess 1' of the sliding cam) of 'a rocking lever, S, the endwise motion to thesliding cam K on the rocking shaft E, and so regulates the throw of the reciprocating sliding bar M, which is attached to the slide 1) of the cloth-clamp, which gives the stitch or barring motion. For instance, while the cloth'clamp is traveling in the proper direction to carry the button-hole so that the edge nearest the shafts will be stitched the hook embraces the portion of sliding cam K having the protuberance 1, which prevents the bar M from carrying the presser-foot beyond the proper lateral movement. When the end of the button-hole is reached the cam R will be carried around to such position that a bend, 1' in the groove 9' of said cam will cause the cross-head s and sliding cam to shift outward in the direction of arrow ii, Fig. 1, so that the hook will embrace the small part 3 of the slidin g cam, when the cloth-clamp can make greater lateral reciprocation to form the barat one end of the button-hole. When this haris completed the cam It will have so turned that the cross-head s will be out of the bend or curve of the groove 4" and in a straight circumferential port-ion of said groove, causing the sliding cam to shift still farther in the direction of arrow 5, causing the hook n to embrace that portion of the sliding cam having the protuberance 2, where it will remain until the opposite edge of the button-hole 'is stitched. When-this edge is stitched. another bend in groove 1-, similar to and diametrically opposite the bend 1", will cause the cross-head to shift the sliding cam inward, or in a direction opposite to that indicated by arrow 5, and the hook it will again embrace the small part 3 of the sliding cam until the other end of the button-hole is barred as was the first. Another cam or endless screw, T, the groove in which forms a regular right-and-left-handed screw, is also fixed on the cam-shaft D. A short' arm,U, furnished with a pin or stud, takes into the groove in the screwcam T and gives a rocking motion to a bar, V, at the other end of which is another short arm, \V, Figs. 1, 2, 4, 5, and 6, which is slotted and furnished with a thumb-screw, d, and nut and runner 0.

This runner is placed between two guides, 'f' f,

on the slide 15 of the cloth-clamp, the runner being made adjustable by means of the nut, so that a button-hole of any desired length may be indicated.

An arm and handle, X, Figs. 3, 10, 11, is keyed or fixed to the cam-shaft I) for the purpose of setting the clothclamp in any desired position by turning the shaft D, so that the stitching may be resumed or commenced at .anypart ot' the button-hole without withdrawing the cloth from the clamps or operating the stitching mechanism.

Having now set forth the nature of the said invention and explained thema tiner of carrying the same into effect, I wish it to be understood that I claim 1. The combination, with the stitching devices, of cloth-clamp composed of parts A A and its slides B and G, the sliding bar M, the mechanism for reciprocating said bar longitudinally, the shaft V, mechanism for rocking said shaft, and adjustable devices connecting said shaft to slide B, whereby the extent of the movement of the clamp may be regulated, substantially as described.

2. The combination, with the cloth -clam p and the slides upon which it is caused to move in directions at right angles to each other, of the sliding bar M and means for reciprocating the same longitudinally, saddle-piece N, carrying hook n, the sliding cam K, and mechanism for sliding and rocking said cam, substantially as described.

3. The combination, with the longitudinallyreciprocating cloth clamp, ot' the slidin g bar M,

tongue L, saddle-piece N, carrying hook at, sliding cam K, having arm K, slotted to receive said tongue, and the devices, substantially as described,for operating said sliding bar and cam, for the purpose set forth.

4. The combination, with the cloth-clamp and its slides, of the connected sliding bar M, saddle-piece N. carrying hook at, the sliding cam K, the oscillating arm carrying cross-head s, rotary cam It, rocking shaft V, adjustably con nected to the cloth-clamp, the cam and inter mediate connections communicating motion to said shaft, the stitching mechanism of a sewing-machine, and mechanism by which motion is communicated to all of said moving parts from a common prime motor, substantially as described.

5. In a button-hole sewing machine, the combination of a cloth-clamp, slides carrying said clamp, a bar conhe'cted to the slides, and mechanism, substantially as described, for imparting areciprocatin gmotion to the said bar and slides, with a hook carried by the bar, and a movable cam controlling thchook, and devicesforautomatically changing the position of the cam in relation to the book, all substantially as set forth. 7

6. In a button-hole sewing-machine, the combination of a cloth-clamp and slides carrying said clamp with a bar having two arms, a camscrew, 'l,'ha"in g a groove in its periphery, forming a regular right-and-left-handed screw and controlling one of said arms, while the other is connected to one ofthe slides, and with mechanism for imparting an intermittent rotary motion to said cam, substantially as described.

Dated 14th March, 1881.

F. SIMMONS.

Witnesses:

J. J. IRVING, .A'. HAMMOND.

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