US889882A - Sewing-machine for finishing buttonhole-pieces, &c. - Google Patents

Description

PATENTED JUNE 2, 1908.

. H. E. HILL. SEWING MACHINE FOR FINISHING BUTTONHOLE PIECES, 88.

APPLICATION FILED MAR. 26, 1908- 2 SHEETS-SHEET .1.

IE I: H

H. E. HILL.

SEWING. MACHINE FOR FINISHING BUTTONHOLE PIECES, 6w.- IAPPLIGATION FILED MAR. 28, 1808.

PATENTED JUNE 2, 1908.

2 SHEETS-SHEET 2.

- U TED STATES PATENT OFFICE.

HERBERT E. HILL, OFHAVERHILL, MASSACHUSETTS, ASSIGNOR TO THE REEOE BUTTO HOLE MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

SEWING-MACHINE FOR IEIN'ISIHZIN'G BUTTONHOLE-PIEOES, &c.

I Patented June 2, 1908.

Application filed much 26, mos. Serial No. 423,326.

To all whom it may concern: 'Be it known that I, HERBERTE. HILL, a citizen of the United States, and resident of ,Haverhill, county of Essex, State of Massachusetts, have invented an Improvement/in SewingeMachines' for Finishing Buttonhole? Pieces, &c tion, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts. This invention relates to sewing machin'es of the class wherein the work to be stitched is bent just before it is tobe penetrated by the needle, in order that the needle may enter and its noint emerge from the same side,

of the work to produce.'a blind stitch] Such a machine, adapted to stitch down the thrums in button-hole pieces for boots ,and shoes, forms the subject-matter of United States Patent No. 404,863 granted June 11, 1889 to John Reece. In said patent the work is intermittingly bent or pressed-into the grooveof a throat-plate by means of a vertically reciprocated bendermounted on the overhanging arm of the machine adjacent the presserefoot, and operated by a cam and intervening connections, an eye-pointed needle being reciprocated horlzontally trans-- versely to the groove of the throat-plate, means being provided to impart to the needle a lateral motion in opposite directions at each alternate thrust, feeding mechanism of the; usual four-motion type serving to feed the work in the direction of the length of the needle. Y

My present inventionihas for one of its objects the simplification of the stitch-forming I I cation an particularly mechanism in a blind stitch machine, wherey the lateral vibration of the. needle-bar is obviated. 1

Another objectof the invention is to pro vide novel bending means for the work, whereby the ov'erhangingarm .of the machine is dispensed with and t e movement-of the bender controlled by the feeding mechanism, acting in conjunction witha presser. 1

he varlous novel features of my-invention will be full described inthe subjo1nedspecifipointed out n the. following claims.

Figure 1 isya top plan portion of a sewing-m h f of which the following descriplarge scale through motion type,

view of a sufficient broken out; Fig. 3 is a view in elevation of the bender, bender-carrier and presser inf inoperative position; Fig. 4 is an underside view of part of-a button-hole piece, showing the thrums stitched in place by the blind stitching; Fig. 5 is a sectional detail on a the work in the direction of feed, showin the bend and the needles thrust therethrough; Fig. 6 is an under side view of the arts shown in Fig. 5', illustrating the two nee les, and the shuttle-thread coopcrating Withthe loops of needle-thread; Fig. -7 is asimilar view, but with the needles re tracted' from the work, and showing the two lines of stitches interlocked within the material at each side of the thrum-ends.

Referring to Figs. 1 and 2 the bed-plate A, the main shaft A driven in any usual manner and havin a disk I) secured to its front end, he cran -pin b on said disk, the link I) pivotally connected at' one end with the crank-pin; the shuttle a, (see dotted lines Fi 1) the gatherin plategd for the thrumen s, mounted on t throatlate a secured to the'bed-plate and having a transverse groove (1 into which the work-1s bent or ressed intermittingly, and the feed-bar dh' llaving the usual serrated surface to enga e the work and of the foureriving its motion in usual manner from cams on 'theshaft A may be e shuttle-cover dfl'the and are all substantially asin the Patent No.

404,863 above referred to, and operate as therein set forth, the feed-motion cams being shown at b b by dotted lines Fig. 1.

Intaccordance with my present invention the needle-bar 1 is mounted to reciprocate horizontallyin bearings 2, 2 in ayoke-like frame 3 supported at 4, 5, Fig. 2, in the' frame-work of EOSHJIOI} by a bar 6 secured fixedly to the amework of the base A v bycheck-nuts .7,

'.,Fig. -.1-. Agcollar Sfast .on the needle-bar is the machine andheld in fixed pivotallyqeonnected with the link b, whereby retation' of'the diskfN fleets longitudinal reli'eiptocatlon of the needle-bar m its fixed Theinnenend of the needle-bar has a clampe in which are fixedly secured f the shanks of two eye-pointed needles 10,

.referre placed side by side in parallelism with each other and with the needlebar, said needles being reciprocated transversely to the groove a in the throat-plate, the latter being slotted for the assage. of the needles, as in the patent d to. ',The' bevel-faced needle-guide b pivoted at b on the under side of the bedplate A, is upturned .into the slot, substantially as in said patent, and is acted upon by an arm 11 having a s ring extension 12 adjustably held at 13, ig. 1, a leaf spring 14 fast at one end on the under side of the arm 11 resting at its free end on the cam-shaped periphery of the disk b an adjusting screw 15 on the arrnll acting u on the free end of the spring above the dis As the needle points move toward the work the needle- ;guide 6 is lifted and presents its beveled face close to the needle path as the needles are about to enter the work, so that the points of the needles cannot glance off the work, which at that time presents a convexed surface to the entering needles. As the latter penetratie the work the guide b is gradually lowere By. using twoneedles side by side, to simultaneously enter and leave the work, each needle carrying a thread, I dis, ense with any lateral vibration of the need e-bar to cause entered by and interlocked with the shuttle thread, and two lines of blind stitching are the single needleto penetrate the work first on one and then on the other side of the thrum-ends, for with the two needles the loops of needle thread formed thereby are formed, as shown in Figs i, 6 and 7. A much higher speed can be obtained, for the needle movement is reciprocatory in the (h rection of the length of the needle-bar, only,

and a very positive action is also attained.

In Fig. 6 the loops 10 of needle-thread are entered by the shuttle-thread s, and as the needles 10 are retracted the loops 10 are drawn back into the material, see dotted lines Fig. 7, interlocked with'loo s 8X of the shuttle-thread, at opposite si es of the thrum-endst, the blin -stitches when completed showing only at the under side of the work w, substantially as illustrated in Fig4. As each opposite .pair of interlocked loops is formed in the work the shuttle-thread crosses from one to the other line of stitch-' ing, as at 8 securing the thruna-ends securely in lace.

lhe novel bender will .no'w' be deserihed,

and its manner of operation explained.

Upon the bed-plate A is secured by'scre'ws 1 16 a late having ears 17 to receive a pin 18 on w ich is pivotally mounted a late 19 whlch I term a base, having a limite' rocking movement toward and from the bed plate A. on the pivot 18 at right angles to the l in needle-path, a latch 20 pivoted on the bedplate being adapted to hold the base down against the bed-plate, as in Figs. 1 and 2, when said latch isin the position shown in said figures. The free end of the base has fulcrumed upon it at 21 a bender-carrier 22,

shown ct-n-rly in plan, Fig. 1, and having rigidly attached to its free end a lateral, cylindrical arm 23 which projects across the feed-bar d and has its end downturned to .form a bender. 24. 'Said bender is located above the groove rain the throat-plate a,

t and is given a vertical reciprocating motion to intermittingly depress the work into the groove, to form bends, as w therein, each bend being formed just before the needles .10

are moved forward to enter the work. A strong leaf spring 25 is shown as fixedly secured to the top of the carrier 22-by screws '26, the free end of the spring bearing against the'top of thebase 19, the spring. being so arched that its constanttendeney is to depress the free end of the carrier when the base is held by the'latch 20 in its operative position, Figs. 1- and 2; When; the latch is swung around to release the base the tension of thespring is relaxed, and the base and carrier assume the relative positions shown 111 Fig. 3, and at such tlme the work can be 27 is rotatably mounted on the arm 23 above the feed-bar (1 to travel on the upper side,

of the work to, Fig. 2, when the work-is in position. Supposing the. parts to be in operatlve ressure o the spring 25 acts to depress the es end of thecarrier and thereby-the roll 2 7\ bearsfirmly upon the work, and when the feed-bar descends the bender 24 acts to press the work downinto the. groove a of the throat-plata'to form the bend preparatory to the 'forward stroke of theneedles. The needles and the oops 10 areentered by the shuttleright, Fig. 2, whilein its lowered position and then rising preparatory'to the work-feeding stroke to the left. When the feedebar rises it acts through the intervening work upon the presser'roll'27, lifting it and the carrier position, as in Figs. 1 and 2, the

enetrate the work below the bender readily inserted or removed. A presser roll thread 8, as in Fig. 6, and said needles are I then withdrawn, the feed-bar moving to the being depressed by the spring 25 and elevated by the rise of the feed-bar 0Z This construction and arrangement does away with the overhanging arm for the bender and presser, and eliminates the cam and inter vening devices for operating the bender, simplifying the construction and leaving the bed-plate clear for free manipulation of the.

work, asthrbender-carrier and'itsl base 19 are located at a suIficient-distancefrom the presser and bender to admit various Widths ofwork. v

The descent of the bender is limited by adjustable stop-screws 28 which are mounted on thelca'rrier 22 and engage the bed-plate whenthe spring 25 is fre to act to depress the bender.

My invention is not restricted to a machine for finishing buttonhole pieces, as will be manifest, -nor to 'the precise details of con-V struction and arrangement herem shown and described as the same may-be modified or changed in different particulars without departing from the spirit and scopeof my invention as set forth in". the appended claims. I

. Having fully'described my invention, what I claim as new and desire to secure by Letters Patent is I 1. The combination, with. a grooved throat-plate, and'a bender to intermittingly bend the work into the groove, of. stitchforming mechanism including two parallel,

eye-pointed needles, a horizontally recipro cating needle-bar on which the needles are mounted, and means to reciprocate the.

needle-bar, feeding mechanism acting in the direction of the length of the needles, and.

means governed by said feeding mechanism to effect the operation of the bender.

2. In a sewin -machine, means to inter mittingly form ends in the work, stitchforming mechanism including two parallel,

r eye-pointed needles, a needle-bar on which '45 needle-bar at ri ht angles to the "bends formed in the wor and to thrust the needles into such bends, combined with feeding they, are mounted, fixed ,bearings for the needle-bar, and means to reciprocatev the mechanism acting in the'direction ofthe length of the needles, said feeding mech-' anism governing the operation of thebe'nding me ans.

3: In a sewing-machine, the'combination with a plate having a,(groove, and a ,bender en the Work: into vthe to intermitt-ingly groove, of feeding mechanism, ,means gov erned thereby toeifect the operation of the bender, and stitch-forming mechanism including two needles mounted side by side, and means toreciprocatefthe'm in a path transverse t0 the roove, to enterthe bends formed in the Wor I l v 4. In a sewing-machine, a grooved throatpiate, stitch-forming mechanism, including two needles'mounted side by side, means to reciprocate the needles in a horizontal path transverse to the groove, a bender to intermittingly pressthe work into the groove, of

initting feed of thework, combined'with stitch-forming mechanism, including horizontally reciprocating needles to enter the bends formed in the work.

6. In a sewing-machine, a grooved throatplate, a bender to intermittingly depress the work into the carrier fulcrume adjacent the ,throat plate, aspring acting upon the carrier to operatively depress the bender upon the work,

'(groove, a. rocking bender-' feeding. mechanism, and means governed thereby to intermittingly lift the bender and its carrier-against the action of (the spring. ,7.

-grooved throat plate, a rocking bendercarrier-fulcrumed adjacent the bed-plate, a

In a sewing-machine, a bed-plate, a I

laterally extendectarm on the free end of the j carrier, a downturned bender on the arm above the groove in 'the" throat-plate, a spring ,to depress the carrier and bender, feeding mechanism, including a feed-bar,- and a presser roll rotatably mounted on the bender arm above the feed-bar, the latter acting through thework upon said ,roll to intermittingly liftqthe bender againstthe action of the'depressin spring;

8/ bender-carrier having a laterally, extended ips In asewing-mac ine,.a bed-plate, a

arm provided with a dependingbender, a base fulcrumed on the"bed-plateand piv-,

otally-connected with the carrier, a s ring fixed on the carrier and acting upon the ase, a latch to hold the basedown upon the bedplate, to flex the spring and depress the carrier and bendeiy' -a thr'oa't late havir'ig a transverse groove beneath t e bender, de-

pression of thelatter pressingthe work into the groove, a feed-bar, and means governed bg movement thereof to intermitt ngly lift t e bender-carrier and bender. I

" 9. In a sewing-machine, a bed-plate, ,a'

grooved throatlate, feeding mechanism, inoludingxa ,fee -ba r adjacent the throatplate, a rolling -presser above the feed-bar, a spring depressed support for the presser,

having an attachedbender above the groove.

in the throat-plate, and manually-controlled means to release the presser and bender from na control of the spring and to place it under such control, the operation of the feed-bar acting through the interposed workupon the presser and efi'ecting intermittent lifting of the bender against stress of the spring.

In testimony whereof, I have signed my me to this specification, in the presence of tWo subscribing witnesses.

HERBERT E. HILL. Witnesses: I

THOMAS J. CARTY, .VVM. J. MGLAUGIILIN.

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