US1089473A - Insole-lip-sewing machine. - Google Patents

Description

E. JOHNSON INSOLE LIP SEWING MACHINE.

APPLICATION FILED JAN. 14, mo

Patnted Mar. 10, will Z SHEETSMSHBET 1.

A El, f0H\SOl\1`l msm@ LIP :SEWING MACHINE.

APlLlGATlON FILED JAN. 14, IMU.

Patented Mar. l0, 1914..

2 SHEETS-*SHEET 2.

TED Silr'llES PATENT FFICE. u

ALBERT E. JOHNSON, OF IBIEIiJRLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PAIERSON, NEW' J'ERSFV- A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

INSOLE-LIP-SEWING MACHINE.

raient-ed Mar.. io, i914.

Application tiled January 14, 1910. Serial No. 538,087.

To all whom 'it may concern Be it known that I, ALBERT E. JOHNSON,

. a citizen of the United States. residing at l Vto sewing machines for forming what are known commercially as Economy insoles.

ln. forming the Economy type of insole the blank is treated by slitting its face to 'form a channel and by slitting the edge to t'orm a feather, these operations producing two independent, contiguous flaps' at themargin of the blank. The two flaps thus formed arc turned up from the channel and the feather and secured together to form a single, compound lip. Thereafter reinforcing fabric, such as canvas, is applied to the tace of the insole and tothe lip.

The present invention contemplates an improvement in the formation ot insoles of the general character described and relates particularly to the step of bringing the channel and feather tlaps together to form a single, compound lip. Heretoforc the tivo flaps have been secured together either by cement or by a line of stitches formed in the usual manner by means of Well-known stitch Jforming mechanism in sewing machines-suitably modified to adapt them to this part-icular class of Work.

The object of the present invention is to modify and adapt the domestic Willcox & Gibbs, or similar type of sewing machine, to sewing together the lips of EconomyT and other combination insoles.

ln accordance with this object one feature of the invention comprises a work supporting guide or positioning device adapted to bear on the grain side, or unchanneled sur- -tace, of the insole, so constructed and arranged that when the insole is presented to the machine with one of its iiaps resting on a work table shaped to accommodate` it, the two upturned flaps will be held, throughout the operation, in such relation to the stitch forming mechanism as to properly receive the stitches. The guide is preferably in the form of a roll to exclude 4frietionand so mounted that the space above and in front ot' the Work table is unobstructed, thereby permitting the, 'insole readily to be inserted and removed and providing for its free and easy manipulation during the stitching operation. The axis of rotation of the roll is oblique to the plane of the work table thereby permitting the insole to be flexed out- Wardly to clear the working parts above the Work table during its feed through the machine. Means is provided to Withdraw a guide, so mounted, from its engagement with the insole at Ithe time the presser-foot is lifted to further assist the operative in insertingthe insole in working position and rermoving it therefrom. The preferred manner otaccomplishing this end is by controlling the movement of the presser-foot and guide from a single actuator. The feature oi the invention just described is not to be understood as limited to use in a sewingn` machine of the Willcox & Gibbs type, as

illustrated, as it is applicable to any sewing machine adapted to secure together the flaps of insoles.

The necessary change in the size of the Work table 1n order to properly accommodate and position the insole flaps places the marginal portion of the insole, when inl working position, somewhat in the path of the rotary thread hook or east-oit forming a part of the stitchforming mechanism."` A 'further feature of the invention consists in the provision of a guard plate orcap inclosing the upper portion of the path of the thread hook thus effectively housing it and preventing its engaging' and injuring the insole in the operation of the machine or injuring the hand of the operative.

In order to provide for an engagement of the feeding foot with the base of the lip of the insole, the foot is lightened to a considerable extent and arranged to operate at the outer edge of the Work table. In such a location there is liability ofthe feed foot engaging the edge of the insole, on the upstroke of its four-motion feed, instead of the, base of the flap unless means is provided t insure aproper engagement of the feed foot with the Work.

In accordance with a further feature!v of shaft whenever work is removed, at each revolution of the shaft, the feed foot will engage and lift tlie-presser-foot arranged just above and in opposition thereto. Such an engagement is particularly injurious to vthe feed foot soonl wearing it out andy re-J jrruiring its replacement. Also, "in a ma- ,f chine designed to sew together the two flaps of insoles with the feed Afoot lightened to the extent necessary to cause it to act properly on the insole i'iap, its Strength is considerably weakened and in addition to the excessive wear an injurious strain would be placed upon it were it permitted to engage and lift the 'presser-foot in the manner just described..

An important characteristic of the invention is found in the provision of a device to prevent contact of the feed foot with the presser-foot when the machine is running without work. Such a device may conveniently comprise 'a stop mounted von the presser-foot bar and arranged to be engaged by the feed foot bar and cause the presserfoot to he held out of contact with the rising feed foot, thereby eifectually preventing any cngageinent of the feed foot and presserfoot. The stop 'may be adjusted so that it will not interfere with a proper operation of the feed foot when work is in the machine. This feature of the invention is not limited in the scope of its application to a sewing machine modified to sew the lips of insoles but in its broader' aspect is applicable to any sewing machine of the general type described.

@ther features4 of the invention relate to certain devices, combinations and arrangements of parts hereinafter described and claimed, which possess advantages of construction and operation that will be apparfnt to those skilled in the art.

" The preferred embodiment of the invention is illustrated in the accompanying Loaders is a detail, in section, of the feed-foot and its bar taken on the line 4 4, Fig. 3; and Fig. 5 is a detail of the presser foot showing it in side elevation, bottom plan and transverse section on the line f In the embodiment of the invention illus- `trated'in the. drawings, the lVillkcoX & Gibbs sewing machine there shown 1s provided] with the usual stitch forming mechanism im.

cluding a straight eye-pointed needle 2 and a rotary thread hook or cast-off 4. The thread hook is rotated by being mounted directly upon the driving shaft, 6 and the needle bar is reciprocated, in guides `on the frame, by the\ oscillations of a pivotally mounted lever 8 actuated from an eccentric on the drivin shaft 6, all as usual. A fourmotion feed oot l0 is vcarried by a feed bar 12 (see Fig. 4,) which is pivoted at 14 to the machine frame and operated in the usual manner by a crank on the driving shaft which operates within a slot 16 at the free end of the feed bar. A presser-foot 18, to be described later, is carried by the usual presser-foot bar 20.

The machine as illustrated` is provided with a thread pull-off comprising a thread pulling iinger 22 actuated by a movement of a hooked rod 24, but as this mechanism does not form a pa-rt of the present invention, being claimed in a co-pendin'g application of same date herewith, Serial No. 538,086, it need not be described in detail.

Instead of the usual large, latwork table provided with domestic sewing machines, in the present machine the Work table 26 is made. quite small, as shown in Fig. 2. It is removably held in a casting with its outer` edge (shown at the left and at the bottom in l? ig. 2) in a plane but slightly at one side of the plane of operation "ofthe needle 2.

This change in the'size and location of thework table is to permit it to support the two upturned flaps of an insole in suchposition relative to the stitch forming mechanism as properly to receive a line of stitches. When the insole, is inworlring position its edge flap rests upon the work table, the outei edge of the worlr table extends well into the angle between the outer flap and thefeather, and the channel ilap is engaged by the 'presser foot 18. A portion of an insole in portion of the surface of the work available upon which Athe feed foot may operate. To enable the feed foot to operate in the small arealeft for it, it is considerably lightened over the feed foot in ordinary use in domestic sewing machines. ln its present form the feed foot comprises a. thin blade (see `Fig. 4) which is adapted to engage the base of the flap of the insolewhich rests upon the work table, thereby permitting the stitching to take place near the upper edges of the fiaps as is desirable for reasons well known to those skilled in the art.

The small area of the work table leaves the thread hook 4 exposed and, owing to the position of the insole in the machine, unless some protection be provided, the thread hook, in its rotation, is liable to injure either the marginal portion of the sole by engagement therewith or the hand of the operative who directs the feed of the work through the machine. To prevent such injury the thread hook 'is provided with a cap or guard 28 Fig. 3). removably supported in the casting 25, which ineloses the upper portion ot the path of movement of the thread hook,

thus effectively housing it aird preventing its coming in contact with either the work or the operative. When the work is placed in the machine in the position shown in Fig. l, the insole must, be bent or iexed outwardly in order to clear the mechanism above the work table and this tends to throw the mar- `ginal portion of the insole, extending below the work table. inwardto a position where its edge would be engaged by the rising feed foot, thus interfering with the proper feed of the insole. To obviate this diliieulty the guard plate 528 over the thread hook is provided with a depending edge plate 30 arranged in a plane outside of the plane of operation of the feed foot (see Fig. 2). This plate provides a bearing .for the feather of the insole and forms a gage to hold the marginal portion ot the insole out of the path of movement of the feed foot (see Fig. l).

.Tn order to maintain the two flaps of the insole in stitch receiving position during the operation of the stitch formingr mechanism, the machine is also provided with a work positioning device or guide comprising a roll B2 adapted to bear upon the unchanneled face of the insole at a point opposite the flaps. This roll isfmounted upon one arm 34 of a bell-crank lever which is pivoted at 35 in a bearing located upon the machine frame at a point below the Work table. This mounting of the work guide provides for an unobstructed space above and in frontof the work table, thereby permitting the insole readily to be inserted and removed and also provides for a free and easy manipulation o't' the insole by the operative during the stitching operation. The guide roll 32 is /lield in working position by means of a coiled spring 37 suitably connected by its an formed on the casting 25. The rearwardly ends to pins upon the bell-crank lever arm 34s and the machine trame. The other arm 3G, of thc bell-crank lever which supports the work guide, is connected by means of the well known yoke and sliding block to the forwardly extending arm 38 of a second bellcrank lever pivoted at 39 in a bearing extending arm l0 of this latter bell-'crank lever has depending therefrom a chain 42 ,which is connected to any usual or convenient form of operating treadle (not shown). With this construction, when the treadle is moved in a direction to depress the bell-crank arm et() motion is communicated troni the bell-crank arm 38 to the bell-crank arm in a direction to move the guide roll outwardly into a position to permit insertion or removal of-tlie work. is released, the spring 36 returns the guide roll to its working position. An adjustable stop 33 is provided to limit the inward movement of the bell-crank arm 34 when no work is in the machine so as to avoid injury to the operating mechanism by an engagement of the guide roll therewith.

As the presser foot 18 must be lifted bet'ore the work can readily be removed from the machine, means may conveniently be provided -for liftingtlie presser-foot at the time the guide roll 32 is removed from working position. To this end a lever 44 is piv- Oted at 39 and is adjustably connected at its rear end in a well known manner (see Fig. l) to the hell-crank arm 40, its forward end extending to a position beneath a shoulder 4G (see dotted lines Fig. l) formed on the presser-foot rod. The lever H is preliminarily adjusted to a position to allow for changes in the position of the guide roll, due to the varying thickness of the work as it is fed through the machine without an engagement of the lever '14 with the shoulder 40. The space provided for this purpose, however. though suiiicient to prevent an inopportune lifting of the prcsse1.-ioot7 is not sufficient to prevent the proper operation of the lever 44 when the bell-crank arm 40 is dcpressedby means of the treadle.

In order that the machine may operate upon the flaps of insoles having quite sharp toes, the presser-toot 18 is given a curvature upon a snial radius, in practice about 3/16, and its extremity is beveled at its inner sidel toward the tip of the foot. The underside or' the end of the foot 4is also beveled toward its inner edge, for a purpose presently to be explained. so as to leave an extension or rib 48 (see Fig. 5) at its outer edge. This rib serves two purposes. c

lt frequently happens that the (inps. and particularly the channel l'iap, fall back toward the solo from the 'position attained aiter the' setting operation. The usual flat presser-toot cannot readily obtain a good bearing on a fiap in this condition and has a tendency to slip olf the tlapfud onto the work table. VUnder ilu-sc conditions there is a constant tendency for the sole to he forced outward.v against the pres 'ure of the guide roll. and oil of the work tz lic. )Vith the under side of the presser Jfoot beveled as described, an angular entrant edge is pre- )Vlien the treadle 'Iltis Ythe operative until position to receive the stitches. In turning i asharp toe the pointed end of the t'oot acts toe` below its edge and within the channel before the turn is made. The end of the t'oot thereafter acts as a wedge to torce an improperly set flap outward awayY Jfrom the sole. The rib t8 is at the same time placed in the channel and acts on the flap as a retainer to prevent the toot at this time from slipping otf of the channel tl'ap and onto the work table. The rih t8. also tits well into the shoulder toi-med at the base ot' the channel flap and b v means of the grip thus Vobtained assists in guiding the insole into stitch receiving position. To accomplish the saine purpose the gage plate 30 is provided at its upper edge. at a point substantially opposite the presser-foot. with a similar rib 5() (Figs. 2`and B) which engages the shhulder at the hase of the feather. rIhe `ruidevroll 32 and the ribs 4S and 50, just described. act together to maintain the insole in proper position during its feed through the machine to receive a line of stitches through the two tlaps.

he presser-toot har 30 is provided at its lower end with a stop (Figs. l and having a collar surrounding the presser rod and held in any desired position of vertical adjustment by means ot` a clamp screw 53. lVhen no work is 1n the machine the feed har l2, as it rises during its four-motion movement, will engage the stop 52 betore the feed t'oot l0 engages the presser-foot 18 and the presser-foot will. therefore, be held out of contact with the rising feed toot. The adjustment ot"the stop upon the presser-foot bar is such that while the feed toot is prevented from engaging thefpressert'oot when the-machine is ruiming without work. it nevertheless does' not prevent a proper feeding engagement of the .feed foot with the work when work is passing through the machine. lf the feed foot l0. which, as explained. is quite delicate, were permitted to engage and litt the presser-foot. as is customary. it would he liable to injury.v

The stop 52 ellectually prevents injury to the t`ced toot from this cause.

The stitching ot' the upturned fiaps starts at one shank and the insole is ted through the machine automatically, being guided by the. other shank is reached when the guide-roll and presser-foot are withf-lrawn and the insole removed from the machine, With the construction described. the flaps are immediately and positivelyY secured together by a line ot stitches properly located relatively to the base of the aps and insuring a retention ot both the flaps in upturned position while the reim forcing' fabric is being applied and during the .stitching of the upper and welt to the insole. a

ln the following claims the term feather is'descriptive of that portion of the margin to engalfe the tla i. at the advance side of the i of the insole lvin(T beneath the outer one of t t* f3 the two tlapswhich are cut from the substance ot the insole. however the insole is slit or cut to produce such flap.

The nature and scope of the present invention having been indicatediand the preJ 'ferred anhodiment of the invention having been specifically described.v what is claimed as new is: 'Y

1. A sewing machine for securing together the two contiguous flaps of an insole having. a channel and a' feather, having, in combination. stitch forming mechanism, a .Work

vtable adapted to engage the outelwtlap and the two contiguoustlaps of an insole having a channel and a feather, having,'in combination, stitch forming mechanism, a Work table adapted to engage the outer Hap and having its outer edge extending intro the` angle between the outer flap and the feather,l

a presser-foot adapted to engage the channel 1 flap'. a work guide obliquely arranged with respect to the surface of the Work table to b ear on the unchanneled face of the insole and hold the flaps in stitch receiving position on thel work table, and a support for the guide rising from lthe machine frame below the work table.

23. A sewing machine t'or securing together the two contiguous iaps of an insole having a channel and a feather, having, in combination, stitch forming mechanism, a Work table adapted to engage the outer flap and having itsl outer edge extending intolthey angle between the outer flap and the feather,

.a presser-.foot adapted to engage the channel Hap, a work guide to bearon the unehanneled bination, stitch forming mechanism, a Work table adapted to engage the youter Hap-*and having its outer edge extending into'It-he 15 in combination, stitch forming mechanism, a

tation of the insole during the stitching oper- .et ihner side toward the tip of the foot formnoname angle between the outer flap and the feather,

a presser-foot adapted to engage the chair nel iiap, a work guide to bear on .the unchanneled face of the insole and hold the fiaps in stitchreceiving position on the work table, a movable support for the work guide fulcrumed at a point below the work table,

a spring to hold the guide in working position, and means under control of the operative to simultaneously lift the presser-foot and remove the guide from working position.

5. A sewing machine for securing together the two contiguous tiaps of an insole.l having,

work table, a feed foot operating in front of the outer edge of the work table, and a work gage arranged in a plane outside of theplane of operation of the feed foot to ,"gomaintain the marginal portion of the insole out of the path of movement of the feed foot.

6. A sewing machine for securing together `the two contiguous flaps of an insole, havo ing, in combination, a work table adapted to engage one of the flaps, stitch forming mechanism including a rotary thread hook adjacent the work table, a feed foot operat ing in front of the outer edge of the work table, and a plate extending over the top and depending over the outer face of the thread hook, said depending portion lying in a plane outside of the path of movement of the feed foot, to protect the marginal poration.

Tr'. sewing machine for securing together the two contiguous flaps of an insole, having, in combination, stitch forming mechanism,

to a presser foot continually in engagement with the work, a feed foot arranged and acting to press the work against the presser foot to grip and feed the work, and a stop mounted on the presser-foot bar adapted ,i 4e when no work is in the machine to be enl gaged by the feed foot bar before the feed i foot reaches a position to engage the pressei`- foot. l 8. A sewing machine for securing to-v oo gether the two contiguous flaps of an insole, having, in combination, stitch forming mechanism, a work table to engage the outer flap, and ay presser-foot to engage the chair nel flap having its extremitv beveled at its 'ing an entrant wedge to open the channel in advance of the foot and its underside beveled toward its inner edge.

.9. t 'sewing machine for securing toetlgle'r the two contiguous flaps of an insole, levi-ng, in combination, stitch forming tmechanism, a work table to engage the outer Eilap, an "a presser-foot to engage the channelL/fia having its extremity beveled at te. its inner side toward the tip of the foot forming an entrant wedge to open the channel in advance'of the foot and provided at its outer edge with a channel engaging rib. it). A sewing machine for securing together the two contiguous flaps of an insole, having, in combination, stitch forming mechanism, a work table adapted to engage one of the flaps. and a curved presser-foot to engage the other iiap provided with a channel shoulder engaging rib at its outer edge to assist in guiding tht` insole into stitch receiving position.

1l. A sewing machine for securing together the two contiguous liaps ol an insole, having, in combination, stitch formingmechanism, a work table adapted to engage one of the flaps, a reSser-foot to engage the other flap, a rib at the outer edge of the presser foot and a rib cooperating therewith to engage the insole material at the buse of the flaps and assist in guiding the insole into stitch receiving position.

12. A sewing machine for securing together the two contiguous llaps of an insole having a channel and a feather, having, in combination. stitch forming mechanisln. a work table. for supporting the insole b v engagingl the outer flap aud having its` outer edge extending into tlv` angle be tween thc outer iap and the feather, an upwardl \y extending bell-crank lever fulrrumed below the work table having a guide roll on one arm to bear ou the unchanneled face of the insole and hold the llaps in stitch receiving position on the work table, a second bell-crank lever having one arm operativel)7 connected to the second arm of the first lever, and operating means connected to the, free arm of the second lever for moving the guide relatively to the work.

13. A sewing machine for securing together the two contiguous flaps of an insole having ay channel and a feather, having, in

l i combination, stitch fornnng mechanism, a

work support for supportiim,` the insole by engaging the outer flap and havingl its outer edge extending into the angle between the, outer flap and the feather, a pivotally mounted work guido to bear on the unchanneledface of the insole and hold the llaps in stitch receiving position on the work support', a lever for actuating said work guide to move it relatively to the work, a presserfoot, and means connected to said actuating lever for lifting the presser-foot at the time the `guid e is moved.

lll'. A sewing machine for securing toI gether the two contiguous flaps of an insole having a channel and a feather, having, in combination, stitch forming mechanism, a work support for supporting the insole by engaging the outer flap and having its outer edge extending into the angle between the outer flap and feather, a pivotally mounted work guideto bear on the unchanneled face Loeefive of the insole and hold the lizips in stitch reto a position to vprevent movement of the ceiving position on the Work support, a lever l presseivfoot during slight movements ot the i@ for actuating said Work guide to niove it g guide.

relatively to'the Work, a piesser-toot, n ALBERT ,OFNSON presser-foot lliting lever connected to said i; y

actuating lever for lifting' the presser-toot Witnesses:

yat the tinie the guide is niovecl, and means RUTH A. SiMoNns,

permitting adjustment of said lifting lever XVARREN G. Osnnn.

Itis hereby certified that in Letters Patent No. LOSQAYS, granted Merci 10, 191e, *upon-the application of Albert E. Johnson, of Beverly, 'iviesssehnsetts, im improvement in lflnsole-Lip-Sewing Machines, an' error appears in the printed specification requiring correction ss follows: age 2, line 104, after Word e lett insert the Word, abbreviation, amel numeral, n F279. 1,' etici that the said mettere Patent should be read with this correction therein that the same may eonform to the ILetters Patent No. 1,089,473.

record of the ease in the Patent @iiice signed and sealed this 12th day of Maj?, A. D., 191i.

[SEAL] J. 'it

Acting @ommelssz'onw Paie Correction in

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