US2015760A - Insole and method of making insoles - Google Patents

Description

Oct. l, 1935. E. E. ML`|R|=4W- 2,015,760

INSOLE AND METHOD OF MAKING'V INSOLES Filed May' 19, 1955 /NVE/v TUN;

Patented Oct. l, 1935 PATENT OFFIQE INsoLE AND Mie'rnon or MAKING INsoLEs Everett E. Murphy, Newburyport, Mass., assignor to United Shoe MachineryCorporation, Paterson, N L Jg, a corporation of New Jersey Application May 19, 1933, Serial No. 671,883

` `24 claims. (01.12-146) -This invention relates to insoles and to methods of making insoles and is herein illustrated l attaching cement has set.

with reference to the manufacture of shoes having uppers secured in lasted position by cement.

In the manufacture of shoes in which uppers are secured in lasted relation to insoles by cement it is desirable that the insole be provided with a strong and substantially rigidV rib or lip to whichY the upperv may be'temporarily secured to hold the upper in lasted position during the setting of the cement by which the upper is permanentlyV attached to the insole.` The lip should be strong enough to withstand the outward tensions of the upper after it has been secured to the lip by metal fastenings or otherwise, thereby insuring that the lip will not tear orpull away from the outer face of the insole before the upper Moreover, it is of great advantage in this.' type of work to have the rib or lip so disposed relatively to thefouter face of the insole that it will have a tendency to turn inwardly away from the feather portion ofl the insole and thus assist in holding the upper tightly in lasted position while the cement is setting.

Objects of the present invention are to provide an improved insole which will be especially adapted for use in-the manufacture of a shoe having its upper lasted by cement and to provide an improved method by which such insole may be produced.

One aspect of the invention comprises an improved insole, preferably of leather,` which, as illustrated herein, is provided with a rib or lip formed from material integral with the insole and'folded lover upon itself to produce a double or two-ply lip.' As' illustrated, the lip is located at the inneredge of the vfeather portion and eX- tends substantially from the toe to the heel breast line, the continuity of the lipl being broken at the toe end of the insole-` Preferably, and as illustrated, thev lip is inclined inwardly toward the outer face ofthe insole so` that it will resist Y being brought into an upright position, thus cans Y lip may, if desired, have stiffening material such asshellac thereon to render the lip more resistant i `to outward bending in response to the tension of the upper after the latter has beensecured to the lip.

In another aspectthe invention comprises an Y improved method of making insoles which, as

illustratedherein,` consists in providing an insole from the edge face of the insole a distance. approximately equal to the feather portion thereof, thereby reducing the feather portion and forming a single` continuous outer layer or channell flap. An adhesive may, if desired, beappli'edto 5r.

the upper surface of the Yiiap and the flap is then turned back upon itself to form a double layerl of? material which is about half as wide `as` the feather portion of the insole. VThe doublelayer of the ap is then turned upwardly andinwardly 10;

against the outer face of the insole and set in" such position, thereby producing an inwardly inclined lip of double thickness. Preferably, the feather portion of the insole is reduced an amount somewhat less than the thickness of th`e`v`upper15.,

materials to beused so that `a relatively thin channel flap will be formed which, when folded over upon itself, will produce a strong double lip that is about halfV as Wide as the feather portion" Y and at least as thick as the upper materials which-20 are to be secured thereto. As stated, the outer face of the double lip may, if desired, be treated with a stiifening solution Ywhich will penetrate into the two layers of material and thus stiien the lip and render it more resistant to Aoutward 25, i

bending. i

The above and other aspects of the inventiony will appear more fully from the following detailed description when read in connection with theaccompanying drawing and will be thereafterow` pointed out in the claims.

In the drawing, s

Fig. 1 is a side elevation of a portion of a lipturning machine arranged to carry out the present invention; i` 1:

Fig. 2 is a plan view of the mechanism shown in Fig. 1 with the lower portions of the machineomitted;

Fig. 3 is a side elevation partly in section of' the upper portion of the lip-turning machine 40 shown in Fig. 1 with the parts ina different poa sition;

Fig. 4 is a fragmentary view of the outside channel forming instrumentalities of a channel` i being shown brokenoif and in section;

, Fig. 5 is a fragmentary view showing only the work-engaging ends of the lip forming instrumentalities of the lip-turningmachine, the parts ing machine operatingupon an insole, the insole` being shown operating upon the outer portion 50,

of the channel flap;

Figs. 6, '7, and 8 are views similar to Fig. 5 illustrating further steps in the lip forming operation; andv Fig, `9 is. a transverse sectional view of a pore-65; g

f table I6 with one edge against an edge lgage Il. l

tion of the insole showing the lip after the lipforming operations have been completed.

In practicing the method illustrated herein a channel is rst formed around the periphery of a relatively thin insole Ill, (Fig. 4) preferably a leather insole, to form an outer layer or flap I2 which terminates at about the heel breast line. The channel cut extends inwardly fromthe edge 'face of the insole in a plane substantially parallel to its lower face, thereby separating the outer layerl or flap I2 from the body portion or inner layer of the insole and leaving a reduced feather portion I4 the upper surface of which is parallel to the inner face of the insole. The channel extends inwardly from the edge face of the insole a distance equal to the amount it is desired to have the shoe upper overlap the margin of the insole, this distance usually beingV from three-eighths to a half inch at the forepart of the insole and becoming somewhat greater at the portion of the shank adjacent to the heel breast line in order to allow for the width of the wings of' a counter. The channel cut is preferably spaced from the outer face of the insole a distance somewhat less than the thickness of the upper materials to be used in the shoe in order to provide a relatively thin channel flap. This distance may, however, be greater in cases where no filler is to be applied to the shoe bottom prior Yto the attachment of an outsole.

The channeling operation may be performed,

for example, with the aid of a sole-channeling ing instrumentalities cooperating therewith which are adapted to operate on the feather or marginal portion of an insole. Figl illustrates the work engaging portions of the outside channel forming. instrumentalities of the machine operating on'the insole I0 and will give a good idea of how the outside channel is made. As shown, the insole is supported on a Work-supporting Ihe insole is fed along the table by a presser v`foot I8 which is mounted in an oscillatory carrier (not shown) and which, during the feeding movement, presses yieldingly against the insole to grip the portion which has just been cut between the presserfoot I8 and an edge knife 2E! which is also mounted on the carrier directly below the presser foot. On the forward stroke of the oscillatory carrier the insole is fed along the table I6 and, on the backward strokei a work retainer or bearing foot 22 moves downwardly against the insole to hold the latter stationary while the presserfoot I8 and the edge knife 20 move backwardly to their original positions, the

Vpresser foot at this time being raised from engagement With/the insole. It is during this rearwardV movement of `the carrier that the edge knife 20 performs its function of cutting a slit inthe feather portion of the insole to form the outside channel. Y

After theinsole I0 has been provided with an outside channel which extends around the periphery of the insole substantially from breast lineto breast line, to form the channel nap I2, the next step in the method consists in utilizing Y the single channel nap to produce a Vlip or rib on the outer face of the insole which will be strong enough to serve as a means for holding Afacilitate operating upon the single channel flap l2 to form the lip or rib, that portion of the flap which is located at the toe end of the insole is snipped off by a reciprocating cutter extending across the toe portion of the insole at a distance from its end equal to the width of the reduced feather portion I, the downward movement of the cutter being limited so that it will not cut into the body of the insole. In this way a space is provided which separates the channel flap at the toe end of the insole.

The insole It is now ready for the formation of a rib or lip along each margin of its outer face, these lips to be of double thickness and to extend from the toe end of the insole substantially to the heel breast line. The manner in which the insole lips are formed is illustrated in Figs. 5 to 9, inclusive, and the mechanism with the aid of which the steps of the method are accomplished is illustrated in Figs. l to 3. This mechanism is illustrated herein as embodied in a lip-turning machine of the type disclosed in United States Letters Patent No. 638,010, granted November 28, 1899, upon an application led in the name of John B. Hadaway. The construction and operation of this machine are well known to those skilled in the art and, since reference may be had to the patent mentioned for a full disclosure thereof, only those parts of the machine which have a direct connection with the present invention have been illustrated in the drawing.

As shown and described in the patent mentioned above, the lip-turning machine is provided with a horizontal drive shaft 24 (Fig. l) having mounted thereon a worm 26 which, through gear- 4J ing 28 and 30, drives a vertical shaft 32 and an inclined shaft 34 which carry respectively at their upper ends a rotatable work support 36 and a feed wheel 38. The feed wheel 38 is located at an angle above the work support 38 and the latter is spring-pressed upwardly against the feed Wheel, these members being rotated in opposite directions by the gearing 28, 30 so that the work, for example, an insole, will be gripped between the two members and thus fed along the upper surf ace of the work support. The lip-turning machine is also provided with a work gage 3S against which the edge face of the insole may be located as it is fed along the work support, thereby maintaining the insole always in proper relation to the lip-turning instrumentalities.

The lip turning instrumentalities comprise, in part, a lip-forming or -setting tool lli) and a slashing knife 42 carried by a holder 43 on the lower end of a slide member 44 (Fig. l). The slide member is mounted in an inclined guideway d6 formed in a portion of the frame and is reciprocated in the guideway by means of a link 48 which connects the slide member 4 to the upper end of an oscillating lever 50 actuated by an eccentric formed on the drive shaft 2li, as fully shown in the Hadaway patent referred to. A plow or lip-turning tool 52, adjustably mounted on the frame ofthe machine, is adapted to enter the channel in the insole as the latter is fed soV afoisaeo along the work support .fand to turn `up the channelflapinto apositi'on Fin which it vmay be acted upon `'by the meciprocating flip-'setting tool 40, the latter delivering .to the turned-iup Iportion of the flap-a 'series oflsharp :quick blows in rapid successionwhich weaken .thai-ihres of the flap .so that it -can lbe .bent .backwardly and downwardly against the youter face of the insole; As the turned-back portion of the 'flap -passes by the lipsetting tool 40 .it lcomes into engagement with a rubbing tool :54,;b.est shown in.Figs..2 and 3,'w`hich engages :thetfap and `further assists in maintaining :it .in its turned-'back position. During the pounding 'action .of .the lip-setting tool the slashing tool 42 makes aseries of small indentations i or cuts :along the outer edge of the turned-back portion of the. nap which also tends to weaken the fibres :and :thus 5to facilitate the lip-turning and -setting operations. As shown in Figs. 1 to 3, inclusive, fthe .lip-turning, setting` Iand slashing tools ,fare adjustable relatively .to each other so that they may be made-to operate `on insoles having dilferentssized channel naps and feather por tions `of varying` thicknesses,

Inrorder that the `lip-turning machine may be utilized for turning back the single channel flap |12 "of the insole in such 'a manner as to form a double vor `two-ply lip, vas 'hereinafter set forth, the machine 'has been provided with mechanism which Eisarranged to permit only a predetermined width of the Achannel flap to be turned up and backwardly into a substantially fiat position, this mechanism being then moved out of operative* positionso `that vthe insole may be `'fed through the machine again to turn up `the remaining portion of the llap and press it .backwardly against the outer face lof the insole. The :mechanism for accomplishing "this 'comprises a bracket 58 (Fig. 1). mounted above the guideway 46 and forming the :upper side of said guideway. The bracket :58 has la vertical wall 60 which extends upwardly from the vbase "of the bracket and at its :forward end supports a iixed horizontal stud 62 -which is held therein by a set screw 64. The stud -I-Z` forms the `pivot for a lever 66 which has adjustably secured to its forward end, 'by ra screw `longitudinally of the slide member 14. The central ,portion of the slide member `has an elongated opening Aformed therein in which is mounted a small compression spring 82. The upper end of the spring extends beyond the slide member 'I4 and engages the under side of a` forwardly extending arm of a small angle plate 84 which is fastened to the upper end of 'the carrier Vmember 'I2 by `a screw l86. It will be seen'from the` above description that the lip-controlling arm 'I6 is not Vonly adjustable longitudinally of the lever 66 `and lengthwise of the slide member 14, but that it is also free to yield upwardly in the carrier member I2 against the action of fthecompression spring 82 whenever pressure i-s exerted against the` lower end of the zarm. The downward movement of the lip-'controllingv -arm is limited by means of a screw `88 which extends through :a fslot in `the lower end ofthe slide 'I4.

The rearwardly extending arm of the lever '66 has formed on its end a horizontal boss L90 `(Fig.2)

provided with an opening 92 in which is slidably '15 mountedia spring-pressed plunger 94 having an enlarged head and shank portion which extends through :a smaller portion of the opening 92 and has pinned to its outer -end a hand nut 96 by which the plunger can be moved lengthwise of 10;

the opening. A compression spring 98 tends normally to :force the plunger to. the limit of its inward movement, `as viewed in Fig. 2, this limit being determined by the inner side of the hand nut 196. projection or knob 95 formed thereon which 'isV adapted to enter small .recesses |00, |02 l(Figs. f1 and 3) formed in the rear portion of the vertical wall 60, these recesses being located in predetermined positions heightwise o'f the wall. the` projection '95 on the plunger is positioned in the upper recess I the lip-controlling arm 'IB will 'have been moved downwardly to a position which is just above the work-supporting table 36 as shown in Fig. 1. trolling arm is adapted to cooperate withthe lipturning and lip-setting tools in forming raA double lip on the inso-le. When the projection 95 is located inthe lower recess |92, the lip-supporting arm will be raised away from the work table, as 309- shown in Fig. 3, and will be out of the way of the lip forming instrumentalities.

The lever 66 has a third arm |04 formed thereon which extends downwardly therefrom just below the fulcrum 62. pin |136 which projects forwardly, as viewed in Fig. V1, into a slot |08 formed in the upper extremity of an upwardly extending arm I i0 which is fixedly-secured to the end of a horizontal shaft H4 by a clamping screw I I2. tendsthrough a bearing in the central portion of the vframe and has 'the work gage 39 aforementioned secured to its other end by a screw ||6 which enters a threaded opening in the end of the shaft. The gage '39 projects forwardly or 45 toward the left, as viewed in Fig. 1, and is curved in such amanner that it will pass the inner edge of the work support 36 in close proximity thereto and thus be in a position toact as a gage for determining the position of the insole on'the work 50 support. When the lever 66 is moved from the position shown in Fig. 1 to the position shown in Fig. 3 by means of the spring plunger arrangement 94, the lower arm |94 of the lever 66 will `swing forwardly and will cause the upwardly extending arm I I9 to rotate the shaft lI I4 in a counterclockwise direction, thereby swinging the ledge gage 39, downwardly away from its operative position adjacent to the inner edge 'of the work support 36. In this way the lip-controlling arm 16 and the edge gage 39 are simultaneously moved into or out of operative positions merely by changing the position of the lever 66.

In the use of the machine in accordance with the method of making insoles disclosed herein, the insole ID `with the outside channel formed therein is mounted on the work supporting table 36 with the edge which is to be operated upon in contact with the edge gage 39, the lever 66 being 70 positioned as shown in Fig. 1 with the plunger 94 located in the upper recess |99 so that the lipcontrolling arm 'i6 will be close to the table and will thus `be in a position to bear yieldingly against the upper surface of v.the channel 4flap |'2 at a 75l The head of the plunger `94 has a small 15;

When 20..Y

In this position the con- 25 The arm |104 carries a horizontal 35` The shaft |14 ex- 4oV and downwardly by the force of the blows until point approximately midway between the inner and outer edges thereof. The work support 36, which, as stated, is urged upwardly by a compression spring during the lip forming operation, will force the edge of the insole against the feed wheel 3S. The machine is tripped and the insole is fed past the lip-turning instrumentalities so that the lip turning tool 52 can enter the channel slit at the heel breast line and cause that portion of 'the channel flap l2 which is in front of the lip-controlling member 76 to be turned upwardly and backwardly to an angle which is somewhat greater than 9G", or, in other words, so that it will be inclined inwardly of the feather portion of the insole against the forward surface of theV lip-controlling arm lt, as shown in Fig. 5. This turned-back portion of the channel fla which is substantially half of the full width of the flap, 'is now fed past the plow 52 and lipcontrolling member 76 and is engaged by the reciprocating lip-setting tool 4i! which delivers thereto a series of sharp quick blows, thereby substantially weakening the bres along the outer edge of the turned-back portion. The outer half of the channel ap is thereupon bent backwardly it lies closely against the upper surface of the inner half of the flap, as shown in Fig. 6. The slashing knife t2 also assists in the turning operation by making a series of small indentations or cuts in the flap, thereby weakening the fibres of the leather to such a degree that the outer portion of the flap will have practically no tendency to return to an upright position after the turning operation has been performed.

If cement or other adhesive has been applied to the upper surface of the channel flap it will now be tacky enough to cause the turned-back portion to adhere to the inner portion and the adhesion of these portions is further assisted by the rubbing tool 5@ (Figs. 2 and 3) which bears against the double thickness of material as the insole is fed along and presses the twolayers forcibly together, thereby insuring that a permanent cement bond will be obtained. If no adhesive is used the outer portion of the flap will be turned back substantially as described but will not, of course, adhere to the inner portion of the flap. The insole l is fed through the machine until the outer half of the entire channel flap I2 has been turned back in the manner described, thus forming a double layer of material around the periphery of the insole extending from breast line to breast line. Figs. 5 and 6 of the drawing show this step of the method, the lip-controlling tool E6 and lip-turning tool 52 having been left out of Fig. 6 in order to show more clearly the operation of the lip-setting and lip-slashing tools which are located rearwardly of the lip-turning and lipcontrolling tools.

Before the next step of the illustrated method is performed, the pivoted lever 58 is moved from its operative position, as shown in Fig. 1, to its inoperative position, as shown in Fig. 3, thus withdrawing the lip-controlling member 'F6 and the edge gage 39 from the positions in which they contact withthe insole Hl. The insole is placed again upon the work supporting table 36 and is held in such a position that, as it is fed along the work support 36, the lip-turning tool 52 will enter the inner portion of the channel and turn up the double thickness of material to the position shown in 7, lthereby forming an upwardly v and inwardly extending rib or lip l2El. It will be noted in Fig. 7 that theV edge gage 39 has been lowered from its operative position adjacent to the inner edge of the work support 36 so that the insole IIJ can now be located with its feather portion extending inwardly of the machine well beyond the inner edge of the work support, thereby permitting the feed wheel 38 to contact with the inner portion of the feather to feed the insole, and also permitting the lip-turning tool 52 to be in a proper position to operate on the double portion of the channel flap. As the turned-back portion of the double lip |20 passes by the lipsetting tool til, it is subjected to a series of sharp blows which bend the lip backwardly and force it downwardly against the outer face of the insole, as shown in Fig. 8. The slashing tool 42 again forms a series of small indentations along the outer edge of the lip which tend to weaken the fibres and thereby to cause the lip to remain permanently in an inwardly inclined position. After the insole has been fed completely through the machine so that the entire lip has been turned back in the manner described, the insole is removed and the lever 55 is again moved into the position shown in Fig. l, thus locating the mechanism in a proper 'position for operating on the next insole.

Fig. 9 shows a portion of the insole I0 in section after the lip turning operations have been performed. It will be noted in this figure that the double lip l23 does not lie perfectly flat against the outer face of the insole but is inclined inwardly in such a position that its inner side forms a sharply acute angle with the outer face of the insole. The above-described insole is particularly adapted for use in making a shoe having its upper secured in lasted relation to the insole by cement in accordance with the methods disclosed in Letters Patent of the United States No. 1,932,545, granted October 3l, 1933, upon an application led in the name of George Goddu and in an application Serial No. 576,342, filed Nov. 20, 1931 in his name. In practicing the methods referred to, a shoe upper is secured in lasted position against the inclined lip by metal fastenings, such as staples, while the cement is setting, the stapling anvil passing under the lower side of the lip so that the latter will be raised to an upright or substantially vertical position during vthe staple inserting operation. After the upper has been stapl'ed to the lip, a trimming operation is performed to remove the upstanding portion of the lip and the marginal portion of the upper which is securedA to the lip. The trimming cut may be made above the line of staples, thereby leaving the staples to assist in holding the upper in lasted relation to the insole, or, if desired, the cut may be made below the staples so: that they will be removed from the shoe bottom with the trimmed portions of the upper and lip and thus leave a comparatively smooth bottom surface on the shoe suitable for the attachment of an outsole.

Before the insole is utilizedin a shoe of the type referred to, the inclined double lip |20 may, if desired, be coated on its outer face with a stiffening solution such, for example, as that described in the Goddu application referred to, this solution being made up chiefly of shellac, alcohol and acetone. The stiffening solution will penetrate into the fibres of the leather and thereby impregnate the double lip in such a manner as to cause the lip to become relatively stiff and rigid when the solution has thoroughly dried.

Having thus described my invention, what I lclaim as new and desire to secure byy Letters Patent of the' United States is:

1., An insolehaving a lip thereon formed from a singl'e layer of material separated from the marginal portion of the insole, from its edge face inwardly and folded over upon itself to produce a lipY o'f double thickness.

2. An insole having an inwardly inclined double lip formed from a single continuous layer of material split inwardly fromthe edge face of the insole, said lip being integral with the insole.

3. An insole having an integral lip formed from a thin layer of material separated from the marginal portion of the insole from the edge thereof inwardly, said material being folded over upon itself and laid back against the outer face of the insole to produce an inwardly inclined Y double lip.

4. An insole having a folded-over lip which is composed of a single outer layer of material separated from the feather portion of the insole by a. cut passing through the edge face thereof, said lip being set against the outer face of the insole to produce an inwardly inclined double lip.

5. An insole having a reduced feather portion and a two-ply lip formed from a continuous layer of material separated from said feather portion.

6. An insole having a wide feather portion of reduced thickness' and an integral lip of double thickness composed of a single layer of material channeled from said feather portion, one thickness only of the double lip being joined to. the

insole.

'7. An insole having a reduced feather portion and an inwardly inclined double lip formed entirely from an outer layer of material of subwhich is integral with the insole and is substanstantially uniform thickness separated from said feather portion.

Y 8. An insole having a reduced feather portion and a folded lip of double thickness approximately equal in width to half the width of said feather portion, said lip being inclined away from said feather portion toward the outer face of the insole.

9. An insole having a reduced feather portion of predetermined width and an integral lip of less width than the feather portion, said lip beingV composed of two thicknesses of material one thickness only of which is joined to the insole and being set in an inwardly inclined position to cause it to resist being brought into an upright position.

10. An insole the feather portion of which is reduced by about one third, said insole having formed at Vthe inner edge of said feather portion an inwardly inclined rib of double thickness tially as thick as the reduced feather portion.

11. An insole having a reduced feather portion of predetermined width and a two-plylip at the imier edge of the feather which is about h alf as wide as said feather and is inclined inwardly to form a sharply acute angle with the outer face of the insole, the upper side of said Vlip being 'composed of a single continuous layer of materialseparated from themargin of the. insolelin order to reduce said feather portion.

`14. An' insole having a reduced featherportion 'of predetermined Widthand an uppergchannel flap the outer portion of which is folded over and secured toits inner portion and forms a double lip at the inner edge of said feather f portion.

15. An insole having a reduced feather portion and an inclined lip at the` inner edge of said feather portion, said lip being formed fromV a layer of material of uniform thickness `which is i0 integral'v with the insole and which is foldedV over upon itself and permanently secured in such positronto produce a lip of double thickness.

16. An insole having a reduced feather portion of substantial Width and an integral lip formed 115 from a layer of material separated from said feather portion, the outer half of said material being folded over and cemented to the inner half to produce a double lip.

l'. An insole having a reduced feather portion 20 of substantial width and an inwardly inclined two-ply lip located at the inner edge of said feather portion, said lip forming a sharply acute angle with the outer face of the insole and being the insole.

18. That improvement in methods of ,making insoles which consists in channeling in from thje edge face of an insole to separate an upper layer froni` a lower layer, turning the upper layer back upon itself to form a double layer, and turning the double layer back against the outer face of the, insole to form an inwardly inclined lip of double thickness.

19. That Vimprovement in methods of making l insoles which consists in channeling in from the 40 edge face of an insole in a plane parallel to its inner face, turning the outer iiap of the channel back upon itself to form a double layer of material, and turning said double layer back against the outer face of the insole to form an inwardly inclined double lip.

20. That improvement in methods of making insoles which consists in vapplying adhesive to the marginal portion of the outer face of an insole, cutting a channel inwardly from the edge face of the insole, said channel extending in a plane parallel to the inner face of the insole and separating the margin of the insole into a thin upper layer and a thick lower layer, turning the outer portion of said upper layer back against the inner portion thereof so that the adhesive will cause thetwo layers to stick together and form a layer of double thickness, and turning the double layer back and setting it against the outer face of the insole to form an inwardly inclined two-ply lip.

21. That improvement inmethods of making insoles which consists in applying adhesiveto the feather portion of an insole, separating said feather portion into an upper layer and a lower layer, the upper layer being about half as thick as the lower layer, folding theV outer half of the upper layer back and pressing it down flat against the inner half so that theadhesive will cause "10 the two portions to become permanently attached to each other, thereby forming a double upper layer which is substantially-as thick as the lowerV layer but only about half as wide, and folding the upper layer inwardly against Vthe surface of ther' insole to form an inwardly inclined double lip along the inner edge of the feather portion of lthe* insole.

- 22. That improvement in methods of making insoles which consists in applying cement to the outer face of an insole at the feather portion only, 'cutting an outside channel in said insole to form .an outer Vrchannel fiap whichV extends inwardly from the edge of the insole a distance equal to the feather portion thereof, thereby reducing said feather portion, turning the outer half yof the channel flap inwardly and pressing it down upon the inner half so that the cement will stick the two/portions together, thereby forming a double layer of material substantially equal in thickness .to thereduced featherportion of the insole, and

@bending said double layer back and setting it against the outer face of the insole, thereby producing a double lip which will tend to remain in i an inwardly inclined position.

23. VThat improvement in methods of making Vinsoles, which consists in applying cement to the feather portion of an insole, channeling said feather portion inwardly from the edge face of ,Y Athe' insolein a plane substantially parallel to its `W inner face to reduce said portion and to `form a -continuous outer channel flap of about half the f thickness of the remaining portion of the feather,

shipping 01T the channel flap across the toe end of the insole tov'separate the continuous flap into two parts, one being located along each margin ofso that the cement will cause the two portions of the flap to stick permanently together to form a double flap of substantially the same thickness as the reduced feather portion of the insole, turnin'g the double nap back'against the -outer face i5 of the insole to form an inwardly inclined double lip, and repeating the process on the flap located at the opposite margin of the insole.

24. That improvement in methods of making insoles which consists in applying cement to the 10i outer face of an insole along its marginal portion only, channeling into said-marginal portion inwardly from the edge face of the insole a distance sufficient to form a relatively wide feather, said channel being spaced from the outer face of the 152 insole a distance approximately equal to one third of the thickness of the insole, thereby forming a relatively thin channel flap, cutting off the channel flap at the toe end of the insole to separate it into two parts located at opposite 205 over against the outer face of the insole and set- 2 5;

ting it in such position to form an inwardly inclined double lip which will resist being brought into an upright position, applying a stiffening solution tothe outer surface of the double lip,

and repeating the process on the channel ap 30v located at the opposite margin of the insole.

EVERETT E. MURPHY.

Images