US2065463A

US2065463A - Shoe bottom member and method of making the same

Info

Publication number: US2065463A
Application number: US600921A
Authority: US
Inventors: John M Whelton
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1932-03-24
Filing date: 1932-03-24
Publication date: 1936-12-22
Anticipated expiration: 1953-12-22

Description

Dec. 22, 1936. J WHELTQN 2,065,463

SHOE BOTTOM MEMBER AND METHOD OF MAKING THE SAME Original Filed March 24, 1932 4 Sheets-Sheet l llll" //v \/5/\/ 70m 313% w m Dec. 22, 1936. J M WHELTON 2,065,463

SHOE BOTTOM MEMBER AND METHOD OF MAKING THE SAME Original Filed March 24, 1932 4 Sheets-Sheet 2 54 F g 70 Figrz nmuhmh Dec. 22, 1936. J, WHELTON 2,065,463

SHOE BOTTOM MEMBER AND METHOD OF MAKING THE SAME H Original Filed March 24, 1932 4 Sheets-Sheet 3 Dec. 22, 1936. WHELTON 2,065,463

SHOE BOTTOM MEMBER AND METHOD OF MAKING THE SAME Original Filed March 24, 1952 4 Shets-Sheet 4 Patentecl Dec. 22, I v

UNITED STATES PATENT OF'FICET SHOE BOTTOM MEMBER. AND METHOD OF MAKING THE SALE John M. Whelton, Peabody, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. 3., a corporation of'New Jersey Application March 24, 1932, Serial No. 600,921 Renewed October 14, 1935 32 Claims. (01.12-146) This invention relates to improvements in shoe breaks or bends as the shoe is'flexed in walking; bottom members and units and to improved the punching of apertures either in the reinforcmethods of and means for use in making the same ing member or in the insole, or otherwise recessand also to improvements in shoes and methods of mg one of said parts, for receiving a shank stifshoemaking. Although by no means limited fener and maintaining it against. lateral disthereto the invention in one of its aspects is hereplacement; the application of adhesive to one or in exemplified in itsapplication to the manufacboth of the insole members, i. e., to the insole itture of so-called cement process shoes and particself or the reinforcing member; and preferably ularly to shoes of that type having unusually narthe assembling of the insole members and the row shank portions and to themaking of reinshank stiffener, prior to the simultaneous molding 10 forced insole or shoe bottom members and units of said members upon the beforementioned form. for such shoes. As shown, a metallic shank stiffener is employedv In a copending application, Serial No. 577,297, which initially has a longitudinal curvature corfiled November 25, 1931, in the name of Karl Kilresponding to that of the bottom of a last for a burmthere are disclosed and claimed certain imshoe in which the insole is to be incorporated. 15 provements in shoe bottom'construction and im- After the insole and reinforcing member have proved methods of making shoes and shoe botbeen molded to the longitudinal curvature of the torn units, a purpose of which is to facilitate the last bottom and the reinforcing member has been lasting of the upper and the laying of the outsole overmolde'd transversely as above described the so as accurately to reproduce the lines of the last insole is transferred to the last. The molded in- 20 in the shank portionof a shoe. sole unit which, as hereinexemplified, is made Among other objects, the present invention aims very narrow in its shank portion for use in narstill further to facilitate the attainment of the, row shank shoes, may be tacked or adhesivelyabove result. secured to the last and, as illustrated, an upper To theaccomplishment of this object, as hereis mounted upon the last and its margins ce- 25 in illustrated, the present invention, considered in ment-lasted over the insole to bring their edges, one aspect, provides an improvementin methods. into substantially meeting relation in the narof making reinforced shoe bottom or insole units rowest portion of the shank of the insole, after in accordance with which a reinforced insole which an outsole, having a shank portion narmember, or at least one of the component parts .rower than the shank portion of the insole, is laid 0 of such an insole member, is initially overmolded and, adhesivelysecured to the overla'sted upper transversely in its shank portion to provide a: margins. As illustrated too, the reinforcing transverse, curvature in excess of that of the member may be applied to either side of the inbottom of the corresponding portion of a last to solo. but the shank stiffener in every case is ilwhich the member isto be applied so as to 'al lustrated as interposed between these parts so low for subsequent reaction or change of transthat no metallic element is present upon the outverse shape of the overmolded parts, and thus -er side of the insole to interfere with the operato facilitateconformance of the upper and outtionof lasting of the upper margins, or with the sole to thelines of the last. -As illustrated hereformation of a satisfactory bond between the 40 in, the initial overmolding is effected by the use insole and the upper margins or between the 40 of a form having a molding surface like that of upper margins and the outsole, such an arrangethe last bottom except that its transverse curvement being particularly advantageous in the ture is greater than that of the last bottom. manufacture of shoes the soles of which have ex- Moreover, as illustrated and hereinafter deeeptionally narrow shank portions as herein scribed, the pressure of the molding operation is shown. In accordance with an alternative meth- 45' utilized to secure an adhesivebond between the of operation, also illustrated herein, the desired insole d t reinforcing member. contour of the reinforced insoles may be obtained The illustrated method involves also the cutby initially molding the reinforcing member upon ting out of a reinforcing memberor heel and a form shaped to overmold the shank portion of shank piece of fibre, leather or the like, shaped the member transversely, transferring the molded 50 in marg nal contour to correspond to that ofthe reinforcing member to an unmolded insole upon heel and shankportions of a shoe bottom mema last, and thereafter moldingthe insole and seber or sole, for example, an insole and to have a I curing together the insole and the reinforcing front edge adapted to coincide with the break member by the employment, for example, of a line of the sole, i. e., the line along which the sole sole-laying machine of any well-known type. 55

Considered in another aspect the invention provides an improved shoe bottom unit resulting from the practice of the herein-described method.

The invention further consists in other novel method and structural features hereinafter described and pointed out in the claims.

In the drawings,

Figs. 1 and 2 are perspective views of an insole and a reinforcing member, respectively, used in the manufacture of the improved reinforced insole;

Fig. 3 is a plan view illustrating one method of cutting out the reinforcing member;

Figs. 4 and 5 are perspective views of the insole and the reinforcing member, respectively, as they appear after having been coated with adhesive for use in securing them together;

Fig. 6 is a perspective view of apparatus which may be used for applying the adhesive to the insole and to the reinforcing member;

Fig. '7 is a perspective view of a shank stiffener which is to be incorporated in the reinforced insole;

Figs. 8 and 9 are perspective views of the reinforcing member having a shank stiffener assembled therewith;

Fig. 10 is a section on the line X-X of Fig. 8;

Fig. 11 is a view in front elevation of an apparatus which may be employed for the purpose of molding the reinforced insole;

Fig. 12 is a plan view of a portion of the device shown in Fig. 11, illustrating particularly the means employed for relatively locating the insole and the reinforcing member and for locating said members relatively to the molding instrumentalities;

Fig. 13 is a cross-sectional view of the molding instrumentalities illustrating the manner in which they cooperate to mold an insole;

Fig. 14 is a detail sectional view taken along the line XIVXIV of Fig. 12;

Figs. 15 and 16 are perspective views of the reinforced insole showing respectively the upper and lower faces of the insole;

Fig. 17 is a detail sectional view taken along the line XVII-XVII of Fig. 16;

Fig, 18 is a perspective view of a reinforcing member which is of somewhat modified construction and which has been molded before being applied to an insole;

Fig. 19 is a cross-sectional view of a last to which a molded reinforced insole has been applied;

Figs. 20 and 21 are cross-sectional views similar to Fig. 19 but illustrating further steps in the manufacture of a shoe embodying the reinforced insole;

Fig. 22 is a perspective view of the upper side of a reinforced insole of modified construction;

Fig. 23 is a perspective view of this modified insole showing the lower side thereof;

Fig. 24 is a sectional view taken along-the line I XXIV-XXIV of Fig. 23; r

Fig. 25 is a longitudinal sectional view of a reinforced insole illustrating another modification;

Fig. 26 is a sectional view taken along the line xxvr-xxvr of Fig. 25; and

Fig. 27 is a longitudinal sectional view of aportion of a reinforced insole illustrating a still fur-- ther modification.

Referring to the drawings, the improved insole unit or reinforced insole 30, best shown in Figs.

15 and 16, comprises an insole proper 32, a re-- inforcing member, filler piece, or heel and shank piece 34 which may be made of any suitable moldable material, such as fiber, leatherboard or leather, and a metallic shank stiffener 36. Both the insole 32 and the reinforcing member 34 may -be out in any customary manner, for example,

they may be died out or they may be cut by a rounding operation. The cutting of the reinforcing member 34 by a rounding operation is herein illustrated in Fig. 3, wherein a knife 38 is shown in operative relation to a pattern 40 upon which the work is secured by means of a clamp plate 42. The same pattern and knife may be employed for cutting the insole 32, thereby insuring that both the insole and the filler piece shall be accurately cut to the same contour. The shank stiffener 36 consists of a narrow strip of resilient metal which is initially curved longitudinally to correspond to the curvature of the last to be used in making the shoe in which the insole unit is to be incorporated.

In the finished shoe it is desirable that the front edge 44 of the reinforcing member 34 shall bear a predetermined relation to, herein illustrated as coinciding with the break line of the sole, i. e., the line along which the sole bends or flexes when the shoe is used in walking. To insure the establishment of this relation between the front edge of the reinforcing member and the insole, as herein illustrated, a gage 46 (Fig. 3) is providedupon one side of the pattern 40 for engagement with the edge of a piece of stock, such as the stock 48, from which the reinforcing members are to be out. When insoles are to be cut the pattern 40 may be reversed so as to present its opposite face to the work and thus to prevent the gage 46 from interfering with. proper engagement of the pattern with the insole. In assembling the reinforcing member and the insole, the

reinforcing member, which was engaged with one side of the pattern while being cut may be made to coincide with the insole, which was engaged with the other side of the pattern by the simple expedient of reversing either the reinforcing member or the insole. Preferably, the marginal portion of the stock 48 from which the forward portion of the reinforcing members are to be cut is initially skived or beveled so that the front ends of the reinforcing members will be correspondingly beveled to avoid the formation of an undesirable ridge in the outsole.

In order to provide for convenience in assembling and securing the shank stiffener in place in the reinforced insole unit, two apertures 50 may be formed,=either in the reinforcing member or in the insole, for receiving the opposite ends of the shank stiffener. Preferably, and as herein illustrated, the apertures are provided in the reinforcing member and conveniently they may be formed by means of punches 52 carried by the clamp plate 42, the punches being arranged to cooperate with the pattern 40 in cutting the apertures.

The broader aspects of my invention relating to the above-described method of. assembling and securing the shank stiffener in place in the insole unit, and certain features of reinforced insole construction resulting from the practice of that method, constitute thesubiect-matter of my divisional application, Serial No. 78,690, filed May 8, 1936. f

Prior to the assembly of the shank stiffener with the reinforcing member both the reinforcing member and the insole are coated with adhesive and allowed to set long enough to render the adhesive in proper condition for securing the parts together. As herein illustrated, a coating of 7 latex isapplied to the insole 32 by means comprising a lower cement-applying roll 54 (Fig. 6), and an upper roll 56 arranged to cooperate with the roll 54 to feed the insole between the rolls. As shown, the roll 54 is arranged to dip into a. quantity of cement contained in a reservoir 58, the upper portion of the roll projecting through an opening 69 in a plate 62 which constitutes the top of the reservoir and which also serves as a table for supporting the work before and after it is acted upon by the rolls. Advantageously, the insole is fed in a lateral edgewise direction to the rolls and a gage 64 is arranged to engage the heel end of the insole to determine the longitudinal relation of the sole to the rolls so as to enable the cement to be applied only to the heel and shank portions of the sole. As shown, the gage 64 is capable of being adjusted to vary the location of the forward extremity of the coated area. By placing the insole on the plate 62 in the proper angular relation relatively to the axes of the rolls the operator may insure that the band of cement shall terminate in a line approximately parallel to the break line of the sole. The same apparatus may be employed for coating the reinforcing members and conveniently the reinforcing members may be fed endwise between the rolls. After being coated the insole and the reinforcing member appear as shown respectively in Figs. 4 and 5, the cement coatings being indicated at 66 and 68, respectively.

Before the filler piece and the insole are assembled, the opposite end portions of the shank stiffener 36 are inserted through the apertures 58 in the filler piece and the shank stiffener is adjusted longitudinally to bring its forward end into a desired predetermined relation to, herein illustrated as substantially flush with the forward edge 44 of the filler piece. The insertion of the longitudinally curved shank stiffener 36 imparts a corresponding longitudinal curvature to the filler piece 34, as shown in Figs. 8, 9 and 10. The shank stiffener 36 has struck up at its rear end a single pointed prong 10 which, during the molding of the filler piece and the insole, is pressed into the filler piece so as positively to hold the shank stiffener in place. Prior to the molding operation, however, the pressure of the pointed tip of the prong I0 against the filler piece serves to hold the shank stiffener against accidental endwise displacement.

The filler piece and the insole are now ready to be molded and secured together, and these operations are performed, as herein illustrated,

' by the co-operation of a rigid form I4 with a yieldable rubber pad I6 (Fig. 11). As shown, the form I4 isshorter than the full length of the insole and is adapted to operate upon the heel and shank portions of the insole and the rear portion only of the forepart. The upper or work engaging surface of the form has the same longitudinal curvature as that of the bottom of the last for the shoe in which the insole is to be incorporated. Transversely, however, the work engaging surface of the form is somewhat more sharply curved than the last bottom in order to provide for overmolding of the shank portion of the insole unit. Obviously, such overmolding of the shank portion of the insole could not be accomplished if the insole were to be molded upon the last. As shown in Fig. 13, the opposite sides of the form I4 are made flat to facilitate the use of gage members in connection with the form for locating the filler piece and insole relatively to the form. The use of a form such as the form I4 in place of a last as one of the mold members is further advantageous inasmuch as it avoids the tying upof a large quantity of lasts during the moldingof the insoles and thus avoids unnecessary interference with the normal process of manufacturing the shoes. In making the forms, it is necessary to use only a single last, the forms being gradedup and down from the single last.

As herein shown, the form I4 and the pad I6 are incorporated in a machine embodying certain novel features of construction particularly adapting it for use in applying the desired molding pressure.

The illustrated machine comprises a frame including two posts '78 (Fig. 11), a stationary head 80 which is fixed to the upper ends of the posts I8 and carries the pad 18, and a reciprocatory cross head 82 which is located beneath the head 80 and is mounted to slide on the posts I8 and which carries a block 84 for supporting the form I4. The pad I8 is secured to the under side of a carrier 86 which is mounted upon the head 88 with provision for horizontal sliding adjustment relatively to the form I4 in a direction lengthwise of the latter.. As shown, the carrier 86 is ar-,

ranged to slide upon a horizontal bar 88 fixed to the under side of the head 80, the bar 88 being received in a groove in the carrier 86 and being held in the groove by means of gibs 98 which overlie the opposite lateral margins of the bar and serve to support the weight of the block and the pad. A set screw 92 threaded in the carrier 86 is arranged to engage the edge of the bar 88 to secure the carrier 86 and the pad I6 in adjusted position with the contoured lower surface of the pad adapted to register with the correspondingly contoured upperv surface of the form I4.

The block 84 is provided with a flat upper face 96 which serves to support the form I4 and the form is held in place on the block 84 and positioned lengthwise relatively to the pad 16 by means of a post 98 on the block which is arranged to enter a hole I08 in the under surface of the form. The block 84 is pivotally connected to the crosshead 82 so that the form may adjust itself into the proper angular positionto insure full surface engagement of both the form and the pad with the reinforced insole. For-this purpose the crosshead 82 is provided with two spaced uprights I04 which are forked at their upper extremities to receive studs I86 carried by the block 84. The uprights I04 are provided also with lugs I 88 which are apertured to receive the posts and thus to afford the sliding connection between the crosshead and the posts. The amount of tilting adjusting of the block 84 and the form I4 about the common axis of the studs I06 is limited by means of set screws H8 and H2 which are threaded through lugs II 4 on the block and are arranged to engage opposite sides of the crosshead 82, suitable lock nuts II6 being provided to secure the set screws in adjusted position. The studs I I8, I I2 may be relatively adjusted to cause either the heel or forepart of the shoe bottom member on the form to be first engaged by the pad and thus to cause the molding pressure to progress lengthwise of the work in either direction as may be ed'to engage opposite lateral portions of the heel f at the heel end of the form. The yoke II8 projects upwardly above the upper surface of the form in order that it 'may function also to locate the filler piece and the insole with the edges of the latter in vertical alinement with the sides of the form. In order thatthis upwardly projecting yoke shall not interfere with the downward movement of the pad the yoke is mounted with provision for vertical yielding movement relatively to the block 84. The yoke H8 is also capable of being adjusted in a direction lengthwise of the form in order to accommodate forms of different sizes. To permit the above-described vertically yielding movements and horizontal'adjust- 'ment of the yoke N6 the latter is secured to a slide I20 (Fig. 12) mounted in vertical guideways I22 in a block I24 carried at the outer end of a horizontal stud I26 (Fig. 11) which is slidable in a bore I28 in the block 84. A stud I30 projecting from the block 84 extends between lugs I32 carried by the block I24 to prevent the latter from turning about the axis of the stud I26. The slide I20 is acted upon by a spring I36 arranged to hold the slide normally in an upper position determined by engagement of the upper end of the slide with an adjustable abutment I38 carried by the block I24. Horizontal adjustment of the block I24 for the purpose of locating the yoke I I8 in accordance with. the size of the form is efiected by means of a hand screw I40 the shank portion of which is threaded within a bore in the stud I26 and which is confined against longitudinal movement by means of a plate I42 one side of which is engaged by the head of the screw and the other sideby means of a collar I44 on the screw. The crosshead 82 is adapted to be reciprocated to move the block 84 and the form I4 toward and from the pad 16 by any suitable means not herein shown.

Provision is also made for locating the insole 32 relatively to the form I4 and for locating the reinforcing member 34 relatively to the insole and the form. For this purpose the yoke II8 which engages the heel portion of the form to determine the angular position of the form upon the block 64, is arranged, as hereinbefore described, to engage also the edges at the heel ends of the insole and reinforcing member to locate these parts lengthwise relatively to the form and to center the heel portions thereof. relatively to the form. In order to determine the angular relation of the insole and the reinforcing member to the form and to aline their edges with the edges of the form a pair of relatively short gage fingers I50 is provided for engagement with the opposite lateral edges of the sole and the reinforcing member, at the rear of the shank portions of the latter, and a pair of relatively long gage fingers I52 is provided for engaging the opposite lateral edges of the insole and the reinforcing member at the narrow forward extremities of the. shank portions of the latter. The gage fingers I50 are pivoted upon vertical studs I56 which are carried by the vertically yieldable block I24 and the gage fingers I52 are also pivoted upon the studs I56 beneath the fingers I50, the arrangement being such that the members of each pair of gage fingers are adapted to swing horizontally toward and from each'other. Each of the gage fingers I50 is provided at its free extremity with vertically elongated work engaging surfaces I58 adapting the fingers to engage not only the edges of the insole and reinforcing member but also to engage the sides of the form. The short gage fingers I50 are also provided with lips I60 which project inwardly beyond the surfaces I56 to overlie the work and positively hold it In close engagement with the bottom of the form. Rarward extensions I62 of the short gage fingers I50 are adapted to be grasped and moved toward each other by the operator-for the purpose of separating the work engaging extremities of the fingers to facilitate the placing of the insole and the reinforcing memberupon the form. Downward extensions I64 of the-free extremities of the fingers I50 are arranged to engage the long gage fingers I52 to separate the latter when the short fingers are separated as above described. A spring I66 connecting the short gage fingers I50 and a similar spring I61 connecting the long gagefingers I52 normally hold the gage fingers in position to perform their gaging functions, the operative positions ofthe gage fingers being determined by engagement of the free extremities with the opposite sides of the form.

The gage fingers I50 and I52 and the yoke H8 being mounted upon the vertically yieldable block I24 are capable of being depressed to avoid interferenoe with the operation of the pad I6 when the latter is lowered to apply molding pressure to the work. For the purpose of depressing the yoke H8 and the gage fingers a vertically adjustable abutment III) is carried by the pad block 86 and arranged to engage one of the pivot studs I56. While the gage fingers and the yoke are being thus depressed, inclined cam surfaces I12 (Fig. 14) at the extremities of the fingers I50 serve, by engagement with the edges of the reinforcing member, to separate these gage fingers sufficientlyto withdraw the lips I60 from their overlapping relation to the reinforcing member, thereby exposing the entire upper surface of that member for engagement with the pad I6.

The above described apparatus is not claimed herein, the same being disclosed and claimed in a continuation application, Serial No. 701,814, filed December 11, 1933.

In the use of the above-described apparatus, after a form of the proper size has been placed in position upon the block 84 the operator separates the gage fingers I56 and I52 by grasping the extensions I62 of the fingers I50 and then places an insole upon the form withthe coated surfaces of. the insole uppermost and thereafter places a reinforcing member upon the insole with the coated surface of the reinforcing member lowermost, care being taken to engage the rear edges of both the insole and the reinforcing member with the yoke H8. The operator then releases his grasp upon the extensions I62 of the fingers I50 whereupon both sets of fingers I50,

. I52 are moved inwardly by their springs I66 and I6! until they engage opposite sides of the form I4. The insole and the reinforcing member will then eachbe positioned with its opposite edges alined with the opposite sides of the form. The machine is then operated to cause the pad I4 to descend and apply pressure to the work and thereby to secure the insole and the reinforcing member together and to mold them to the contour of the form. Preferably the form may be shaped to overmold the shank portions of the insole and reinforcing member transversely to such an extent that when the molding pressure is subsequently released and the insole has been perthe appearance of the reinforced insole after it" has been molded is Shown in Fig. 15.

Upon release of the molding pressure the reinforced insole is removed from the molding machine "and the opposite lateral edges along'the shank portion of the insole are reduced by any suitable means not herein shown to provide the beveled'surfaces indicated at I80 (Fig. 16), the angle of bevel being such as to blend with the profile of the last.

While both the reinforcing member and the insole may advantageously be overmolded transversely as above described it may in some instances be desirable to overmold only one of these parts, for example, the reinforcing member and subsequently, after the overmolded member has reacted so that its transverse curvature is the same as that of the last which is to be employed, to assemble upon the last the initially overmolded member and the other member,.for example, the insole, and to utilize the pressure applied during the performance of a customary sole laying operation to effect the requisite molding of theinsole and the securing together of the insole and the reinforcing member. In carrying out such a practice/and particularly if the initially overmolded part is composed of fiber or leatherboard,

- it has been found that the fiber or leatherboard member, after being adhesively secured to the even though one of the elements constituting the unit has not been overmolded. Fig. 16 shows a unit comprising a reinforcing member 34 which has been overmolded upon a form, such as the form 14, and which has a shank stiffener 36 as sembled therewith. A novel shoe bottom unit has thus been produced comprising a reinforcing member and a shank stiffener in which the reinforcing member has been molded both longitudinally and transverselyto produce a surface contour corresponding to that of the bottom and last to be employed in the manufacture of a shoe in which the shoe bottom unit is to be incorporated.

The reinforced and molded insole or shoe bottom unit is now ready to be placed upon a last L upon which the shoe is to be made. The insole unit is tacked to the last in the usual manner (the insole being shown in Fig. 19 as it appears after being tacked to the last) and, as shown in Figs. 20 and 21, an upper U is cement-lasted over the insole unit, staples I82 or other suitable fastenings being employed to secure the upper to the insole during the drying of the cement. Because 'of the fact that the shank stiffener is located between the reinforcing member and the insole it will not interfere with the driving of the staples or other fastenings. In the narrow shank portion of the shoe, as herein shown, the 'overlasted upper margins substantially meet and inasmuch as there is no metallic stiffener located upon the outer surface of the insole a satisfactory bond will be obtained between the upper and the insole throughout the full width of the latter. Subsequently, when an outsole Oislaid and secured by cement to the overlasted upper margins, as shown in Fig. 21, a perfect bond will be obtained between those elements throughout the full width of the outsole, even if the shoe has the particularly narrow or so-called fiddle shank formation shown in the drawings. g

In Figs. 22, 23 and 24 there is shown a modified reinforced insole construction in which the insole.

320 is provided with a lip I86 to which the upper of the shoe is to be stapled to hold the upper in place during the drying of cement employed for United States Letters Patent No.- 1,932,545, granted October 31, 1933, upon application of George Goddu. The particular lipped insole herein showmhowever, embodies an improved lip construction disclosed in United States Letters Pat-,-

ent No. 2,017,856, granted October 22, 1935, upon application of George Goddu.

In the manufacture of this modified reinforced insole unit, the reinforcing member is applied,

" as shown at 3&9, to the upper or grain sideof the insole sothat, instead of being located between theinner and outer soles of the finished shoe, it will be located at the upper or innerside of the inner sole where, in the absence of a sock the wearer. In an insole of this type, moreover, it is convenientto punch the'shank stiifenerreceiving apertures in the insole instead of in the re inforcing member, .as indicated at 590. The opposite ends of the shank stiffener 36 will, in this instance, be threaded through the apertures 500 in the insole, thus causing themain portion of the stifiener to be located between the insole and the reinforcing member as in the form of insole here= inbefore described. The modified reinforcedainsole construction shown in Figs. 22, 23 and 24 and the improved method practiced in making such an insole is not claimed herein, the same being part of the subject-matter of a continuation application, Serial No. 81,055, filed May 21, 1936.

Instead of securing the shank stiifener in place by inserting its ends throughapertures either in the insole or in the reinforcing member the stiffener may be secured in place by tacks, the

"tacks, for example, being driven into the reinforcing member as indicated at 986 in Fig. 25, whereina stiffener 360 is' provided-the stiffener being fittedwiththe-usual'tack holes by having no attaching prong. To insure that the stiffener 860 shallhave no tendency to produce an undesirable bulge or ridge in theoutsole a shallow groove I88 may be formed in the reinforcing I member to receive it as shownclearly in Fig. 26.

It may be desirable to mold the reinforcing member 'by the use of the form E98 (thereby unit comprising only a reinforcing member and 'a shank stiffener as shown in Fig, 18.

In the use of such a'shoe bottom unit. afterassembly of the unit with an insole upon a last bottom, the insole may be molded and adhesively secured to the reinforcing member by the use of a 'sole laying machine of customary construction, after which the usual shoemaking operations may beperformed to complete the In practicing the above modification of.

shoe.

lining, it will be, directly engaged by the foot of so I the hereinbefore-described method of shoemaking the adhesive attachment tothe insole of the previously overmolded reinforcing member will effectively prevent the insole from reacting upon release of the insole molding pressure and thus the insole will permanently retain its transverse-f may be provided in the reinforcing member 34 for receiving the rear end of the shank stiffener 36 and an open notch or recess 50I may be pro-- vided in the forward edge portion of the reinforcing member for receiving the front portion of the stiffener. The provision of the notch or recess 5! will permit the front portion of the stiffener 96 to lie with its opposite sides substantially flush with the corresponding sides of the reinforcing member and thus to avoid the formation of any bulge due to the thickness of the stiffener in the immediate vicinity of the break line of the sole. As clearly shown in Fig. 18 the construction of the recess or notch SM is such that the forward portion of the reinforcing member 34 is forked and the forward extremity of the stiffener 36 lies between the forwardly projecting portions of the reinforcing member which constitute the "arms of the fork.

A lipped insole of the type shown in Fig. 23 may be split from its heel end forwardly to a point in the vicinity of the ball line to form upper and lower sections or flaps, and between these sections may be disposed a molded reinforcing unit comprising a longitudinally arched shank stiffener and a reinforcing member made preferably of means of adhesive to the sole sections I90 and I92. The reinforced insole construction shown in Fig. 27 is not claimed herein, the same being part of the subject-matter of a continuation application, Serial No. 82,283, filed May 28, 1936.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

v 1. That improvement in methods of reinforcing 'insoles which consists in forming a reinforcing member for the heel and shank portion of an insole molding said reinforcing member to a longitudinal contour corresponding to that of the bottom of the shank portion of a last while overmolding the reinforcing member transversely to compensate for reaction of the molded material in such a manner that ultimately there will be imparted to the reinforcing member a crosssectional contour accurately conforming to that of the bottom of the last, and simultaneously with said molding operations securing the reinforcing member to an insole.

2. Thatimprovement in methods of reinforcing insoles which consists in cutting out an insole, cutting out a reinforcing member for the heel and shank portions of the insole, assembling a shank stiffener with one of said parts, overmolding said part to compensate for reaction of the molded material so as to impart to said part an ultimate contour accurately conforming to that of the bottom of a last for a shoe in which the insole is to be incorporated, and securing the reinforcing member and the insole-together with the shank stifi'ener interposed between.

3. That improvement in methods of making reinforced insoles which consists in cutting out an'insole, cutting out a reinforcing member for the heel and shank portions of the insole; re-

cessing one of said parts to receive a shank stiffener and hold the stiffener against lateral edgewise displacement relatively to said part, assembling a shank stiffener with said part, overmolding said part to compensate for reaction of the molded material so as to impart to said part an ultimate contour accurately conforming to that of the bottom-of a last for a shoe in which the insole is to be incorporated, and securing said parts together with the stiffener interposed between them.

4. That improvement in methods of making reinforced insoles which consists in cutting out a full length insole, cutting out a reinforcing member to impart thereto a marginal contour corresponding to that of the heel and shank portions of the insole, recessing said reinforcing member to receive a shank stiffener, assembling a shank stiffener with said reinforcing member, securing said reinforcing member to said insole with the shank stiffener interposed between the reinforcing member and the insole, and beveling the lateral edges of the shank portions of both the reinforcing member and the insole.

5. That improvement in methods of making reinforced insoles which consists in cutting out a full length insole, cutting out areinforcing member to impart thereto a marginal contour corresponding to that of the heel and shank portions of the insole, recessing said insole to receive a shank stiffener, assembling a shank stiffener with the insole,.securing the insole to the reinforcing member with the shank stiffener interposed between them, and beveling the lateral edges of the shank portions of both the reinforc ing member and the insole.

6. That improvement in methods of making reinforced insoles which consists in cutting out an insole, cutting out a reinforcing member for the heel and shank portion of the insole, forming a shank stiffener receiving recess in at least one of said parts, applying a coating of adhesive to at least one of said parts, assembling said parts with a shank stifiener interposed between them and located in said recess, and molding the insole and reinforcing member to arch them transversely while utilizing molding pressure to secure them together.

7.. That improvement in methods of manufacturing reinforced insoles which consists in cutting a piece of stock to an outline determined bya pattern to produce an insole, utilizing the same pattern in cutting another piece of stock to produce a reinforcing member for the heel and shank portions of the insole and gaging the position of said piece of stock relatively to the pattern to locate the edge of the stock which is to constitute the front edge of the reinforcing member in a position to correspond to that of the break line of said insole, and securing said insole and said reinforcing member together with their rear .and lateral edges in alinement and with the front edge of the reinforcing member coinciding with the break line of the insole.

8. That improvement in methods of manufacturing reinforced insoles which consists in cutting out an insole, cutting out a reinforcing member for the insole having lateral edges of the same shape as those of the heel and shank portions of the insole and having a front edge arranged to coincide with the break" line of the sole when the lateral edges of the reinforcing member are alined with the lateral edges of the sole, applying a coating of adhesive to at least one of said parts, assembling with the reinforcbottom of a last for a shoe in which an insole is to be incorporated and positioning the shank ing member a shank stiffener longitudinally curved to correspond to the curvature of the stiffener with its front edge flush with the front edge of the reinforcing member, assembling the reinforcing member and the insole'with their lateral edges in alinement with the shank stif-J fener located between said parts, and molding said parts to adapt them to fit the'bottom of the last,

. 9. That improvement in methods. of manufacturing shoes of the type having an insole and a molded reinforcing member for'the shank portion of the insole which consists in preparing one of said parts to receive a shank stifiener-and to. maintain the stiffener against lateral displacev merit, assembling a shank stiffener with said part,

transversely overmolding at least one .of .said' parts and securing said parts together with the shank stiffener between them, lasting an upper to the insole, and completing the manufacture of theshoe. r 1

10. That improvement in methods of manufacturing shoes of the type having aninsole and a reinforcing member for the shank portion of the insole which consists in preparing one ofsaidf parts to receive a shank stifiener and hold it against lateral displacement, assemblinga shankstiffener with said part, transversely overmolding the-insole and the reinforcing member and.

securing said parts together with the shank stiffener interposed between them to'produce a reinforced insole unit, transferring the insole unit to a last, mounting an upper upon the last, last-'- ing'the upper margins to the insole, laying an 011115016, and rin the outsole to the overlasted upper margins.

11. That improvement in methods of manufacturing shoes which consists in securing to-- gether an insole, a shankfstiifener and a reinforcing member. to makea reinforced insole, molding the shankportion of the reinforced insole to impart thereto a transverse curvature greater than that of the last upon which the shoe incorporating the reinforced insole is to be made to allow for subsequent reaction'of the inside, and thereafter placing the reinforced and molded insole upon the last, lasting an upper and securing it to the insole, and completing the shoe in a customary manner.

12. That improvement in methods of making shoes which consists in transversely overmolding the shank portion of a reinforced insole to allow for subsequent reaction of the molded material, and thereafter applying the molded insole to a last, lasting an upper andsecuring it to the insole, and completing the shoe.-

13. That improvement in methods of making shoes having reinforced insoles which consists in cutting out an insole, cutting out a reinforcing member for the insole having lateral'edges of the same shape as those of theme] and shank portions of the insole, applying a coating of -adhesive to at least one of said parts, assembling said member and said insole upon a form having a molding face shaped like the bottom of alast for a shoe in which the insole is to be incorporated except that said faceis curved transversely to a greater extent. than the last bottom, ap-

plying pressure to said parts to mold them to fit the form and to secure them together to make a reinforced insole, releasing the molding pressure to permit reaction of the insole, transferring the insole to the last, lasting an upper over the insole, and completing the shoe.

14. Thatimprovement in methods of making shoes'which consists in assembling a shank stifyfener and a-reinforcing member for the shankv portion of an insole, 'molding the reinforcing member to impart thereto. a transverse curvature greater than that of the last upon which the shoe incorporating the reinforcing member is to be made to allow for subsequent reaction of thereinforclng member, assembling the molded rein-' forcing member with an insole upon a last, molding the insole to fit the last, and completing the shoe.

an insole to a last, placing the assembled reinforcing member and shank stiffener .upon the insole with the shank stiffener between said -16. I'hatimprovernent in methods of shank portion, a reinforcing member for the '15. That improvement in methods of making shoes which consists in cutting a reinforcing member to the marginal contour of. the heel and shank portions of an insole, assembling a shank Q stiffener with the reinforcing member, applying a shank stiifener with the shankjstiifener inter posed between the insole member and the rein-- forcing member, molding said memberstothe longitudinal curvature of a last bottom, thereafter assemblingsaid molded members with an upper on a last, lasting the upper and thereby bringing the -margins of the upper into substantially meeting relation in the .narrowestiportion' of the I shank of the insole, adhesively securing the upper margins to the insole, and adhesively securing to the overlasted upper margins an outsolehavlng a shank portion narrower than that of the insole. v

17. A shank stiffener unit comprising a reinsole, said member being arched both longitudinally and transversely and having a notchv extending rearwardlyfrom its front edge and an aperture spaced rearwardly from said notch, and a shank stifiener having one end extending into' said aperture and its opposite end located in said notch with its sides substantially flush with the surfaces of the reinforcing member.

18. A shoe bottom unit comprising an insole member, an elongated non-metallic reinforcing member secured to said insole member, both of said members being molded to arch them longitudinally to correspond to the longitudinal curvature of a last bottom and to arch them transversely an amount not less than that of the 45 forcing member for the shank portion of an intransverse curvature of the last bottom, one of said members having a recess at one side to receive a shank stiffener, and a shank stiffener seated in said recess with'the outer surface of the 'shank stiifener substantially flush with the surface of said member.

19. A shoe bottom unit comprising an elon- 7 gated reinforcing member molded longitudinally to impart a curvature thereto corresponding to the longitudinal curvature of a last bottom and overmoldedtransversely. to impart thereto a transverse curvature not less than that of said last bottom, said reinforcing member having an aperture therein, and an elongated stiffening element having a portion located in said aperture and held thereby against lateral displacement.

20. A shoe bottom unit comprising an insole, a reinforcing member for the heel and shank portions of the insole adhesively secured to the insole, the shank portions of the insole and the reinforcing member being molded longitudinally to fit a last and being overmolded transversely, and a longitudinally arched shank stiffener located between the insole and the reinforcing member, the reinforcing member being prepared to -receive the shank stiffener and hold it against lateral displacement.

21. A shoe bottom unit comprising an insole, a reinforcing member for the heel and shank portions of the insole adhesively secured to the insole, the shank portions of the insole and the reinforcing member being molded longitudinally to fit a last and being overmolded transversely, and a longitudinally arched shank stiffener located between the insole and the reinforcing member, the shank stiffener being countersunk within the reinforcing member. v

22. That improvement in methods of manufacturing reinforced insoles which consists in cutting out an insole, cutting out a reinforcing member for the insole shaped to coincide with the contour of the lateral edges of the heel and shank portions of the insole and having a front edge arranged to bear'a predetermined relation to the break line of the insole when the lateral edges of the reinforcing member are alined with the corresponding lateral edges-of the insole, assembling a shank stiffener with the reinforcing member and positioning the shank stiffener with its front edge bearinga predetermined relation to the front edge of the reinforcing member, and

thereafter assembling and securing together the reinforcing member and theinsole with their lateral edges in alinement and with the shank stiflener located between said parts.

23. That improvement in methods of making shoe bottom units which consists'in assembling an insole member, a shank stiffener, and a member for reinforcing the heel and shank portions of the insolemember, said reinforcing member having a recess in its shank portion and said shank stiffener being positioned with its body portion interposed between said insole member and said reinforcing member and with one end portion located in said recess, and thereafter adhesively se curing the shank portions of said insole and said reinforcing member together and molding said shank portions both longitudinally and transversely to conform to the longitudinal and transverse curvatures, respectively, at the bottom of a last.

24. A shoe bottom unit comprising an insole member having a longitudinally and transversely molded shank portion, a member for reinforcing the heel and shank portions of said insole member having a recess in its shank portion for receiving a shank stiffener, said reinforcing member having its shank portion longitudinally and transversely molded to conform toth'e molded shank portion of said insole member and said members being adhesively secured together, and a shank stiffener having its body portion interposed between said membersand having one end portion located in said recess.

25. That improvement in methods of making reinforced insole units as articles of manufacture which consists in cutting out an insole, cutting out a reinforcing piece for the heel and shank portion of the insole, applying a coating of adhesive to at least one of said parts, assembling said parts with a shank stiffener interposed between them, molding the shank portions of the insole and the reinforcing piece to arch them both longitudinally and transversely while utilizing the molding pressureto secure them together, said molding operating including an overmolding of said portions to compensate for reaction of the molded material, and thereafter beveling the l opposite lateral edges of the shank portions of the insole and the reinforcing piece.

26. That improvement in methods of manufacturing shoes which consists in securing together an insole, a shank stiffener and a heel and shank reinforcing piece to make a reinforced insole unit,

- molding the shank portion of said unit to arch the same both longitudinally and transversely, said molding operation including an overmolding of said portions to compensate for reaction of the molded material, beveling opposite lateral edges of the shank portions of the insole and the reinforcing piece, and thereafter placing the molded insole unit upon a last, lasting an upper and securing it p to said unit, and completing the shoe. I i

27. A shoe bottom unit comprising an insole, a reinforcing member for the heel and shank portions of the insolesecured by means of adhesive to the insole, the shank portions of the insole and piece.

28. A shoe bottom unit comprising an insole, a reinforcing member for the heel and shank portions of the insole secured by meansof adhesive to the insole, the shank portions of the insole and the reinforcing member being molded longitudinally to conform to the longitudinal curvature of the bottom of a last and being overmolded transversely, and a longitudinally arched shank stiffener located between the insole and the rein forcing member, the forward portion of the reinforcing member being'forked thereby providing a notch, and the shank stifiener having a part of its rear portion embedded in the reinforcing piece and having its-front portion located within said notch.

29, That improvement in methods of making reinforced insoles which consists in cutting out an insole, cutting out a reinforcing member having the same outline as the heel and shank portions of the insole, forming two apertures'in the reinforcing member spaced apart lengthwiseofsaid member, applying a coating of adhesive to the reinforcing member and to the heel and shank portions of the insole, assembling a shank stiffenerwith the reinforcing member by inserting an insole, cutting out a member for reinforcing the heel and shank. portions of the insole and forming apertures in said reinforcing member for receiving the opposite ends of a shank stiffener, inserting the opposite ends of a shank stiffener through the apertures in said reinforcing member assembling the stifiened reinforcing member and the insole with adhesive between them, and applying pressure to the assembled parts to secure them together and at the same time molding the shank portions of" the reinforcing member and the insole to arch them longitudinally to correspond to the longitudinal curvature of abottom of a last and to overmold them transversely to compensate for reaction of the molded material.

31. A shoe bottom unit comprising an insole and a reinforcing member secured by means of adhesive to the heel and shank portions of the insole and having two apertures spaced apart lengthwise of the reinforcing member, and a shank stiffener located between the reinforcing member and the insole and having its opposite end portions confined within said apertures, the shank portions of theinsole and the reinforcing member being molded longitudinally to fit a last and being overmolded transversely.

32. That improvement in methods of making reinforced insoles which consists in securing together an insole, a reinforcing piece for the shank portion of the insole, and a shank stiffener, and molding the reinforcing piece and the shank portion of the insole to impart thereto a longitudinal curvature corresponding to that of the shank portion of the bottom of a last for a shoe in which said parts are to be incorporated and a transverse curvature in excess of that of said last bottom portion to allow for change of transverse shape subsequently to take place in' said reinforcing piece and said insole portion.

JOHN M. WKELTON.

CERTIFICATE OF CORRECTION.

Patent No. 2,065,463. December 22, 1936 JOHN M. WHELTON.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5? second column, line 45, for the word "by" read but; page 8, second column, line 7, claim 25, for "operating" read operation; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of March, A. D. 1937.

Henry Van Arsdale (Seal) Acting Commissioner of Patents.