US2073025A

US2073025A - Shoe bottom unit and method of making the same

Info

Publication number: US2073025A
Application number: US681331A
Authority: US
Inventors: Walter W Prue
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1933-07-30
Filing date: 1933-07-30
Publication date: 1937-03-09
Anticipated expiration: 1954-03-09

Description

March `9, v 1937. I w. w. PRUE 2,073,025

SHOE BOTTOM UNIT AND METHOD OF MAKING THE SAME Filed July 2o. 193s wlmm Patented Mar.' 9, 1937 UNITED STATES PATENTv OFFICE I SHOE BO'r'roM UNIT AND ME'rnon or MAxxNG 'ma SAME Application July 20, 1933, Serial No. 681,331

22 Claims.

This invention relates to improved methods of making shoes and shoe bottom units and to improvements in shoes and shoe bottom units as articles of manufacture.

In United States Letters Patent No. 2,055,542, granted September 29, 1936, upon application of Karl Kilburn, and No. 2,065,463, granted December 22, 1936, upon application of John M. Whelton, there are disclosed and claimed certain improvements in shoe bottom construction and improved methods of making shoe bottom unitsa purpose of which is to facilitate the lasting of the upper and the laying of the outsole so as accurately to reproduce the lines of the last in the shank portion of the shoe.

Among other objects the present invention is concerned with further facilitating the attainment of the above results.

With this object in view the present invention, considered in one aspect, provides an improved method of making shoe bottom units which 'comprises assembling an unmolded insole memberI and a shank reinforcing piece with adhesive between the parts, said reinforcing piece having been previously arched both lengthwise and crosswise to conform to the bottom contour of the shank portion of a'last, and applying pressure to said parts to shape the shank portion of the insole member to conformto the lengthwise and crosswise curvatures of the shank-reinforcing piece and consequently of the last bottom and to secure said parts together in a manner permanently to retain the shape imparted to the insole member. As herein illustrated, the insole member is a full length insole which may be made of leather or a suitable leather substitute soling material. The illustrated reinforcing piece,

whichrmay be made of leatherboard, fiber or like material, is adapted to reinforce the heel as well as the shank portion of theinsole and is cut to correspond in outline to those portions of the insole. The reinforcing piece is preferably molded before assembly with the insole to conform to the bottom contourof the heel and shank portions of alast and, as illustrated, the reinforcing piece is secured to the upper (i. e., the last-engaging) surface of the insole, and a metallic shank stiifener is interposed between the reinforcing piece and the insole to maintain permanently the longitudinal curvature of the latter, the shank stiffener preferably being attached to the reinforcing piece before the latter is secured to the insole. The adhesive which is employed between the reinforcing piece and the insole is caused to unite those parts through (ci. srt-1s) pressure exerted by the hands of the workman who assembles the parts and, in order to insure that the parts shall be firmly secured together, one or more fastenings, illustrated as wire staples, may be driven through the shank portions of the insole and the reinforcing piece at opposite sides of the 'shank stiifener. These staples hold the marginal portions of the insole and the reinforcing piece securely together, the pressure applied to the assembled parts by the staple inserting instrumentalities supplementing the manually applied pressure to insure an even more effective adhesiver attachment of the parts in the shank portion of the insole unit. Preferably, and as illustrated, the metal shank stiifener is formed with a longitudinal rib or ridge which functions initially to produce a corresponding longitudinal ridge in the shank portion of the insole, the staples cooperating with the shank stiifener permanently to retain the ridge formation of the insole so that later, after the upper has been lasted and the outsole attached, the pressure applied to the outsole in the leveling operation will produce a corresponding ridged formation in the shank portion of the outsole of the shoe. It will be seen that, in accordance with the abovedescribed method of making a reinforced shoe bottom unit, the heel and shank portions of the unit will be shaped to conform to the bottom contour of the heel and shank portions of the last before theunit is applied to the last and without placing the unit in a mold or on a form and without subjecting it to heavy molding pressure. For the purpose of insuring against breaking down of the longitudinal arch of the insole unit while the shoe is being worn, provision is made, as herein illustrated, for enabling a fastener, such as a rivet, to be inserted through the outsole and through the shoe bottom unit in the forward portion of the shank of the shoe. To this end, as herein shown, a fastener-receiving aperture is provided in the forward portion of the shank stiffener and a corresponding aperture registering with the former is provided in the heel and shank reinforcing member. f

In -the manufacture of a shoe in which the above-described reinforced insole unit is employed as herein exemplified, the unit, after being assembled and shaped as already described. is secured to thebottom'of a last, an upper is pulled over and lasted to the insole, an outsole is laid, and the other usual operations are performed to complete the making of theshoe. Thereafter, the last is pulled and the rivet or other fastener is driven inwardly through the outsole and the insole and through the apertures in the shank stiil'ener and reinforcing piece and the inner end of the rivet is clenched against the inner face of'the reinforcing piece, thus rigs idly securing all these parts together in a, manner permanently to retain the longitudinal arch of the shoe bottom.

The invention further resides in improvements in shoes and in reinforced shoe bottom units resulting from the practice of the methods above outlined.

'Ihe invention will be explained with reference to the accompanying drawing, in which 'Fig. 1 is a perspective view of a reinforcing l5 piece constituting one of the elements of my improved reinforced shoe bottom unit;

Fig. 2 is. a perspective view of the reinforcing piece showing a, shank stiifener attached thereto; Fig. 3 is a perspective view of a completed shoe bottom unit embodying my invention, showing the upper side of the unit;

Fig. 4 is a perspective view of the unit show- `ing the lower 'or outsole-engaging side of the unit;

Fig. 5 is a longitudinal sectional view of-a shoe havingmy improved shoe .bottom unit incorporated therein; and

Fig. 6 is a sectional view taken along the line V'I-VI of Fig. 3.

'I'he improved shoe bottom or insole unit shown in the drawing comprises Ja full length insole I0, a reinforcing piece I2 for the heel and shank portions of the insole, and a shank stiffener Il. The insole I0 may be made of leather or any suitable leather substitute solin'g material and is cut to the required shape and size in any suitable manner as. for example, by a rounding or dieing-'out operation. The reinforcing member may be made of stiii' leather or iibreboard and is shaped to correspond substantially to the contour of the heel and shank portions of the insole. The shank stiifener Il is preferably made of metal and provided, as shown in Fig. 2. with a longitudinal sti'ifening rib or ridge I6. For use in shoes of dierent sizes it is, of course. necessary to cut the insoles in sizes to correspond with the sizes of the shoes. It is unnecessary, however, to provide a complete run o'f sizes of the reinforcing pieces on account of the relatively small change in shape in the heel and shank portions of an insole resulting from changes in .size of the insole. Accordingly, it is practicable to employ a single sizeof reinforcing piece for a run of several sizes of insoles, it being necessary to provide only three or four sizes of reinforcing pieces for use with a lot of insoles comprising an entire run of sizes. Thus, by selecting a reinforcing piece of a size appropriate for use with an insole of a given size the reinforcing piece @o will correspond as closely as is necessary to the shape of the heel and shank portions of the insole.

As indicated at I8 in Fig. 2, the forward portion of the reinforcing piece I2 is beveled, thereg5 by reducing its thickness so that it will conform readily to the abrupt break in the longitudinal curvature of the last bottom at the Junction of the shank and forepart thereof and producing a feather edge which will have no tendency to form an objectionable ridge in the insole. Preferably, the lateral edges of the reinforcing piece I2 are also beveled, as best shown at 20 in Fig. 6, to facilitate smooth lasting of the shoe upper over the edges of the insole unit in the shank portion of the shoe. As shown in Fig. 6, the shank portion of the insole I0 is cut somewhat narrower than the corresponding portion of the re- A inforcing piece so that the edges of that portion of the insole will have no tendency to hold the upper away from the sides of the last or to in- 5 terfere with the smooth lasting above referred to. As shown, also, the shank stiiener I4 is attached by means of tacks 22 to the reinforcing piece. The front end of the shank stiiener is located some distance rearwardly from the front 10 end of the reinforcing piece I2 so that when the insole unit is incorporated in a shoe the front end of the shank stiii'ener will be spaced rear- Wardly from the break line of the shoe and thus the stiffener will have no tendency to dig into l5 the outsole as the shoe is being `worn. The reinforcing piece I2, before being assembled with the insole, is molded to conform to the bottom contour of the heel and shank portions of the last for the shoe in which the insole unit is to 20 be incorporated, the reinforcing piece, as shown. being arched both longitudinally and transversely to lt the correspondingly arched por*- tions of the last bottom. Preferably, also, the shank stiffener Il is provided near its :frontl end 25 with an aperture 24 and a similar aperture 26 is provided in the reinforcing piece I2 in registry with the aperture 24, the registering apertures 2l and 26 being adapted to receive a fastening, such as the rivet shown at 28 in Fig. 5, for use 30 in securing the shank portion of the insole unit to the outsole of the shoe. The reinforcing piece I2, with theshank stiffener Il attached thereto,

is secured to the insole III by means of suitable adhesive, such as rubber latex, and in addition 35 by means of fastenings, such as wire staples/ 3l), the staples, as herein shown, being employed only in the shank portion of the insole unit and being located at opposite sides of the shank stiffener. The shank and heel portions of the illus- 40 trated insole conform to the molded contour of the reinforcing piece I2 except in the vicinity of the median line of the shank where the rib or ridge I6 of the shank stiil'ener forms a corresponding ridge 32 (Fig. 4) in,the insole, the 45 shank stiifener and the staples 30 cooperating to retain permanently this ridged formation in the insole so that during the manufacture of a shoe in which the reinforced insole is incorporated the pressure to which the outsole is sub- 50 Jected during the leveling operation will result in forming a corresponding ridge or so-called cottage-roof formation in the outsole.

In the manufacture of the above-described reinforced insole unit the reinforcing piece may be 55 died out, its front and lateral edges may be beveled, a longitudinally arched shank stiifener may be assembled therewith and secured thereto, and the reinforcing piece may be molded in substantially the same manner as that customarily prac-y 30 ticed in the manufacture of shank stiileners for turn shoes. If desired, the rivet-receiving apertures in the reinforcing piece and inthe shank stiffener may be' formed therein during the dieing or blanking out of those parts, in which case the 05 aperture in the reinforcing piece will be alined with the aperture in the shank stiifener during the assembling of the parts and thus will serve as a means for gaging the longitudinal relation of the parts. It may be found convenient, however, 70 to formthe aperture in the reinforcing member by punching or drilling through the aperture in the shank stii'fener after the shank stiiener has been attached to the reinforcing piece.

Before the reinforcing piece I2 is assembled 75 with the insole 0 a coating of adhesive, for ex- Athemto adhere to each other.

ample rubber latex. is applied to `one or both of these parts. Conveniently the reinforcing piece may be dipped in a container of latex and. the latex may be 'applied to one side of the heel and shank portion of the insole by drawing the latter across a roll which is partially submerged in latex. 'I'he reinforcing member and the insolel may be readily assembled manually, the operative using his fingers to aline the rear and lateral edges of the parts and to press them together to cause After the reinforcing piece and the insole have been thus assembled the staples 30 or other fastenings are driven through the lateral margins of the shankV `of staplesbe driven in a manner firmly to secure together the marginal portions of thereinforcing piece and the insole but the machine operates also `to clamp the work in the region' where the staples are inserted with a substantial amount of pressure and this clamping pressure is eifective to insure that a satisfactory bond will be obtained between the adhesive-coated parts in the immediate vicinity of the clamping instrumentalities. If, as herein shown, no staples or similar fastenings are employed in the heel portions of the insole and the reinforcing piece, the heel portions of those parts will be adequately secured together by the pressure of the operators hands during the assembling and subsequent handling of the parts and by the pressure to which the parts are subjected during subsequent shoemaking operations. Advantageously the staples may be driven into the outer surface f of the reinforcing piece and clenched against the outsole-engaging surface'of the insole since this versely arched shank stiffener is employed since the insertion of the staples assists in bending the insole about the shank stiiener. After being inserted the staples serve in conjunction with the shank stiffener to retain the insole in its transversely bent or ridged condition.

In accordance with the above-described method a reinforced shoe bottom or insole unit may be produced the heel and shank lportions of which are shaped to conform to the bottom contour of the heel and shank portions of a last before being applied to the last and without placing the insole unit in a mold or upon a form and subjecting it to heavy molding pressure, the only molding operation being that carried out in connectionwith the initial shaping of the reinforcing piece. If desired, however, this initial shaping or molding of the reinforcing piece may be dispensed with and, after the reinforcing piece and the insole have been assembled and secured together, the insole unit thus produced may be molded between suitably shaped mold members in a molding machine, such, for example, as the sole molding machine disclosed in United States Letters Patent No.

1,003,971, granted September 26, 1911, upon application of A. A. Ball, Jr. f

After the reinforcing piece has been attached to the insole and the insole has been shaped in its shank portion as above described, the resulting insole or shoe bottom unit is laid upon the bottom of a last and held in placel thereon by tacks driven into the last bottom in the usual way, the unit fitting the last as a result of the shaping operations already described and in spite of the fact that the insole has not been subjected to any actual molding operations such as have heretofore been used to impart thedesired shape to the insole. f- Y In the making of a shoe upon the last fitted with my improved reinforced insole unit, an upper is pulled over the last and secured in lasted relation to the insole, an outsole is laid and secured to the shoe bottom, and a heel is attached, all in accordance with any well-known or suitable practice. Such a shoe is illustrated in Fig. 5, the shoe comprising, in addition to the improved insole unit, an upper 34, an outsole 36 attached by cement to the shoe bottom, and a heel 38, secured in place by heel-attaching nails 40. It is to be noted that a shoe embodying the hereindescribed reinforced insole or bottom unit is particularly adapted to have its outsole secured by means of cement, inasmuch as there is no metal at the lower side of the insole to interfere with the bond between the outsole and the shoe bottom in the shank portion ofthe latter,'though obviously the outsole may be attached by stitching if preferred.

In order to provide for more irmly and adequately stiffening the shank portion of the shoe and overcoming any tendency of the longitudinal arch of the shoe to break down under the weight of the wearer, it is preferred to secure the reinforcing piece, the shank stitfener, and the inner and outer soles together at the forward portion of the shank of the shoe by means of a strong fastening, such as the rivet 2B already referred to. In practice it has been found lunnecessary to provide rivet-receiving apertures in the insole I0 or in the outsole prior to the driving of the rivet. 'I'he rivet may be driven by the use, for example, of a rivet-driving device of the type wherein a positioning pin associated with one member of a rivet-setting couple is adapted to enter the apertures in the shank stiffener and reinforcing piece and to position those parts with the apertures thereinv in line with a rivet held in position to be driven by the other member of the rivet-setting couple. A rivet-driving device of this general nature is disclosed in United States Letters Patent No. 1,829,787, granted November 3, 1931, upon application of J. F. Crowley. In the use of a rivet-driving device of this nature the rivet will be caused to force its way through the previously unperforated outer and inner soles of the sh and thereafter to pass through the alined apertures in the shank stiffener and reinforcing piece. Finally, the rivet will be set by having its inner end clenched against the inner surface of the `reinforcing member. If desired, the use of a rivet-driving device such as that above referred to may be dispensed with by the expedient of inserting a drill, punch or other hole-forming tool in the apertures 24 and-.2G in the shank stifiener and reinforcing piece, respectively, and operating the .tool to form holes through the insole and outsole of the shoe in line with the apertures in the shank stiienerv and reinforcing piece, after which a rivet may be passed through the holes in the various shoe bottom parts mentioned and set without the use of the special rivet-driving mechanism referred to. The use of the rivet or 5 other fastener, as described, insures that the members employed for reinforcing and stiening the shank portion of the shoe bottom will be firmly secured together in such a manner as to maintain the longitudinal arch of the shoe bottom l throughout the life of the shoe.

In'cases whereM an insole or bottom unit con- I attaching nails or the clenched-over inner end of 25 the rivet 2l to be pulled outwardly through the reinforcing piece I2, whereas experience has shown that the materials commonly employed as substitutes for leather will not satisfactorily resist the strains to which the heel-attaching nails 30 are subjected in the wearing of a shoe.

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

l. That improvement in methods of making 35 reinforced shoe bottom units which consists in assembling an unmolded insole member and a shank-reinforcing, piece with adhesive between said parts, said reinforcing piece havingbeen previously arched both lengthwise and crosswise 40 to conform to the bottom contour of the shank portion of a last, and applying pressure to said parts to shape the shank portion of the insole member to conform to the lengthwise and cross' wise curvatures of the shank-reinforcing piece 45 and consequently ofthe last bottom and to secure said parts together in a manner permanently to retain the shape imparted to the insole member. 2. That improvement in methods of making reinforced shoe bottom units which consists in 60 assembling a heel and shank reinforcing piece and an unmolded insole with adhesive between said parts. said reinforcing piece being molded` -65 sembling a reinforcing piece previously molded to conform to the .bottom contour of the shank portion of a last and an unmolded insole with l,n.,clhesivebetween said parts, and inserting fastenings through one of said parts into the other,

` 70 thereby causing the adhesive andthe fastenings to secure said parts firmly together and conforming the shank portion of the insole to the rein forcing piece. y g 4. That improvement in methods of making 75 reinforced shoe bottom umts which consists in assembling a heel and shank-reinforcing piece and an unmolded insole with adhesive between said parts. the reinforcing piee having been previously molded to conform to the bottom contour of the heel and shank portions of a last and having a shank stiil'ener attached to its insole-engaging side, and inserting fastenings through the lateral marginal portion of one of said parts into the other, thereby causing the adhesive and the.

fastenings to secure said parts firmly together and conforming the shankv portion of the insole to the reinforcing piece.

5. 'I'hat improvement in methods of making reinforced shoe bottom units which consists in applying adhesive to the heel and shank portions of a f'lat insole and to a heel and shank-reinforcing piece previously molded to conform to the bottom contour of the heel and shank portions of a last, laying the said reinforcing ,piece in correct I of the insole and the reinforcing member at oppoi site sides of the shank`- stiiener, thereby causing said parts to be firmly secured together by said fastenings and by the adhesive, and conforming the shank portion of the insole to the reinforcing piece.

'l. That improvement in methods of making reinforced shoe bottom units which consists in assembling a heel and shank-reinforcing piece and an unmolded insole with adhesive ,between said parts. the reinforcing piece having been previously shaped to conform to the bottom contour of the heel and shank portions of a last and having attached toits insole-engaging 'side a longitudinally arched shank stlifener having a longitudinal ridge' at the insole-engaging side of the reinforcing piece, and inserting fastenings in the lateral margins of the shank portionsof the reinforcing member and the insole, thereby causing the adhesive and the fastenings to secure said parts firmly together and conforming the shank portion of the insole to the longitudinal curvature of the reinforcing piece and forming in the shank portion of the insole a longitudinal ridge corresponding to that of the shank stifiener.

8. That improvement in methods of making reinforced shoe bottom units which consists in assembling a heel and shank reinforcing piece and an unmolded'insole with adhesive between said parts, the reinforcing piece having attached` to its insole-engaging side a longitudinally and transversely arched shank stiflener, pressing the sole to the transverse curvature of said shank' stinener.

9. That improvement in methods of making shoes which consists in assembling an unmolded insole and a heel and ,shank-reinforcing piecel with adhesive between said parts. the reinforcing piece having been previously molded to conform to the longitudinal and transverse' curvatures of the bottom of the heel and shank portions of a last and having a shank stiffener attached to its insole-engaging side, applying pressure to said parts, thereby securing the insole to the reinforcing piece and shaping the shank portion of the .insole to conform to the shank portion of the reinforcing piece, applying the insole unit thus produced to the bottom of a last, lasting an upper to .the insole, and attaching an outsole and a heel to the shoe.

10. "That improvement in methods of making shoes which consists in applying to the bottom of I a. last a shoe bottom u nit comprising an insole member, a heel and shank-reinforcing piece having 'a fastener-receiving aperture therein and a shank stiifener having a fastener-receiving aperture registering with the aperture in said reinforcing piece, lasting an upper to said shoe bottom unit, attaching an outsole and a heel tothe shoe, pulling the last, and inserting a fastener through the outsole and the insole member and through the registering apertures in the shank stiffener and reinforcing piece to secure together the outsole, insole, shank stiifener and reinforcing piece. 11. That improvement in methods of making shoes which consists in securing to the heel and shank portions of a flat insole a longitudinally. and transversely curved reinforcing piece having a rivet-receiving aperture therein, and a shank stiener having a rivet-receiving aperture registering with the aperture in the reinforcing piece and thereby imparting longitudinal and` transverse curvatures to said insole and producing a shoe bottom unit, applying the shoe bottom unit thus produced to the bottom of a last, lasting an upper to, said unit, attaching an outsole and a heel to the shoe, pulling the last, driving a rivet 40 inwardly through the outsole and through the registering apertures in the shank stiifener and reinforcing member, and clenching the inner end of therivet against the inner surface of the reinforcing member rigidly to secure together the outsole, the insole, the'shank stiil'ener and the reinforcing member. j

12. A reinforced shoe bottom unit comprising an innersole member having a longitudinally arched shank portion, a reinforcing piece for the .60 shank portion of. the innersole member secured to the latter, and a shank stiifener interposed between the reinforcing piece and the innersole member yand directly secured to the reinforcing piece, the shankstiifener having an open rivetreceiving aperture therein and the reinforcing /member having an open rivet-receiving aperture `therein registering with the aperture in the shankK stiffener.

13. A reinforced shoe bottom unit comprising an innersole having a longitudinally and transversely arched shank portion, a reinforcing member for the hee] and shank portions of the innersole, a ribbed shank stiiener interposed between the-reinforcing member and the innersole and imparting a corresponding ribbed contour to said innersole, and a series of staples securing together the marginal, portions of the innersoleand the reinforcing member at the shank portion of the innersole, the staples being set inwardly from the edge of said parts so as to preserve the ribbed contour of the innersole.

14. A reinforced shoe bottom unit comprising an innersole, a reinforcing piece secured to the.

heel and shank portions of the innersole, each of said parts being arched longitudinally and transversely and the innersolebeing arched transversely to a greater extent than the reinforcing piece, a longitudinally arched shank stiffener interposed between the innersole and the reinforcing piece, and fastenings securing together 5 the marginal portions of the innersole and the reinforcing piece along the opposite edges oi the shank stiifener and cooperating with the shank stiffener to retain the transverse arch of the innersole. 10 15. A reinforced shoe bottom unit comprising a longitudinally and transversely arched heel and shank reinforcing piece, a shank stiifener secured to the reinforcing piece, and an insole secured to the reinforcing piece at the side of the latter l5 to which the shank stiifener is secured, the insole being transversely arched to a substantially greater extent than said reinforcing piece.

16. A reinforced shoe bottom unit comprising an innersole member, a. heel and shank reinforc- 20 ing piece secured byA adhesive to said innersole member, a ribbed shank stifl'ener interposed between said parts, said innersole member conforming to the ribbed contour of said shank stiifener, and fastening devices located at opposite sides 25 of and in close proximity to said shank stiifener, said devices securing the lateral marginal portions of the innersole member and the reinforcing piece together so as to preserve the ribbed contour or che latter. 30

17. A reinforced shoe bottom unit comprising an innersole, a heel and shank-reinforcing piece secured to the innersole, and a shank stiffener interposed between said parts, said stiifener having a longitudinal ridge imparting a correspond- 35 ing ridged formation to the innersole.

18. A reinforced shoe bottom unit comprising an innersole having a longitudinally arched shank portion, a longitudinally arched reinforcing piece for the heel and shank portions of the innersole, 40 and a longitudinally arched shank stiifener inter posed between'said parts,rsaid stiffener having a longitudinal ridge at its innersole-engaging side and said innersole having a longitudinal ridge supported by the ridgevof the shank stiflener. 45

19. A reinforced shoe bottom unit. comprising an innersole, a-heel and shank-reinforcing piece completely covering the heel and a substantial portion of the shank portion' of the innersole, a shank stiflener interposed between said parts 50 and imparting a ridged formation to said innersole. and rows of staples securing together the lateral marginal portions of the innersole and the reinforcing piece, said staples being spaced sub' stantlal distances inwardly from the lateral edges 55 of the reinforcing piece to preserve the ridged formation of the innersole.

20. A reinforced shoe bottom unit comprising an innersole, a heel and shank-reinforcing vpiece secured by adhesive to the innersole, and a ribbed 60 shank stiifener interposed between said parts and imparting a corresponding ribbed contour to said innersole, and rows of staples spaced substantial distances from the lateral edges of the reinforcing piece securing the marginal portions of the 55 innersole and the reinforcing piece together along opposite edges of the shank stiffener to maintain permanently the ribbed contour of said innersole.

21. A shoe comprising an innersole, a reinforcing member for the heel and shank portions oi' '(0 the innersole adhesively secured to the innersole at the inner or `foot-engaging side of the latter,

va shank stiffener interposed between the reinforcing member and the innersole, an upper having its margins lasted over` the innersole, an outla,

reinforcing member and the innersole and secured to the reinforcing member. an upper having its margins lasted over the innersole, an outersole adhesiveiy secured to the overlasted upper margins, the shank portions of 'the reinforcing rmember, the innersole and the outersole being transversely concave at the sides directed toward the inside of the sh. and a rivet extending through the reinforcing member, the shank stiffener, the innersole, and the outersoie in the shank portion oi the shoe.

WALTER W. PRUE.

CERTIFICATE'OF CORRECTION.

Patent no. 2,075,025. March 9, 1957.

WALTER w.l PRUE.

I-t is hereby certifiedthat error appears in the printed specificationVv of the'above numbered patent requiring correction as follows: Page 5,v second column,l line 49, claim 19, after the article "a" insert ribbed; and that the said Letters Patent should be readwith this correction therein that the same may conform to the record of the case in the Patent Office.v

.Signed and sealed this 27th day oi`Apri-1, yA. D. 193'?.

(sul.)

VLeslie Frazer Acting Commissioner of Patents DI SOLAI M E R 2,073,025.-Walter Prue,- Auburn, Maine. SHOE BOTTOM UNIT AND METHOD oF MAKING THE SAME.

Patent dated March 9, 1937. Disclaimer filed February 17, 1938, by the assignee, United Shoe Machinery Corporation.

Herel enters this disclaimer to claims 1, 2, 5,

l c'al Gazette March 15, 1.938.]

and 9 of said Letters Patent.