Sept. 17, 1946._ ._ M, MARGoLjN ‘L f 2,407,670 ' RES ILIENT INSOLE originai Filed July 8, 1940 l ' ` ' 4 mvÈN-ron BY' Meylan mmouof 4 ATroRNfgYa Patented Sept. 17, 1946 2,407,670 UNITED STATES PATENT OFFICE 2,407,670 RESILIENT INSOLE Meyer Margolin, Elgin, Ill. Application July S, 1940, Serial No. 344,414, which is a divisionof application Serial No. 272,364, May 8, 1939. Divided and this application May 22, 1943, Serial No. 487,986 4 Claims. 1 This application is a division of my Patent (Cl. 36-3) 2 shoe only by means of a complex arrangement in which an opening under the main arch is em pîoyed. My construction provides for the ñrst My invention relates to a novel resilient insole time a novel resilient insole which in itself is and more particularly to an insole, the forepart of which is resilient with a periphery of material CA formed to provide resilience for the forepart of the insole and at the same time a forced breath stili enough to hold the necessary stitching for ing simultaneously over a large area of the fore attachment of the insole in the shoe. My novel part of the shoe. insole has grooves located on the bottom thereof, It is the object of my invention to provide a which grooves are substantially rectangular in novel means for attaching a rubber-like forepart cross section. The grooves are adapted to be portion to a stiff shank piece. compressed and expanded to provide forced It is a further object o_f my invention to form ‘breathing which is transmitted by suitable perfo integrally With a rubber-like forepart portion of rationg in the insole to the interior oi the shoe. an insole, a metatarsal arch support and a pro I provide ball cushion support for the foot by , jection adapted to iit into an opening in a shank means of a central resilient portion of greater Number 2,319,818, granted May 25, 1943. thickness than the edge portion of lap and insole. The prior art has long recognized the problem of a need for a resilient forepart for the shoe. The desirability of an eiîective ventilation or piece to engage said forepart portion to Vsaid shank. It is a further object of my invention to pro vide a resilient insert with a periphery sufûciently forced breathing for the shoe has long been noted, 20 stiff to hold the necessary stitching- _ but up to the present time no constructions have Ibeen devised which suitably meet the problems of providing resilience and forced breathing in the It is a further object of my invention to pro vide a resilient insole having transverse grooves terials, such as cellular rubber or other resilient It is still a further object< of my invention'to provide a resilient insert in an insole, which insert carries the above described forced breathing extending part Ways across‘an insole and perfora tions adjacent said grooves, said grooves being forepart of the shoe. My invention comprises a resilient insole, the 25 adapted upon expansion and compression to force air through said perforations. forepart of which is primarily constructed oi ma material, and the periphery of which comprises either leather alone or leather in combination with the resilient material, the leather providing 30 grooves and adjacent perforations. It is a further object of my invention to pro stiifening and backing for holding the stitching. vide a resilient insole havingA about its periphery The relatively stili material may be any material, recesses into which are inserted stiffening pieces the physical properties of which correspond to. comprising a stiff toe member, stiiî side members, leather in this art. I provide perforations in the resilient material :o. Ul and a stiff shank portion of an insole, in separate sections. which extend through the resilient material and These and further objects of my present inven I also provide certain transverse grooves which tion will become apparent from the description are alternately compressed and expanded by the which follows taken in connection with the draw action of the foot in Walking so Aas to force air ing, in which from these transverse grooves through the perio Figure 1 is a plan View of the top of the re rations to the foot itself. silient insole of my invention showing a construc I provide various constructions by means of tion in which the rubber middle portion has a which I can achieve the desirable objective of a double flap into which >double flap are positioned resilient insole with stili periphery, which insole is permeable to air and which insole may carry 45 stiffening members which are adapted to hold the stitching of the shoe. . integral therewith metatarsal support and arch Figure 2 is a Section taken along the lines '2-2 support. of Figure l. My resilient insole _is not to be confused with Figure 3 is a section taken along the line 3-3 the rubber resilient fillers which have been dis closed in this art. Such iillers lie between the 50 of Figure 1. Figure 4 is a section taken along the line 4-4 insole and the outsole and although they are re of Figure 1. silient in themselves do not increase the resilience Figure 5 is a plan View of the top of a modified of the forepart of the shoe but act only to possibly form of the resilient insole of my invention in soften such forepart to the step. Such rubber fillers have been employed to force air into the 55 which the rubber middle portion has a single ñap 2,407,670 3 4 and the various stiffening members, comprising a toe stiifening section, side stiifening sections secured thereto by stitching 62 and 63. It is to be noted that the line of stitching 63 is imme diately adjacent the junction of the insert 5i and the shank portion, are laid on to that flap to be united thereto. Figure 6 is a cross section taken along the _line 5-5 of Figure 5. Figure 7 is a cross section taken along the line 'l-'l of Figure 5. Figure 8 is a section taken along the line 3-3 of Figure 5. Figure 9 is a plan view of the top of a modified form of my invention in which the middle rubber portion has a central flap on each side of which are laid stifîening members to be‘unit'ed to that. flap. and the stiffening member 65 so that there can be no gap even under stress at that point. Such gapping would mean pinching of the sock lining with consequent wrinkling. To effect the joining of the shank 55 to the resilient portion, I provide a projection 65 shown molded integrally with the flap 5d, which projec tion 65 fits into a recess E6 in the shank portion 5B. Y As described hereinbefore, 'the resilient por tion is provided with forced breathing grooves 68 and adjacent perforations 5S having bosses 'I0 15 at the bottom thereof. Figure 10 is a section taken along the line Referring now to Figure 9, I show a Still further modified form of my invention in which I pro vide a shank portion 15 and a resilient forepart portion 16 which has a single centrally extend Figure 12 is a section taken along the line 20 ing nap 61. The toe stiffening portion 'I8 com I2---l2f of Figure 9. prises an upper layer 'I9 and a bottom layer 80 Referring now specifically to Figure 1 I show of the shape shown at I3 Which‘ fit on each side the- shank portionof the insole 20 and the resil of the centrally extending flap of the resilient ient forepart portion 2i. The resilient portion portion and which layers have openings 8| and has extending flaps 22 and 23'. These flaps have 25 82 into which projections 83 and 813 of the cen in the forepart and rear extensions 25, Z1 and 28 trally extending flap which are molded integrally molded integrally therewith which are adapted with the flap, project. Similarly, the side rein lli-_l0 of Figure 9. Figure 11 is a section taken along the line ll-ll of Figure 9. to enter suitable recesses» 29 and-35 in» the toe stiffening` piece 3-I and the portion 20 respectively in order to secure ya posit-ive and accurate en gagement therewith. The engagement is ef fected- by inserting the toe piece 3| between the flaps in such a Way that the projection 25 rides into the opening 29 in the indicated` portion of the toel piece and similarly inserting the shank portion 2G between the double flaps so that the projections 21 and- 28 ride into and engage re cess'SU-in `the shank portion. ' forcing members comprise an upper stiifening member 85 and a lower sti'i’fening member 86 on each side of the centrally extending liap 6l. To facilitate th‘e joining of the resilient por tion to the shank portion 15, I provide a cen trally extending flap 88 having two side projec tions 39 which ñt into corresponding openings in the flaps 9€) and 9| of the shank portion I5. In the main part of the resilient portion are grooves 95 and adjacent thereto are perforations 95 hav ing on the bottom 'thereof bosses 97V. Extending The side stiiTeni-ng` members 33k and 34 are from the resilient portion is a metatarsal support inserted between th'e flaps 22» and 23 at the sides 40 92. of theV insole andz then suitable rows of stitching Referring now generally to the constructions 35 and 35 secure the respective stiifening mem I have` shown throughout Vthe drawing, itis to be bers and shank portion to the resilientV forepart noted ‘that it is desirable that the »center part portion. On the bottom of the resilient portion of the resilient. forepart is of greater thickness and shown in dotted lines are grooves 31 which than the peripheral portions thereof. This is to are adapted to be compressed to-drive> air through provide a round bottom shoe effect and a center the perforations 38- whichvhave the bosses 39. thickness for ball cushion support. ‘ As- can ‘be seen in. Figure 4, the- rear flap ex The flap extensions which extend over the . tension of th'e resilient portion isl molded in the stiifening portions are of special value not only form of a metatarsalsupport ¿il which has suit 50 because they provide a positive means for secur able perforations 4I therein to provide for a ing the insert to the insole, tout also because they greater flow of= air and condensation of moisture. provide for a, means for decreasing the thickness Referring now» to .Figure 5, I show a modified from the center to the periphery. . form` of my invention, wherein> 50 refersrto the As can be noted, I have shown a number of shank of the insole and 5I to the resilient por 55 modifications of my invention whereby I can tion of my insole. The resilient portionis formed provide an insole with the resilient forepart por with an outwardly extending> ñap at the sides and tion and stiff toe,.side and shank members in ñrm front portiony and a` double nap at the rear by union therewith. The Various forms of my in reason of the metatarsal support molded inte vention which I have set forth provide for quick grally therewith on the top. The resilient flap assembly and this is especially an improvement is indicated in `th‘e toe portion as 52, at the sides 60 over the form in which al leather insole has a as 53 and the rear asl 54. The added. metatarsal cut out portion in the middle of the forepart support is55. thereof and an insert placed therein. As will be noted- from the sections shown in I provide according to my inventionwarious Figures e, '1 and 8, the nap isonly a portion of 65 stiffening membersf including a toe sti?fening the thickness of the resilient main portion it self, the stiff leather portion 56 being of such thickness as to be iiush with the top of the resil ient insert. 56 is the toe stiifening portion, it being necessary to have a fairly stiff area at the toe section of th’e insole. This toe stiffening por tion 56 has a recess 5T into which extends the projection> 58 which is shown molded integrally with the flap 52. Side reinforcing members 6D and 5| similarly lie over the ñap 53 and are member, side stiffening members and a shank portion. 'I'he particular way in which these stiff ening members can» be united» tof the resilient portion has been set forth in detail in Figures 1V to 12. The side stiffening members- may be separated from or integral with the shank por tion, in which case the resilient’ materiali is in serted therebetween and it merely remains'for ¿ the toe stiffening portion to be united` with the . resilient portion. I may provide openings in the 2,407,670 5 toe stifîening member and shank portion for the purpose of receiving suitable projections which may be molded into the resilient material so that ening material is adapted to be inserted therein. It will be noted that the metatarsal support Which I provide is molded integrally with the re a positive and accurate engagement is effected between the various parts. Similarly I may pro vide means for engaging the side stifîening ele ments with the resilient central Vforepart area. silient material and lies on a flap which rests on the stiff shank portion. This may be seen in Figures 4, 8 and 12, as well as the plan views To do this, I may, for example, provide projec tions molded with the ñaps of the resilient fore corresponding thereto. In my construction, by providing the forced breathing over the entire forepart area of the part area, which projections are adapted to en 10 foot, I provide a well ventilated shoe that effec tively and economically solves the problem of gage corresponding recesses in the side stiiîening shoe ventilation. Specifically, the spaced trans- v members. This provision for locking engage verse grooves provide a great bending flexibility ment between the various stiiîening elements for the insole because of the obvious physical and the resilient material is of importance both because it provides speed of operation in assem 15 advantages involved and the bosses on the bot tom of the perforations provide a` spring effect bly of the various parts, in that the operator can Which is of definite advantage for obtaining good quickly insert a stiffening part, such as the toe stiffening member, and by fitting the recesses walking properties. The perforations play their part in providing for greater softness and com terial, may determine the proper positioning of 20 pressibility for the resilient forepart itself. It is understood that the constructions set forth that toe stiffening element Without delay. above are by Way of example of the principles of Similarly with the side stiñening elements and my invention only and that I intend to be lim the shank portion. In addition to accelerating ited not by the specific constructions shown but the assembly operations, this construction also only by the claims here appended. provides for more positive engagement of the therein with the projections on the resilient ma various units of my assembly so that before or I claim: 1. A resilient insole comprising a resilient cen after the stitching which permanently secures tral forepart area, a ñap formed integrally with the various parts together, there can be no dis said resilient central forepart area, independent placement of the parts with respect to one an other. It is obvious that such a displacement 30 edge stiñîening means carried by said flap. would be a serious matter in that it would cause 2. A resilient insole comprising a resilient cen interruption in the operations and produce re tral forepart area, a flap formed integrally with jects. said resilient central forepart area, peripheral stiiîening means secured to said flap anld- means different constructions by means of which the 35 for locking said stiifening means to said resilient As can be seen, I have exampled a number of periphery of the resilient forepart area of my central forepart area. i 3. A resilient insole comprising a resilient cen tral forepart area, a flap formed integrally With said resilient central forepart area, and a stiff by providing separate side stiiîening elements and l shank and toe portions and I have also shown 40 toe piece carried by said flap. 4. A resilient insole comprising a resilient cen that the side portions may be integral with the insole may be so reinforced as to enable it to receive the necessary stitching. I have done this shank portion, and in that event, a separate toe portion may be quickly inserted in its relative position with the resilient material. I have further shown that I may form my re silient material With a single ilap centrally posi tioned or positioned either at the top or the bot tom with respect to the thickness of the flap or I rmay provide two flaps in which event the stiff tral forepart area,Y a ñap formed integrally with said resilient central forepart area, side stiñen ing means carried by said flap, a stiff toe piece carried by said flap and means for locking said separate stiffening means to said resilient central forepart area. MEYER MARGlOLIN.