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May 3, 1938. 2,115,810 H. B. 'GORMAN CEMENTED SHOE CONSTRUCTION Filed March 6, ~1935 , . “ ' 15 IN QENT R ' ‘ kfmé'qw,énliufzqwié?ggw ~ I B‘ I Patented May 3, 1938 2,115,810 UNITED STATES PATENT orFicE 1 2,115,810 OEMENTED SHOE CONSTRUCTION Henry B. German. Lynchburg, Va., assignor to Compo Shoe Machinery Corporation, New York, - N. Y., a corporation of Delaware Application March 6, 1935, Serial No. 9,601 2 Claims. (Cl. 12-142) This invention relates to the manufacture of cemented shoes, and more particularly to the manner of bonding the outsole of such a shoe to the upper. T upper. A general object of the invention is to provide an improved cemented shoe structure wherein any tendency of the outsole to peel away from the upper is circumvented. ' A further object is to provide an improved out 10 sole for cement attachment to a lasted upper. Another object is to provide a method of pre venting the outsole of a cemented shoe from peel ing away from its upper. Yet another object is to provide a cemented 15' shoe having a stronger, more permanent bond between the outsole and upper. ' Other objects of the invention will in part be obvious and will in part appear hereinafter. The invention accordingly comp-rises the sev 2 O eral steps and the relation of one or more of such steps with respect to each of the others, and the article possessing the features, properties, and 2 the relation of elements, which are exempli?ed in the following detailed disclosure, and the scope of the application of which will be indicated in the claims. , For a fuller understanding of the nature and objects of the invention reference should be had to the following detailed description taken in con 30 nection with the accompanying drawing, in which: Fig. 1 is a perspective view of an outsole em bodying the principles of the present invention; 35 40 45 50 altering the direction of the application of the separating force which is exerted when the edge of the sole is pressed downwardly away from the and Fig. 2 is a fragmentary transverse sectional view across the forepart of a shoe to which the outsole of Fig. 1 has been attached. In the manufacture of cemented shoes the out sole is united to the bottom of the lasted‘ upper by means of cement which is usually pyroxylin cement but may be of any other suitable kind. Pyroxylin cement forms a ?rm tenacious bond between the shoe parts which cannot be pulled apart by a direct pressure acting more or less perpendicularly to the plane of the bond. How ever, in some cases where the extension edge of cemented shoes is subjected to severe down ward knocking or scuffing, there may ensue a peeling action which peels the outsole away from the upper to which it is cemented. That is, the cemented bond may sometimes be peeled or split apart where it could not ordinarily be directly pulled apart. In accordance with the present in vention, this peeling separation of the outsole 55 from the upper is circumvented by de?ecting or ’ Referring more particularly to the drawing, there is shown’an outsole II) which may be made of any suitable sole stock. In fact, the bond ob-. tained by following the principles of the present invention is so much stronger than those hereto; fore available that even "coarse inferior grades of ' leather such as belly leather, may be used with _ improved tenacity between the‘ shoe parts,‘ al though‘ a'superior joint is assured‘when leathers . of the commonly employed quality are used. The outsole I0 is rounded to‘ any desired 5126,3116. is 115 given any of the usual desired operations prior to cement a?ixing it to the upper, such as shank ing it out and roughing its marginal portion to which cement is to be applied. In‘accordance with the present invention, the 26 sole is provided with a channelor incision I I which extends around a marginal portion‘thereof and runs downwardly into the sole stock from its ?esh side. The primary function of this channel is to weaken the sole so that its edge portion may‘ flex downwardly away from its body portionso as to alter the effective direction of a force ap plied downwardly against the top edge of the sole after it is cemented to the shoe. This will be more apparent upon considering the shoe 05 0 structure illustrated in Fig. 2, which comprises an insole I2 to which an upper I3 is overlasted in the conventional McKay relationship except that its overlasted allowance M is preferably at tached to the insole by cement indicated at I5. However, the particular method of lasting the upper and insole makes no essential difference with respect to the principles of the present in vention, so long as the outsole ultimately is ce ment bonded to the lasted upper. In the form. of shoe particularly illustrated in Fig. 2, a filler I 6 is applied between the inturned edges of the last ing allowance and the outsole III is affixed thereto by a layer of cement I1, preferably pyroxylin ce ment, which is located between the marginal por tion of the sole and the inturned lasting allow ance. ' Channel II is extended downwardly and in wardly into the sole stock to a depth which‘ is preferably at least half the thickness of such stock, or at any rate to such a depth that it fa cilitates downward flexure of the edge of the sole with respect to its central body portion. Some of the cement I'I seeps into channel I I and serves normally to hold it closed. ' 55 2 2,115,810 However, the cement within channel H does not hold this channel closed with the same tenac ity as the main body of cement holds the outsole to the upper. That is, when a force such as that indicated at F is applied to the edge of outsole, such edge ?exes downwardly, opening the chan nel ll. Once this channel pulls open, the force F, which tended to peel the bond at H, becomes 10 15 20 25 applicable to such bond along a component in dicated at F’. When the channel II is down wardly and inwardly directed, it will be seen that the force F must be transmitted around the thin ?exed stock at l8 to a vicinity located within the point I9 where the channel H meets the ?esh surface of the sole. In other words, the peeling effect of force F is altered to the direct pulling effect of force F’ because of the opening of the gap at H. In practice, the opening I!) of the channel is located about 5-2 of an inch inwardly from the outermost boundary‘ 2!] of the cemented area, so that the peeling action exerted by force F can only continue for this F3§ of an inch, after which the channel pulls open and further exer tion of the force must act directly downwardly against the adhesion of cement ll. This effec tively circumvents continued peeling of the sole away from the upper which would render the shoe un?t for wear, and substitutes a relatively harmless local ?exure of the edge portion of the 30 sole. This edge portion is adaptedto move back into position as soon as the force at F is removed. The channel H may be extended around any desired marginal part of the outsole, being shown in Fig. l as extending around the forepart there 35 of, which is the preferred form. However, it may be extended along the shank and even into the heel portions if desired. This channel may be ap plied at any suitable time during the manufac ture of the outsole, either before or after any of 40 the usual operations, such as shanking, roughing, cementing, etc., and it may be made in any suit able manner, as for example by means of con ventional channeling machines having a special knife, or having a conventional knife adjusted to 45 the required angle. As explained, the channel preferably extends downwardly and inwardly in order to transfer the effect of downward scuf?ng forces to an area located well within point l9 at which the peeling action stops. However, it is contemplated that this channel my extend in any desired direction so long as the edge portion of the sole is weakened so as to permit downward ?exure thereof in a manner which circumvents or retards a peeling separation of the outsole and 55 upper. It will be appreciated that in the drawing, the size and relationship of the parts has been ex aggerated better to show the described non-peel ing action. It will be seen that in accordance with the. pres 60 ent invention, kicking and scu?ing forces applied to the edge of the outsole of a cemented shoe can not be effective to peel or pry the sole away from the upper and that a stronger and more perma nent attachment between these shoe parts is as sured. Since certain changes in carrying out the above method, and certain modi?cations in the article which embody the invention may be made with out departing from its scope, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense. It is to be understood that the following claims are intended to cover all of the generic and spe ci?c features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween. ~ 20 Having described my invention, what I claim as new and desire to secure by Letters Patent, is: 1. A cemented shoe comprising an upper and, an outsole, cement attaching said sole to said up per, said sole having a channel extending mar ginally around the forepart thereof, said channel opening into the ?esh or upper surface of said outsole along a line located only slightly within the outer boundary of said cement, and continu ing downwardly and inwardly into said sole 30. whereby the extended edge of said sole at the forepart is integrally attached to the remainder thereof at points located inwardly beyond the outer margin of said cemented area, said channel forming a weakened line around the forepart 35 margin of the sole so .that said extended edge is held against the body of the sole with less tenac ity than the sole is held against the shoe upper whereby downward forces applied to said ex tended edge may permit said channel to open to 4,0. assure transmission of such forces to said ce mented area through said inwardly located inte gral attachment. 7 2. A method of preventing the outsole of a ce mented shoe from peeling from the upper, which comprises weakening such outsole along a margi; nal line near the outer boundary of the cemented area by forming therein a weakened slit or chan nel from its ?esh surface downwardly and in wardly toward but not to its grain side, applying cement to the ?esh surface of the marginal por tion of said sole while keeping said channel closed and excluding any save a possible slight seepage of cement from said channel, and stick ing said cemented sole margin to the bottom of a lasted upper, whereby its outer edge portion be yond said weakened channel may break down wardly away from the body of the sole except at 5,5. its integrally connected lower portion. HENRY B. GORMAN. 60.