US2036842A - Process of making insoles - Google Patents

Description

Patented Apr. 7, 1936 NITED STATES PATIEZN` FIQE PROCESS OF MAKING INSOLES John Joseph White, Chicago, Ill., assignor to The Florsheim Shoe Company, Chicago, Ill., a ecrporation of Illinois Application December 14, 1932, Serial No. 647,126

2 Claims. (Cl. 12-146) the margins of the insole to be curled. The rabbet is such that theedge of the insole is undercut and when the insole, upper and Welt strip are stitched together, the upper extends along the undercut edge and extends laterally away from the insole to avoid abruptness. Thus substantially the entire insole constitutes a tread for the foot of the wearer, so that curling up of the margin of the insole around the foot is precluded.

louses and the like on the foot of the wearer. Other objects and advantages of the invention 2u The shoe when in this condition causes considwill appear as the deSCrpt-e'fl proceedeerable discomfort to the wearer, and after a This invention (in a preferred form) is illusshort period of use necessitates discarding early trated in the drawing and hereinafter more fully in the life of the shoe. described. l5 To overcome disadvantages inherent in prior On the drawing: if manufacture of Welt shoes is accordingly the Figure l is a schematic bottom view of an inprincipal object of this invention. sole together with portions of the upper and welt A further object of the invention is to construct of a shoe, illustrating at different DOltiOilS there a shoe in which the feather is removed from the 0f the condition at the conclusion of various insole. steps in the manufacture of a shoe in accordance l0 It is another object of the invention to provide with the present invention. a featherless insole having a ange formed to Figures 2 t0 6 inClllSiVe are enlarged flagspace the insole from the outsole for receiving mentary sectional views as at A to E inclusive filling material, and providing a support for the respectively in Figure l, SliOWiIlg an insole right insole such that the latter will not sway or run side up, however, with an edge thereof in suc- 25 over on one side. cessive stages of manufacture; Figures 3, 4, 5, It is another object of the invention to provide and 6 showing also the manner in which the a shoe construction including an insole which upper and Welt are applied t0 the ilSOle. will not curl or wrinkle at its edges. Figure 7 is a fragmentary transverse sectional In accordance with the general features 0f the View 0f a. 8h06 COllStlllCted in aCCOldallCe With im invention, the insole is formed on its upper side the principles of this invention. throughout the entire margin thereof except for As sho-wn on the drawing: the heel, with a rabbet providing a ledge forming Referring now more particularly to the drawa continuation of the bottom of the insole. A ing, the iIlSOle i formed in accordance with the channel is formed in the bottom of the insole principles of the present invention is blanked out 35 adjacent said ledge, leaving a lip in substantial and formed in its bottom surface 2 with a marparauelism therewith, and the upper and Welt einal outwardly extending Channel 3, leaving a are secured to the rabbeted edge of the insole by lip 4 which is notched at 5 to separate the heel means of stitching through the bottom of the portions of the lip from the remainder 6 of the channel. When the welt is turned into substanlip. The upper surface l of the insole is formed 40 tial parallelism with the plane of the insole, the at the margin thereof with a rabbet 8, leaving ledge and lip extend downwardly from the inthe edge surface adjacent the rabbet undercut as sole and are cut away in the plane of the lower ShOWIl at 9. The ledge iii fOlmiIlg the bottom Of surface of the welt. This plane is somewhat bethe rabbet 8 is thereupon turned down as shown low the plane of the lower surface of the insole, at II in Figure 3. 45 and the parts rest on and are secured to the The lower margin I2 of the upper I3 is thereoutsole by stitching through the welt as is usual upon placed with its lining I4 adjacent the ledge in the manufacture of welt shoes. The space IU and inclined edge 9, and the strip of welt I5 thus enclosed receives waterproofing ller maarranged vertically against the Outer Surface 0f terial Which serves to prevent caving in of the the upper I3 and with its stitching groove I B 50 insole and yet provides flexibility, and also preoutermost and at substantially the elevation of vents squeaking between the insole and outsole. the juncture I'I between the inclined face 9 and With this construction, the secured margin of the ledge I9. With the parts thus arranged, they the upper does not underlie the marginal porare stitched together by the thread I8, the parts tions of the insole so that the upper cannot cause assuming the4 shape and relationship shown in 55 Figure 4'. The welt strip I5 is then turned into a plane substantially parallel with the plane of the insole I, with the parts then occupying the relationship shown in Figure 5. The lower surface I9 of the welt strip I5 is now lower than the bottom 2 of the insole I, and portions of the lip B, ledge I Il and, upper I3 extendl even below the said lower surface I9. The portions thus extending are trimmed even with said lower surface I9 as shownl in Figure 6, the channel formed by the lower surface 2 of the insole I and the stump Ga. of what was formerly the lip 6 is filled. The groove 2I formed by the stump 6a and the stump Illa may if desired also be filled with the filling material 2i). The outsole 22 is thereupon stitched at 23 to the welt I5, thereby completing the formation of the sole of the shoe. During this stitching operation, the upper surface of the welt I5 is trimmed as at 24.

It will be 'appreciated from the foregoing that with this construction there is substantially no overlapping of the margin of the insole with respect to the attached portion of the upper, so that the constant upward pull on the upper, during wear of the shoe, cannot result in curling up of the margin of the insole and the consequent formation of annoying ridges, wrinkles and the like. By bevelling the upper portion of the edge of the insole, moreover, a substantially smooth or unridged juncture is afforded at 25 between the insole and the upper, thereby increasing further the comfort of the shoe thus constructed. In addition, the portions Bca and Ia together constitute a downwardly extending flange which serves to space the remainder of the insole from the outsole so that waterproof Iilling material may be received in the space thus provided. In addition to the waterproofing Aand adhesive character of the lling material 2Q,

this material is resilient and thus affords further comfort for the wearer.

The construction above described is obviously quite simple, and is such that it may be made at no greater cost than the ordinary welt shoe and yet embodies a tread foundation which is level and smooth and which will remain in this condition throughout substantially the life of the shoe. Moreover, the adoption of the foregoing method of manufacture may be effected without reorganization of present and known types of welt shoe manufacturing machines, and is well adapted for commercial production.

It will be observed that the flange formed by the stumps 6a and IIJUL` is of substantial girth so that it serves not only to properly space the insole from the outsole but also to prevent the insole from swaying or creeping or treading over to one side and getting out of shape.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. The process of making an insole having a supporting ilange for providing a substantially unyielding foundation for the insole, comprising the steps of rabbeting the upper margin of an insole blank so as to provide a peripheral ledge of substantial thickness relative to its width, bending the ledge downwardly so as to project below the lower surface of the blank, forming a stitching channel in the lower side of the blank so as to terminate transversely at substantially the same level as the corner of the rabbet to provide therebetween a stitching-in portion,

bending the channel lip down alongside the ledge, and trimming said ledge and lip in a plane below the lower surface of the blank so that the ledge and lip together provide a means for propping and spacing the remainder of the insole :1;

from the outsole.

2. A process of forming a marginal portion of a shoe insole for connection to an. upper and a welt, which consists in channeling the under marginal portion of the insole to provide a free lip, rabbeting the outer edge of the insole to provide a reduced margin, bending both the lip and reduced margin downwardly to form a crosssectionally arched support for the insole and trimming the bottoms of the lip and ledge flat so that they may be flush with the bottom of the upper and welt.

JOHN JOSEPH WHITE.

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