US1731731A - Shoe - Google Patents

Description

Oct. '15, 1929. J, F, TE HAN 1,731,731

Filed Dec. 2'7. 1 2 Sheets-Sheet 1 Oct. 15, 1929. J. F. TEEHAN 7 1,731,731

SHOE

Filed Dec. 27. 1921 2 Sheets$heet 2 Patented Got. 15, 1929 UNITED STATES JOHN F. TEEHAN, OLE BROCKTON, MASSACHUSETTS SHOE Application filed December 27, 1921.

This invention relates to the manufacture of footwear more especially to welt shoes and is designed to produce a shoe which is highly flexible and comfortable to the wearer.

In my Patent No. 1,393,730 granted October 11, 1921 is shown a shoe having an inner sole partially split lengthwise to form upper and lower layers, the upper layer being free to slip at the shank of the shoe over the lower layer to which the welt. and upper are attached. As the welt is attached to the lower layer this layer is channeled to form a stitch-receiving rib. Since for mens shoes a minimum thickness of at least four irons and for womens shoes at least three irons is required for machine channeling, additional thickness of material required for the upper layer requires the insole to be of heavy stock such as six or more irons. The

cost of this heavy stock is very materially higher than that of thinner material. The present invention, therefore, seeks to provide a construction which, while retaining the advantages of the patented construction,

permits use of thinner and therefore markedly cheaper material such as splits or even fiberboard. In certain constructions also it makes possible the complete channeling operation by machine where formerly a portion of the insole was required to be channeled by hand.

F or a more completeunderstanding of this invention, together with further objects and advantageous details and combinations of parts, reference may behad to the accompanying drawings in which Figure 1 is an inverted plan'of a completed insole.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a view similar to Figure 2 but showing a modified construction.

Figure 4 is a similar View showing a further modification.

Figure 5 is a section on line 55 of Figure 1.

Figure 6 is an inverted plan similar to Figure 1 but illustrating a further modification.

Serial No. 524,868.

Figure 7 is a plan same form.

Figure 8 is a section on line 88 of F igure 7. V

Figure 9 is a side elevation partly in secof the upper face of the tion of a shoe embodying the inner sole of Figures 6, '7, and 8.

Referring first to Figures 1, 2, and 5, the inner sole as shown comprises an upper layer of sheet material 1 and a lower layer 2 which arecemented together from a transverse line 3 at the ball of the foot to the end of the toe and. from the rear end of the shank at 4 to the heelend, the space between the lines 3 and 4 being unattached. The lower layer 2 is channeled about its margin about the forcpart and shank to form a rib 5 to which the Welt and upperare stitched in the usual manner, this rib being continuous from one side to the other of the shoe. The upper layer is preferably of grain material and the lowerlayer a split, though a fiberboard composition might be used if desired. In order 1 to further increase the flexibility of the shank portion of the insole the lower layer 2 may be slit transversely as shown at 6 in'Figure 1. Instead of cementing the layers of material together they may be stitched or both cemented and stitched if desired and in the form shown in Figure 3 they are attached only at the ball line at 30 and at the forward edge of the heel at 40, the attaching meansbeing shown as lines of stitching.

In Figure 4 is shown a further modification in which the layers are cemented in a zone transversely thereof atthe ball of the foot, the rear portions of the layers being entirely unattached. If desired an intermediate layer of fabric may be placed between the sections as shown at 7 in Figure 8 and if the fabric is not used one or both of the layers may be impregnated or coated with wax, both of these constructions being for the purpose of providingan anti-friction engaging surface for one of the layersover which the other may slide. i

In the manufacture of this insole the blanks are usually rounded together to form the upper and lower layers and if the lower layer is to be slit as shown in Figure 1 this is done I before the layers are fastened together.

After the layers are fastened the channeling operation is effected.

In certain cases it has been customary to provide an extension of the inner solo on the inner side of the shank, this extension being turned up within the upper to form a support for the inside of the foot. Where the insole is formed of a single layer it has been found impossible to channel it by the usual machines Where this extension is placed since the channel runs too' far inwardly from the margin, In the present construction, however, this may be readily accomplished. For this purpose the innersole is formed as shown in Figures 6 to 9 in which the upper layer 20 of the inner sole is provided with the shank extension- 21 While the lower layer 10 is shaped in the usual manner without the extension and may be channeled about the forepart and shank onopposite sides in the usual manner on a machine. These layers 10 and 20 are fixed in superposed relation, preferably free to move relatively at the shank, in any one of the manners above described. In Figure 8 is shown in cross section the manner in which the shank extension 21 is formed within the shoe, the upper 8 beingdrawn over the upper layer 20- and the shank extension, and made fast to the stitch-receiving rib 5 projecting from the lower face of the layer 10. When the shoe is flexedthe upper and lower layers separate at the shank as shown in Figure 9, thus insuring a very flexiblecon-struction adding much to the comfort of the wearer.

Having thusdescribed certain embodiments: of this invention it should be evident to those skilled in the art that many modi fications and changes may be made therein without departing from its spirit or scope as defined by the appended claims.

I claim:

1. An inner sole comprising a pair of rounded sole blanks attached in face to face relation, their shank portions being unattached, a continuous element for the attachment of a shoe upper carried at the 'forepart and shank onthe outer face of one of said blanks, and the other of said blanks having a port-ion extending beyond the inner margin of the shank portion of said one blank.

2. A shoe having an inner sole formed of superposed layers of sheet material, said layers being unattached at their shank portions, the upper layer only having an extension at the inner side of the shank, and a shoe upper passed about said upper layer and made fast to the lower layer only, said extensionforming a support for the inner shank portion of the foot within the shoe upper.

In testimony whereof I have aflixed my signature.

JOHN F. TEEI-IAN.

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