US2117183A

US2117183A - Cushion sole shoe

Info

Publication number: US2117183A
Application number: US173187A
Authority: US
Inventors: Henry G Lumbard
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-11-06
Filing date: 1937-11-06
Publication date: 1938-05-10
Anticipated expiration: 1955-05-10
Also published as: USRE21656E

Description

May 10, 1938.

H. G. LUMBARD CUSHION SOLE SHOE Filed Nov. 6, 1937 Patented May 10, 1938 2,117,183

UNITED STATES PATENT OFFlCE REISSUED CUSHION SOLE SHOE Henry G. Lumbard, Auburn, Maine DEB 1 -1940 Application November 6, 1937, Serial No. 173,181

4 Claims. .(Cl. 36-19) This invention relates to cushion sole shoes and, in one aspect, comprises a novel shoe structure having a soft resilient surface throughout the entire bottom beneath the foot of the wearer,

into the cushion layer in substantial contact with shoe carries a leather heel, the ends of the attaching nails are clenched and similarly em- 5 the shoe being so constructed as to maintain bedded in the cushion layer leaving a continu- Without distortion or reduction the full measureous, soft, resilient surface beneath the heel of ments of the last. In this important respect the the wearer. shoe of my invention differs from many cushion 1 The novel insole of my invention may be emshoes heretofore available in which the cushion pl'oyed with good advantage in any shoe of the member is inserted after the last has been with- McKay lasted type such as the McKay, Compo 10 drawn, in such a fashion as to occupy space or Littleway or in any shoe having a line of which should be reserved for the contour of the stitching normally located beneath the foot of wearer's foot. the wearer, or in any other type of shoe where In another aspect, my invention comprises a it is desired to provide a continuous resilient novel insole made by uniting permanently in cushion immediately under the wearers foot. In 15 ,face-to-face contact a continuous layer of soft all such shoes a very beneficial cushioning effect resilient cushion material, such for example as is introduced and strong, long-wearing shoe cork and rubber composition, with a layer of structure achieved without any substantial in- 7 sheet insole material. Any tough and flexible crease of manufacturing cost. 2Q sheet material supplied commercially to the The features and advantages of my inventrade for insoles is suitable for the underlying tion will be best understood and appreciated layer or ply of my novel insole. While I do from the following description of a shoe made not wish to limit myself to a cork and rubber in accordance therewith selected for purposes composition for the cushion layer, this material of illustration and shown in the accompanying presents important advantages in that after it drawing in which V has been united to the base material of the in- Fig. l is a view in perspective illustrative of the sole it may be severely flexed in either direction step of preparing the insole, without ribbing or slipping and consequently it Fig. 2 is a view in perspective of the complete remains perfectly smooth in use. The flexibility shoe with portions of the upper broken away,

of the cushion layer may be further increased or and 30 mechanically controlled by providing it with a .Fig. 3 is a fragmentary sectional view through series of perforations throughout its forepart. the shank and heel part of the shoe. By opening or closing in the flexing of the insole In preparing the insole of my invention I may these perforations contribute to its flexibility as employ any tough,-flexible sheet material comwell as introduce a ventilating action in the shoe monly used for such purposes. A suitable and 35 bottom. preferred material is shown in Fig. l as a com- An important feature of my invention beposite sheet having a central section of a tough, comes apparent when the cushion insole of my flexible pulp product with transverse corrugainvention is employed in a shoe of the McKay tions rolled into its lower face and having edge 40 or Littleway type in that it permits the seam to sections I l and H of somewhat stiffer fibre board. 40 be embedded in the cushion layer and thus This composite sheet material is available in the entirely free the foot of the wearer from contact market as insole material. To this 'fibrous under: with the seam. In fact, if desired, the seam may lying ply I unite by cement in contin'uousfacebe drawn entirely through the cushion layer of to-face contact a ply l3 which is flexible, resilient the insole so that it renders directly upon the and softer than the underlying ply. This may be 45 tough base layer. A tight seam is thus seany suitable cushion material although I prefer cured without impairing in any respect the soft, to use a composite sheet of ground cork and flexible, continuous surface contacting with the rubber, comprising about 70% of cork and about foot of the wearer. 30% of rubber. This is not only valuable in its Similarly'the character of the heel seat is imcushioning effect but is light, substantially water- 50 proved not only in a shoe of the McKay type, proof and highly effective as a heat insulator. but in any shoe because of the fact that the The two plies may be permanently and securely heel attaching nails may be embedded in the united by cement under pressure and having been cushion layer. It the shoe carries a wooden heel once securely united may be treated subsequently the heads of the attaching nails may be sunk as a single integral sheet. In Fig. l is suggested 55 thestep of dieing out from this sheet an insole, the latter being so located in respect to the sheet that the stiif fibre section I! at one edge of the sheet is cut into the heel seat of the insole, while the shank and forepart includes the more flexible central section l0. Ordinarily the insoles will be cut alternately rights and lefts with the heel seat and toe portions including alternately edge sections II and ll of the underlying ply.

Having prepared the insole as above outlined, it may be incorporated in any type of McKay or cement lasted shoe. It is herein shown as employed in a McKay sewn shoe in which the upper I4 is lasted over upon the margin of the underlying ply l0-l2 of the insole leaving the cushion layer l3 extending continuously beneath the foot of the wearer. The outsole I5 is secured to the shoe bottom by a McKay seam I6 of chain stitches which pass through the insole and the body of the outsole I5, being concealed therein in a channel provided for that purpose. As shown in Fig. 3 the stitches are drawn substantially through the cushioning layer l3 of the insole and practically into engagement with the concealed face of the underlying fibre ply of the insole. The flexibility of the shoe bottom is thus improved and the stitches removed entirely from the possibility of contact with the foot of the wearer.

The illustrated shoe is shown as being provided with a wooden heel I! attached by a group of headed nails driven from inside the shoe into the heel. The heads of these nails are driven substantially through the cushion layer l3 of the insole into engagement with the underlying fibre layer I, in this way supplying a secure and reliable means of attachment and being entirely removed from contact with the foot of the wearer. It will be apparent that in shoes having leather heels attached by nails driven through the heel and into the heel seat of the sole, the clenched ends of the attaching nails will be similarly embedded in the cushion layerl3 and removed from contact with the foot of the wearer.

The insole employed in the shoe ofFig. 2 is shown as provided with a group of perforations in its forepart within the attaching seam. This is an optional feature and may be employed to increase the flexibility of the shoe bottom and mechanically control it to a certain degree. The perforations are also useful as imparting a ventilating action to the cushion layer when the shoe is worn.

It will thus be seen that I have provided a cushion surface of uniform thickness beneath the entire area of the foot, at the same time shaping the shoe to leave available the full volume of the last. While I have not shown the illustrated shoe as provided with a sock lining, it will be understood that a sock lining will usually be employed in order to improve the appearance of the inside of the shoe. The novel insole not only has all the advantages above mentioned, but has the capacity to resist long wear without disintegration, without buckling or wrinkling bemerated, it makes possible economies in the cost of shoe manufacturing which are of great importance to the manufacturer.

While I have suggested cutting the underlying layer of the insole from sheet material it will be understood that this portion of the insole can be cut to size separately from leather or other sheet material and the cushioned layer then secured to it to form the unit. The insole may be employed with good advantage in McKay, Littleway or cement shoes. It makes no difference how the lasting is done and serves equally well in tack, staple or cement lasted shoes, or in any shoe where an insole may be employed. The perforations shown in the insole need not be limited to the space within the attaching seam, but may be distributed over the entire forepart of the insole if desired without affecting the manufacture of the shoe.

For the sake of appearance a thin, flexible cover layer may be bonded to the surface of the cushion layer thus obviating the necessity of a separate sock lining. When used in a shoe having a stitched bottom the thread would have a tendency to pull through the thin cover down into and in some cases, through the cushion until it engages the harder and tougher underlying layer.

Having thus described my invention, I claim as new and desire to secure by Letters Patent,

1. An improved insole having a tough underlying ply of fibrous material which is flexible throughout the shank and forepart of the sole and stiff throughout its heel seat, and a soft flexible ply of cork and rubber composition extending continuously and homogeneously throughout the entire area of the sole and beingunited in continuous face-to-face engagement to said underlying ply.

2. An improved cushion insole having a tough underlying ply of fibrous material which is flexible throughout the forepart of the sole and stiff throughout its heel seat and toe portions, and a soft flexible ply of a cork composition extending continuously andhomogeneously throughout the entire area of the sole and being united in continuous face-to-face engagement to said underlying fibrous ply.

3. An improved cushion insole having a tough underlying ply of fibrous material which is flexible throughout the forepart of the sole and stiff throughout its heel seat, and a soft flexible ply of cork composition extending continuously and homogeneously in substantially uniform thickness throughout the entire area of the sole and being cemented in continuous face-to-face engagement to said fibrous underlying ply.

4. A cushion sole shoe of the McKay type having an insole comprising a tough underlying ply of fibrous material which is flexible throughout the forepart of the sole and stiff throughout its heel seat, 'and a soft flexible ply of a cork composition extending continuously and homogeneously throughout the entire area of the sole and being united in continuous face-to-face contact to said underlying ply, and an outsole attached to the shoe bottom by stitches pulled partially through the cork ply and into substantial engagement with the tough underlying ply of the insole.

' HENRY G. LUMIBARD.