US1961346A - Insole - Google Patents

Description

June 5, 1934. e. GODDU 1,961,346

INSOLE Original Filed Aug. 15, 1929 Fig. 2. M

VIII/[111m Patented June 5, 1934 INSOLE George Goddu, Winchester, Mass, assignor to United Shoe Machinery Corporation, Paterson, N. J a corporation of New Jersey Original application August 15, 1929, Serial No.

386,097. Divided and this application Decemher 18, 1931, Serial No. 581,922

8 Claims. (Cl. 36--22) This invention relates to the art of shoema-king and is illustrated herein as 'embodied in an insole particularly adapted for use in the manufacture of shoes in which the uppers are secured in overlasted relation to sole members by the use of cement. This insole is of special utility when employed in the manufacture of shoes by the method disclosed in an application for United States Letters Patent Serial No. 386,097, filed August 15, 1929, in my name, of which this application is a division.

In the practice of the method disclosed in the application above referred to, an upper and an insole are assembled upon a last; cement is applied to the marginal portions of the upper maten'als and to the margin of the insole; successive portions of the upper are lasted over the insole and secured by staples to an upstanding lip of the insole; and, after the cement has set, the margin of the upper and the lip are trimmed oil with the staples.

Under some conditions it is desirable to leave the staples permanently in the shoe at the shank portion, the trimming of the upper and lip, if done at all, being done outside the staples.

Objects of this invention are to provide an insole of improved construction which will meet the conditions required in the manufacture of shoes by the method outlined above.

The illustrated insole is provided with a double lipped forepart and a single lipped shank portion, the double lip of the forepart insuring firm anchorage of the staples which hold the upper in lasted position and the single lip of the shank the upper to be lasted and permanently secured by staples to the lip without causing undue bulkiness of the upper materials in the shank portion of the shoe.

Preferably, and as illustrated, the insole is provided with a marginal recess the depth of which is substantially equal to the thickness of the upper materials and the width of which is sumcient to.

provide a surface to which the overlasted upper may be secured by cement. At the inner edge of the recess the insole is provided with a double or two-ply shoulder or lip extending along the sides of the forepar't, and with a single inwardly extending lip along the shank portion. As illustrated, the double lip at the forepart extends above the surface of the central portion of the insole and is in two sections which are unconnected at the toe-end. The inwardly extending lip at the shank portion serves when desired for permanent attachment of the upper at that portion of the shoe by staples driven through the upper and lip and clinched on the inner face of the lip.

The upper and lip are thus capable of being laid down against the shank portion of the sole or over the shank stifiener without substantial trimming of the upper materials at this portion of the shoe.

Other objects and features of the invention will become apparent by reference to the specification taken in connection with the accompanying drawing.

In the drawing,

Fig. 1 is a perspective view of an insole illustrating one embodiment of the invention; and

Figs. 2 and 3 are sections of the insole upon the lines IIII and III--III respectively of Fig. 1.

In the method of making shoes which is disclosed in the above-mentioned application-a cemented upper is worked over the cemented margin of an insole into lasted position and secured at some portions of the shoe by metallic fastenings to a shoulder or lip on the insole. Later the shoulder or lip with the attached upper and fastenings at least at the forepart are trimmed off An insole 20 may first be prepared as illustrated in Figs. 1, 2, and 3. The insole, preferably of leather, is slit inwardly from its edge face to form a marginal surface 22 extending for a distance equal to the amount it is desired to have the upper overlap the margin of the insole, which may be approximately one half men at the forepart and the same or somewhat less at the shank. This cut is made substantially parallel to the outer face of the insole and spaced therefrom a distance substantially equal to the thickness of the upper materials which are to be used. About one half of the width of the outside flap or lip formed by this cut is trimmed off and the remainder turned up into a position substantially perpendicular to the plane of the insole to form a shoulder or lip 24. Thus a marginal recess is formed on the insole over which the upper materials are to be lasted ,and to which, in the completed shoe, they are tobe held, at least at the forepart, by cement alone, the outer face of the overlasted margin of the upper materials being substantially in the plane of the central portion of the bottom of the insole. It will be noted that the lip 24 of the insole is continuous along the sides of the forepart and is discontinued at the toe-end, a gap 25 being there provided which facilitates turning up the lip 24 at the toe-end into an upright position. Since the upper is not to be secured to the toe by a continuous seam holding it to the lip, there is no From the forward end of the shank portion rearwardly to the heel breast line the lip 24 is omitted, the margin of the insole being reduced, however, to form a shoulder 26. By an inside channel 28, a lip 30 is formed which extends from the breast line along the shank and forepart at each side of the insole, the lip 30 at the forepart being cemented to the lip 24 thus forming at the forepart a substantial double or two ply rib or lip which is in upstanding relation to the bottom of the insole and presents an outer face or shoulder which is substantially perpendicular to the marginal surface 22. The lip 24 is backed upand braced by the lip 30 so that a stiff double lip is provided which affords firm anchorage for the upper staples and is not liable to be outwardly displaced by the strain of the lasted upper.

An insole thus prepared is attached in the usual manner to the bottom of a last, an upper assembled on the last and the shoe pulled over. At a convenient time prior to the lasting operation the marginal surface 22 at both sides of the insole and the corresponding opposed surfaces of the marginal portions of the upper materials are coated with water-dispersed rubber cement, or if desired pyroxylin cement may be applied to one side at a time of the upper and insole immediately preceding the lasting operation on that side. The margin of the upper at the forepart is then worked over the margin of the insole and the upper secured in lasted position to the upstanding double lip 28, 30 of the insole by metallic fastenings such as staples. At the shank portion the upper is worked into lasted position and secured against the shoulder 26 by staples extending through the lip 30 and clinched on its inner face.

After the shoe has been thus lasted and the cement has set, the fastenings used to hold the upper and insole in lasted relation, at least at the forepart, may be removed by-a trimming operation, in which the upstanding lip 28, 30 and'the portion of the upper secured thereto are removed with the fastenings, and, since the exposed surface of the overlasted portion of the upper and the outer face of the central portion of the insole are substantially in the same plane, the remaining operations, and particularly the attachment of an outsole by an adhesive or otherwise, are greatly facilitated.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. An insole for shoes having a double upstanding lip extending from the toe to the forward end of the shank portion and a single lip extending from the forward end of the shank portion to the heel breast line.

2. An insole for shoes having at its forepart a double lip or rib which extends to the forward end of the shank portion and comprises an inside channel flap and" an outside channel flap secured together in upstanding relation to the insole bottom and having at its shank portion, from the portion, the inside channel flaps and the outside forward end thereof to the heel breast line, a single lip formed by the upturned flap of the inside channel.

3. An insole for shoes having at its forepart a two-ply lip or rib comprising an inside channel flap and an outside channel flap which are secured together from the toe to the forward end of the shank portion in upstanding relation to the insole bottom and having at its shank portion, from the forward end thereof to the heel breast line, a single inside lip.

4. An insole for cement-lasted shoes having its marginal portion reduced in thickness an amount equal to the thickness of the upper materials and having at the inner edge of said reduced margin at each side of the insole a double upstanding lip extending only from the toe to the forward end of the shank portion, said upstanding lip being suitable for attachment thereto of a lasted upper.

5. An insole for cement-lasted shoes having at each side thereof an inside channel extending from the toe to the heel breast line and at each side of the forepart thereof an outside channel extending only to the forward end of the shank channel flaps being secured together along the sides of the forepart from the toe to the forward end of the shank portion to form in effect a single upstanding lip.

6. An insole for cement-lasted shoes having its marginal portion reduced in thickness an amount substantially equal to the thickness of the upper materials and having at the inner edge of said reduced margin at each side of the insole from the toe to the forward end of the shank portion only an upstanding lip suitable for attachment thereto of a lasted upper, said lips being unconnected at the point of the toe and having at the inner edge of said margin a shoulder extending from the forward end of the shank portion tothe heel breast line to which upper materials may be secured in upstanding relation to the bottom of the insole.

7. An insole for cement-lasted shoes having a marginal recess of a depth corresponding substantially to the thickness of the upper materials and having at the inner edge of said recess a lip suitable for attachment thereto of a lasted upper, said lip being double from the toe to the forward end of the shank portion'only and having a break therein at the point of the toe.

8. An insole for cement-lasted shoes having a marginal recess of suflicient width to permit an overlasted upper to be secured therein by cement and of a depth substantially equal to the thickness of the overlasted upper materials and having at the inner edge of said recess from the heel breast line to the forward end of the shank portion a shoulder to which the upper materials may be secured in upstanding relation tothe bottom of the insole and from the forward end of the shank portion to the toe a double upstanding rib, said rib having a gap formed therein at the point of the toe.

GEORGE GODDU.

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