US1113542A - Method of preparing insoles. - Google Patents

Description

J. OAVANAGH, JR.

METHOD OF PREPARING INSOLES'. APPLICATION FILED JUNE 15, 1914.

1, 1 1 3,542. Patented Oct. 13, 1914.

UNITED STATES PATENT OFFICE.

JAMES CAVANAGH, J R., 0F BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Oct. 13, 1914.

Original application filed March 28, 1907, Serial No. 365,142. Divided and this application filed June 15,

. 1914. Serial No. 845,187.

To all whom it may concern Be it known that I, JAMES CAVANAGH, J r., a citizen of the United States, residing at Boston, in the county of Suffolk and Commonwealth of Massachusetts, have invented certain Improvements in Methods of Preparing Insoles, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

In preparing an insole for the operation of an inseam shoe sewing machine, a stitchreceiving rib is formed on one surface of the sole near the margin from a point on one side of the sole near the heel end to an opposite point on the opposite side of the sole. This rib is formed by the action of knives which either split the edge of the sole to" form a lip which is subsequently turned up at substantially right angles to the surface of the sole, or which split the edge of the sole and form a channel and channel flap, or which form a channel or channel iiap and cut away a portion of theedge of a sole to form a shoulder.

On account of the difiiculty and practical impossibility of entering and removing the knives at the points where the stitch-receiving rib should begin and end, the knives are entered into and removed from the sole at points on the edge of the heel portion of the sole and as a result the heel portion of the sole is weakened so that it is liable to become more or less distorted during the subsequent operations of lasting and heeling the shoe. Also when the edge of the insole is split and a portion thereof turned up to form a lip, it is necessary to cut the lip at the point where the inseam is to begin and end in order to permit the portion of the lip at the heel end of the sole to be pressed down flat, this cutting operation being performed either before or during the lasting operation.

The object of the present invention is to produce an insole in which the stitch-receiving rib begins and ends at the desired points and in which the heel portion of the sole is not cut or injured.

With this object in view, the present invention contemplates cutting transverse slits in the insole at the points where it'is desired to have the stitch-receiving rib begin and end, and in utilizing these slits to enter and remove the rib-forming knife or knives so that the rib formed by the knives begins at one sllt and ends at the other, and the heel portion of the sole is not cut or inured by the knife or knives. The slits may extend into the sole at right angles to the surface thereof, but preferably extend 0bliquely toward the toe end of the sole as thereby no abrupt angle is formed at the unction of the heel and shank portions of the sole, and a better surface is provided to receive the crimped-in edge of the counter when the shoe is lasted.

The present invention will be clearly understood from an inspection of the accompanying drawing, in which- Figure 1 is a plan view of an insole provided with transverse slits to mark the beginning and end of the stitch-receiving lip; Fig; 2 is a view in side elevation of the insole illustrated in Fig. 1, showing the preferred oblique arrangement of the'slits; and Fig. 3 is a plan view of the sole after the sole has been acted upon by the edge splitting and channeling knives of a channeling machine, and after a portion of the edge of the sole has been turned up to form a lip.

As illustrated in the drawing, the insole 1 is first provided with two slits 2 and 3 which extend transversely of the sole from each edge toward the medial line and which are located at the points at which the stitchreceiving lip is to begin and end. These slits may be made by means of a hand knife or by any suitable machine adapted to the purpose. The slits preferably extend 0bliquely to the surface of the sole toward the toe end as indicated in Fig. 2.

The insole provided with slits, as indicated in Figs. 1 and 2, constitutes a complete article which is produced before the sole is subjected to the action of the knife or knives of a machine for forming the stitch-receiving rib. The stitch-receiving rib may be formed by subjecting the insole to the action of any suitable insole channeling, edge-splitting, or edge-shouldering machine. When the insole is presented to such a machine the slits 2 and 3 provide respectively an entrance and an exit for the rib-forming knife or knives so that the stitch-receiving rib begins at the slit 2 and ends at the slit 3.

In Fig. 3 a channel flap is indicated at 4:,

and an upturned lip is indicated at 5, the channel flap having been formed by the channeling knife of a channeling and edge splitting machine, and the lip havin been formed by the splitting knife of suc machine and subsequently turned up at substantially right angles to the surface of the sole. In this sole it will be seen that the heel portion of the sole is not cut or injured but is in its original flat condition, and that when the shoe is lasted no cutting operation need be erformed upon the upturned lip 5.

' It will a so be seen that the stitch-receiving rib begins and ends at precisely the desired points so that the counter can be readily lasted over the heel seat and secured in the proper position. By providing the insole with slits before the stitch-receiving rib is formed the points at which the rib begins and ends are determined with accuracy, and uniform results upon a large number of soles can be secured.

he improved insole illustrated in the drawings and above described is not claimed herein, but forms the subject matter of a separate application filed March 28, 1907, Ser. No. 365,142, of which this application is a division.

The nature and scope of the present invention having been indicated, and the manner in which the invention is to be practised having been specifically described, what is claimed is 1. The method of preparing insoles which consists in cutting transverse slits extending part way only through the thickness of the sole at the points where it is desired to have the stitch receiving rib begin and end, and in thereafter maklng a cut around the sole beginning at one of said slits and. ending at the other to form a stitch receiving rib.

2. The method of preparing insoles which consists in cutting transverse slits in the sole extending obliquely toward the toe end of the sole at the points where it is desired to have the stitch receiving rib begin and end, and part way only through the thickness of the sole, and in thereafter making a cut around the sole beginning at one of said slits and ending at the other to form a stitch receiving rib.

In testimony whereof, I have signed my name to this specification in the presence of two subscribin witnesses.

JA ES OAVANAGI-I, JR.

Witnesses:

ELIZABETH C. Oourn, WILLIAM B. Kmo.

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