US1195151A - Adam h - Google Patents

Description

A. H. PRENZEL.

SHOE.

APPLICATION FILED AUG. 10, 1912.

1,195,151. Patented Aug. 15, 1916.

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ADAM H. PRENZEL, OF HALIFAX, PENNSYLVANIA, ASSIGNOR, TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

- SHOE.

1,195,151. Specification of Letters Patent Patented Aug. 15, 19163.

Original application filed February 5, 1912, Serial No. 675,594. Patent No. 1,050,040, dated January 7, 1913.

Divided and this application 'filed August 10, 1912. Serial No. 714,443.

To all whom it may concern Beit known that I, ADAM' H. PRENZEL, a citizen of the United States, residing at Halifax, in the county of Dauphin and State of Pennsylvania, have invented certain Imgrovements in Shoes, of which the following escription, in connection with the accompanying drawings, is a specification, like reference characters .on the drawings indicating like parts in the several figures.

This invention relates to shoes and more particularly to spring heel or' underwedge shoes of the general type disclosed in my reissued Letters PatentNo. 13,448, dated July 23, 1912.

An object of the invention is still further to improve the construction of shoes of the. type disclosed in the Letters Patent above identified, to the end that the manufacture of shoes of the general type hereinabove referred to may be facilitated, and to the further end that a novel shoe may be roduced which is superior in quality, fit an appearance to shoes heretofore known.

A particular object of the invention is to provide a shoe in which compensation is made for the arch of the last whereby a spring heel shoe is produced having a substantially level tread surface.

Figure 1 is a perspective view showing the sole and recessed heel portion; Fig. 2 is a broken view showing the sole with the heel seat piece cemented in position in the recess at the heel end thereof; Fig. 3 is a broken view showing the sole after the breaking down or offsetting operation has been performed; Fig. 4 is a broken view showing the sole after the beveling operation has been performed upon the edge of the heel seat piece and for a short distance in front of saidpiece; Fig. 5 is a broken view; partly in section showing the sole after the channeling operation has been performed; Fig. 6 is a broken view; partly in section showing the sole after it has been molded; Fig. 7 is a perspective view of the underwedge piece; Fig. 8 is a detail view partly in sectlon of the heel end of the shoe showing the shoe after it has been turned and after the underwedge piece has been inserted and nailed in position; and Fig. 9- illustrates an alternative mode of permanently securing the underwedge in position by a line of stitches passing through the 7' heel seat piece, thev underwedge and the sole outside of the upper.

The preferred method of making the shoe constituting the present invention is disclosed and fully described in United States Letters Patent No. 1,050,040, grantedJan:

nary 7, 1913, on my co-pending application, I

of which application the present application is a division.

In carrying out my invention the sole of the shoe is first provided with a recess at its heel end substantially like that shown in Fig. 1, this recess being rovided at its front end with a beveled or inclined wall 2 and having its greatest de th at the lower end of said wall. The thinnest portion of the recessed sole is therefore located at the line of junction 4 of the front wall of the recess with the bottom 6 of the recess where there is the least wear and the thickest part of the heel end of the sole is at the rear end thereof where the greatest wear occurs.

The sole having been recessed in the manner shown in Fig. 1, a heel seat piece 8jis selected, of a thickness somewhat greater than the greatest depth of the recess, and thisheel seat piece is provided at its front end with a bevel 10 corresponding to the bevel of the front wall of the recess. The lower face of the heel seat piece is provided with a coating of cement and the heel seat.

.piece'is then temporarily secured in the recess in the heel end of the sole by pressing it into engagement with the bottom 6 of said recess. The appearance of the heel end of the sole will then be substantially as shown inFig. 2.

' In order that the upper surfaces of the heel seat piece and the forepart of the sole may be in substantially flush relation for the succeeding channeling operation, the sole 1s now subjected to pressure in such manner that the heel end of the sole will be offset with respect to the forepart of the sole sufficiently to bring the aforementioned surfaces into flush relation. The resultant appearance of the parts will be substantially as shown in Fig. 3.

The edge of the heel seat piece 8 is now beveled to furnish a surface against which the upper may be pressed during thestitching operation, the amount of the bevel determining the distance back from the edge of the sole that the upper will be located as a result of the sewing operation. This bevel 12 is preferably extended a short distance in front of the line of junction 14 of the heel seat piece with the forepart of the extending into the beveled portion of the sole a short distance upon each side. The sole is then molded in the manner shown in Fig. 6 to emphasize the shoulder and bevel so as to facilitate the stitching operation,

after which the upper is sewed to the sole wrong side out. The shoe is then turned and the heel seat piece is separated from the sole. An underwedge piece 20 is then inserted between the heel end of the sole and the heel seat piece, this underwedge preferably being of the shape shown in Fig. 7,

that is, having its greatest thickness near its forward end. The forward end of the underwedge is beveled to correspond to the bevel at the forward end of the heel seat piece.

An object of making the underwedge piece thicker at the frontend thanat the rear end is thatthereby compensation may be made for the arch of the last and that the resultant spring heel may be provided with a substantially level tread face. For lasts having different degrees of arching, underwedges differently proportioned may obviously be used. The underwedge herein shown is preferably made by compressing a lift piece of substantially uniform thickness in such manner that one end will be subjected to greater pressure than the other end, the end subjected to the greater pressure being located at the end of the heel subjected to the greater wear.

The underwedge piece having been inserted between the heel seat piece and the heel end of the sole, these three parts are united by nails 22 which are driven through. the three parts and clenched upon the inside of the shoe. If it is desired to avoid having any metal upon the inside of the shoe, these parts may be united in the manner shown in Fig. 9 by a line of stitches 24 extending through them outside the upper.

It will be seen from an inspection of Fig. 8 of the drawings that after the underwedge has been inserted and has beensecured permanently between the heel seat iece and the sole the recess at the heel end of the sole has the appearance of having been deepened. This effect may be produced in either one of two ways, either the line of junction 14: of the oflset heel end of the sole with the forepart may be caused to travel forward a short distance or the line 4: where the inclined front wall 2 meets the bottom 6 may be caused to travel toward the rear. In the first case the heel seat will travel up the inclined front wall until it comes into engagement with the newly formed incline, the stitches which bridge the junction permitting the slight forward movement necessary. The preferred mode of procedure, however, is to cause the line 4 to travel back, this being effected easily by breaking the heel end of the sole over the front lower edge of the underwedge, the nails 22 or the stitches 24 securing the parts permanently in their new relative positions.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is A shoe comprising, in combination, a sole provided at the heel end with a recess having its greatest depth near its front end, said heel end being of increasing thickness from the forward end of the recess to the rear thereof, a heel seat piece abutting at its front end against the front wall of said recess, said heel seat piece having its upper surface substantially flush with that of the sole, an upper secured to the sole and to said heel seat piece upon the inside of the shoe,

and an underwedge. thicker at its front end than at its rear end located between said heel seat piece and the bottom of said recess,

the combined thickness of said underwedge and said heel seat piece being so proportioned to the arch of the last and to the varying depth of the recess as to make the tread face of the heel end of the sole sub-- stantially level.

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

LUTHER W. RYAN, C. F. STILL.

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