US342461A

US342461A - Spring-heel blank

Info

Publication number: US342461A
Authority: US
Current assignee: LFK Lenkflugkoerpersysteme GmbH
Publication date: 1886-05-25
Anticipated expiration: 1903-05-25

Description

(No Model.)

P. F. RAYMQND, 2d.

SPRING HEEL BLANK.

NVENT ITN ESSI-:Sii

,35 ber of lifts therefrom without waste.

UNITED STATES PATENT OFFICE.

FREEBORN F. RAYMOND, 2D, OF NEWTON, MASSACHUSETTS.

SPRING-HEEL BLANK.

SPECIFICATION forming part of Letters Patent No. 342,461, dated May 25, 1886.

Application filed January 14, 1886. Serial No. 188,537.

To @ZZ whom it may concern:

Be it known that l, FREEEORN F. RAYMOND, 2d, of Newton, in the county of Middlesex and State of Massachusetts, a citizen of the 5 United States, haveinvented anew and useful Improvement in Spring-Heel Blanks,0f which the following is afull, clear, and exact deseri ption, reference being had to the accompany- .ing drawings, forming a part of this specificaxo tion in explaining its nature.

My invention consists in aspring-heel blank comprising two lifts of apeculiar shape united to each other and shaped to the desired form.

Referring to the drawings, Figure l is a I 5 plan view of the strip of stock from which the blank is made, representingin dottedlines the line upon which it is cut or separated into two parts. Fig. 2 is an end elevation of said strip. Fig. 3 represents the two parts or sections of zo `the strip after they have been cut and placed spring-heel blanks cut or (linked therefrom.

Fig. 6 is avertieal section thereof. Fig. 7 represents the blank as shaped by suitable molds to provide a heel-seat. Fig. S is a cross-section upon the line :u .r of Fig.'7.

A represents a strip of stock, preferably of leather. lt is cut to a width sufficient to provide the two lifts hereinafter described, and of a length to provide for the cutting of a num- This strip A is divided or separat-ed into two nnequal parts by a diagonal cut extending from the line orpoint a to the liueorpoint a, thereby forming the two strips aL a", each of which 4o has the straight edge a* and the inclined or skived edge a5. The strip a is wider than the strip a. The strip a2 is then placed upon 'the strip a3, substantially as shown in Figs. 3 and 4, to bring the straight edges a4 together, and

the inclined or skived edges ai together, as

shown in said figures, and they are secured to each other by glue, paste, cement, sewing, metallic fastenings, or in any other desirable way. The strip may then be submitted to the operation of suitable forming-dies, whereby theline of concave sections corresponding tothe heel- Fig. 9 is a 3o vertical section of a spring-heel shoe.

(No model.)

seat of the finished blanks is inade, or it may be submitted to a dinking or dieing machine for dinking or cutting out the heel-blanks therefrom 5 and in Fig. 5 l' have represented the line upon which said cutting-die or dinking device will operate, the strip being represented as long enough to make four heelblanks.

lf the heel-seathas not been formed by molding in the strip, as before described, it may be formed in the heel-blank either by molding or by removing a portion of the upper surface of the heel-blank, and in Figs. 7and 8 I have represented the spring-heel blank as molded to form the seat-cavity a'. This cavity is surrounded by the straight section or surface al. It is not always necessary that the heel-blank be thus shaped, as a great deal depends upon the shape of the last upon which the shoe is made. 1f a flat last is used, it will be necessary to provide the spring-heel blank with a formed heel-seat. lf alast considerably rounded at the heel is used, then it will be necessary or desirable to provide the blank with the heelseat..

The strip A may be formed of leather, or of any other suitable material, or one of the strips a a, preferably a, may be formed of other material than leather.

In use the spring-heel blank is placed between the insole and the outsole, the upper surface of the lift a3 being uppermost or next the under surface of theinsolc, andit is united to the insole preferably by a gang or group of metal fastenings driven throiigh the outsole into the insole.

The advantages of the invention arise from the facility and cheapness with which blanks can be made, and also from the facility with which they can be used in the manufacture of boots and shoes. Heretofore it has been the custom to build the heel upon the insole by first placing one lift thereon and securing it, then the next lift, and then the outsole-a slow and expensive method.

It is obvious that the diagonal cut maybe of such a nature as to provide two parts made from the strip A, with edges which shall be more or less inclined, according to the shape which it is desired that the complete springheel blank shall have; also, that the location ICO of the cut in relation to the edges of the strip may be varied to vary the width of the two parts a2 a3 made therefrom.

Of course, in practicing the invention, the 5 strips al a3 may be formed from separate strips or pieces-that is, it is not necessary that they be cut from the one piece of stock by the diagonal slit; but they should each have skived or inclined edges, and each bear such relation Io to each other as to width that the inclined edges when they are placed shall be brought substantially in line, as represented in Figs. 3 and 4.