US1075039A - Squeak-preventer for shoes. - Google Patents

Description

I. L. KEITH.

SQUEAK PREVENIER FOR SHOES.

APPLICATION FILED MAY 7, 191a.

1,@75,039, Patented 001311913.

. l I I I I WZ/aesses: ,Zizverator;

comma PLANOOIMPH co., WASHINGTON, n. c

pivirsp sta ns IRVING L. KEITH; or ma Earner, Massachusetts;

soUEAK-rnnvENTnn' Fort snons.

s e'cificatitmr Letters farm:

' Patented Got. 7,1913.

Application filedMay '7, 1 9131 SeriaIYNQYGQIOI.

Toall whom it may concern:

Be it known that I, IRVING L. Kin-1TH, a' citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts, have in-vented'anlmprovement in Squeak-Preventers for Shoes, ofwhich the following isaspecification.

It is a well-known fact that squeaking of shoes is usually caused by the rubbing. together of two portionsof the shoe'bott'om o'r' sole when bent, and, to prevent this, it has been common practice to place various substances, such as'tarred' felt, powdered chalk or talc bet-ween the parts which are likely to rub together. While a powder, such as powdered talc, is perfectly eif'ective in" preventing squeaking, when properly applied, as a practical matter, itis extremely difficult, in the ordinary process of shoe manufacture, to place it between the parts in the position desired, and in such a manner as to perform its intended function.

It is customary, in the manufacture of many shoes, to reinforce the outer sole by cementing a tap t'o'the'inn'er side of the sole, before the sole is attached tothe upper, the usual method being to apply a coating of cement over the entire surface of the sole fore-part, then place the tap thereon and' press them firmly together until the cement has set. However securely the tap and sole may be held together'by cement, when the shoe is worn, the constant strain due to the bending of the sole usually causes'the cement to give way, so that the tapand sole will rub on each other, causing the shoe to squeak. It is very difficult, and practically useless, when employing this process of cementing taps to soles, to place a powder between the sole and tap at this time, for various reasons. If a suitable quantity of the powder were placed on either the sole or tap it would be liable to spread over the surface thereof and prevent them from adhering one to the other, and when the freshly cemented soles were placed in a stack and compressed, they would be liable to slip out-of position. Moreover, the fresh cement would cause the powder to adhere to the cemented piece, so that the powder would be prevented from later working into the spaces where the parts rub on each other, and, in order that the powder may be effective in preventing squeaking, it must be free to work into any space which may be formed by the separation of the parts. It is not practical to use tarred felt ;between a tap and sole for various reasons, principally because it is so thick that a piece the middle portion of the sole would "preventthe tap and sole from adhering at their edges when pressed together. It is also expensive and. inconvenient to use in other relations.

The object of my invention isto provide means, whereby a powder, such as powdered talc, may be effectively employed between the different parts of the shoe to prevent squeaking thereof, and may be conveniently placed between a tap and an outer sole, before they are cemented together,-without materially increasing the cost of manufacture,-; or preventing the complete closing of the joint between the tap and sole, at the edges, and without being affected by the fresh cement which is employed, when it is inserted, so that it will thereafter be free to become distributed over the entire surface portions which may rub on each other. I accomplish thisobject by providing a suit-' able quantity of the powder, which is commonly used to prevent squeaking, and placing t=he same in an envelop'of very thin, easily frangible material, as tissue paper, or gauze, the packet tliusformed being placed, at the time the shoe isbeingmade, between the parts which would rub together, so that from the cement, which may be used to cause these parts to adhere, and when the shoe is worn, or the sole is bent, the envelop will break or be disrupted and the powder will work out or sift out into the spaces between the parts which would otherwise rub on each other.

Various embodiments of my invention are possible, some of which are shown in the accompanying drawing, in which Figure 1 is a plan view of a sole illustrating an application of my invention. Fig. 2 is a similar view showing a slight modification. Fig. 3 is an enlarged detail sectional view of a sole and tap provided with my invention. Fig. 4 is'a perspective view of a form of packet which I preferably employ. Fig. 5 is a plan view illustrating the manner in which the packet may be broken open.

According to my invention 1 provide an envelop a, which is preferably of a thin tissue paper, and which is, to an extent, impervious to cement, and, place therein a quantity of powdered talc, chalk or similar material 6.

the powder will be'prot'ectedby the envelop In the process of cementing a tap toan outer sole, for example, a coating of cement is usually applied to the outer sole 0 throughout its entire fore-part, and then, to incorporate my invention, the envelop 64 containing the powder, which has preferably been sealed therein, so that the powder will not be spilled, is placed in the middle of the fore-part, or approximately opposite the ball of the foot, which is the point at which the sole is bent to the greatest extent and is, therefore, the point atwhich squeaking is most likely to occur. The packet is of materially less size than the size of the sole, so that there will be a wide space between the edges of the packet and the edge of the sole. The tap will then be placed in position on the sole and the parts will be pressed together, so that the surfaces about the packet will be caused to adhere. As the packet is very thin and flat, the amount of powder which it is necessary to use being very small, it will not interfere with the pressing of the edge portion of the sole and tap together. That is, the package is so thin that its pressure is not in any degree noticeable and its use does not in any way detract from the value of the shoe. After the tap and sole have been sewed to the upper and the shoe is worn, so that the sole will be bent, the envelop will immediately be ruptured, as indicated in Fig. 5, permitting the powder to work out between the tap and sole and into any space where they may happen to become separated, and in this way it will prevent any squeaking when the sole is bent. While the use of this frangible powder packet, in the particular relation above referred to, is particularly desir-able, it may also be used to advantage in other portions of the shoe, where there is any liability that the parts will rub together so as to squeak; for example, it may be desirable to use the same in the shank ofthe shoe, as indicated by the packet 0 in Fig. 2, or between an inner sole and outer sole, as well as between a tap and outer sole.

The particular form of envelop is not essential, as it may be made in various forms, and of various different materials, without departing from the spirit and scope of my invention, 71. 6., may be made in triangular, or oblong form, as shown, or any other form which is best adapted for the particular part of: theshoe in which it is to be placed.

I claim 1. In combination with two portions of a 'shoe having engaging surfaces, a frangible envelop disposed between said surfaces and having a powder therein adapted to pre vent rubbing contact of said surfaces when liberated from the envelop, substantially as described.

2. In combination with two sole-portions of a shoe arranged one directly on the other, a flat, frangible envelop, of relatively small area to that of said sole portions, arranged therebetween in the middle portion thereof, said envelop having a suitable quantity of squealrpreventing powdertherein adapted to be liberated from the envelop when ruptured, substantially as described.

3. In combination with two superimposed, contacting sole-portions of a shoe, an envelop disposed between said portions, having a squeak-preventing powder therein, and adapted to permit the powder to escape therefrom when said sole portions are bent, substantially as described.

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

IRVING L. KEITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, I

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