US1740976A - Detachable heel - Google Patents

Description

Dec. 24, 1929. c, FARRAR 1,740,976

DETACHABLE HEEL Filed March 50. 1927 2 Sheets-Sheet 1 1 X1 149- 15 1a 3 '5 -30 I Z v j j 18 7 X0 8 16 i9 13 Z] 15 16 18 X0 17171671107 W Q9 Dec. 24, 1929. -A. CIFARRAR DETAGHABLE HEEL Filed March 30, 1927 2 Sheets-Sheet 2 $54 44 a'ti'o 7763 Patented Eee. 24, 1929 i ALLAN C. FARRAR, OF WHITMAN, IIIASSACHUSETTS DETACI-IABLE HEEL Application filed March 30, 1927. Serial No. 179,463.

My present invention relates to an improvement in the art of boot and shoe manufacture, and also in the art of rubber heel manufac ture, in the art of attaching a rubber heel 5 to a shoe, and includes as an improved article of manufacture the rubber heel, the attachments utilized, and the resulting boot or shoe.

It is at present customary to mold rubber heels for attachment to boots or shoes with a plurality of metal or fibre plates embedded in the rubber, which are perforated and correspond with perforations entirely through the outer or tread surface of the rubber heel to facilitate the application and driving of heel attaching nails through the open perforations, through the washers, and into the heel seat of a shoe, which nails are clinched against a plate in the bottom of the heel portion of the last on which the shoe is built.

My present invention contemplates the means and a method by which an entirely novel form of rubber heel can be made and utilized.

My present invention utilizes a rubber heel with a continuous smooth solid tread surface no openings bein formed therein, and no attaching nails being driven therethrough, and hence presenting the highly advantageous features of having a complete solid surfaced tread or top lift on the rubber heel itself. This novel feature of construction is of great importance as it insures more even wearing, prevents admission of water, dust, mud, etc., through the nail receiving openings in the old style rubber heels, and furthermore tends to more uniform wear, serviceability, and increased resiliency throughout the heel. I believe that my invention which utilizes a solid tread surface for rubber heels is a distinct novelty in this art and therefore I wish to claim the same asa-n important and improved article of manufacture broadly. V

A further feature of novelty and great importance is the fact that I so manufacture my improved and solid surfaced rubber heel with a substantially continuous nail retaining plate instead of the former old style separate washers, Such a plate embedded in the rubber during the heel molding process is preferably perforated at predetermined points fastening means.

to receive cooperating interlocking Such a plate can be, and preferably is, of metal, of any suitable tlnckness and strength, or may be of metal mesh or, in fact, may be of thin permeable metal through which the fas driven to interlock. l1ze a hard la toning means may be Furthermore I may ut1- yer of fibre, the important feature being that this layer interlocks and cooperates with the fastenin forms the further impor geous functions of stren heel,

g devices, and pertant and advantagthening the rubber equalizing the compressibility, load carrying, resiliency and wear. An important feature, therefore, in my present novel rubbroadly.

A further very novel ture in that of I believ art and Another novelty w present taching This no special sharp and clinchin ed to be driven int whether through through the sole, clinching plate, cially formed to bedded mined and nail retaining material form tli iorm of rubber first secured to a heel seat of attaching the heel f substantial plate dded within the n es the attaching ed, but also wear and use I wish to claim this feature and important feathe rubber heel art, and the attachment of the same to a shoe, consists in the fact that I attach my novel and improved heel by fastening devices the shoe, thus rom the surface opposite the outer tread surface or top lift.

e that this is a distinct novelty in this Iclaim the same herein broadly.

hich is a feature of the invention consists inthe form of atmeans which I preferably employ. velty attaching device is preferably a form of heel nail having relatively insole, and

g points on one end adapto the heel seat of the shoe, a heel base or directly against the and with the other end speinterlock with the plate emin the heel, whether this plate is wire mesh, metal, or fibre with recesses at predeterpo1nts-as preferred-01 permeable e interlocking end of Preferably I novel type of heel nail as a somewhat spear-like form, and preferably, also, this form is flat. Thus, when the heel nail is utilized to interlock through recesses, which'may be in the form of oblong openings in the plate, such nails can be readily removed, if desired, by a partial rotation of-the same so that the flat sides will ermit the withdrawal of the spear head from the interlocking openings in the plate. This nail can also be readily handled by reason of the fiat sides of the spear-like head, and preferably will be so set as to be driven through the elongated openings to spring through and by and then have the shoulders of the spear head catch and interlock with the opposite sides of the plate from which the spear head is driven. Such interlocking forms or nails I believe to be also distinctly novel, and I claim the same herein broadly.

My novel form of solid tread surfaced rub-.

ber heel prepared for attachment by the nails driven from the top or heel seat side involve a new and novel method of attaching. Briefly, this method consists in first driving the heel nails into the heel seat, or through the heel bases and heel seat,clinching the same against the plate on the heel end of the last, driving the same a predetermined distance only, and then permitting the spear ends to stand out from the heel seat-or heel baseapproximately the same distance which the heel nail retaining plate is embedded within the adjacent surface of the rubber heel. Thereupon the rubber heel is applied to the heel seat of the shoe, holes being preferably positioned and the recesses in the heel plate being positioned to register with the upstanding arrow head portions of the nails, which nails have also been driven substantially in predetermined position to register with the openings and plate recesses in the rubber heel to be applied. A slight pressure on the rubber heel, when it is applied and fitted, will thus spring the plate down and over the arrow heads, which latter spring through the oblong or other recesses, and at once interlock with the shoulders on the spear heads. Thus, my device, is a distinctly new and improved process and I wish to claim the same broadly herein.

My various inventions thus enable me to produce a distinctly new and improved boot or shoe structure with the solid tread surfaced rubber heel, and I desire to claim such completed shoe structure as an article of manufacture, and as a most important resultant and part of my invention.

While I may form my rubber heel .in any suitable and desired mold, provided with a plate embedded therein, I have designed a particular type of mold and heel, and I have also designed a preferred form of heel plate, both of which are novel and important and are claimed herein."

Further improvements, novelties, and imin cross section illustratingthe clinching of the heel attaching nails;

Fig. 3 is a plan View of a novel form of rubber heel;

Fig. is a cross sectional view on the line 4-4 of Fig. 8.

Fig. 5is a plan view of my preferred form of interlocking plate embedded in a heel;

Fig. 6 is an enlarged perspective view of a preferred form of heel nailing means;

Fig. 7 is a fragmentary view, partly in I cross section, illustrating the method of driving the type of nail shown in Fig. 6 to spring the same through the recesses in the attaching plate;

Fig. 8 illustrates a completed interlocking action of the nail and plate.

Fig. 9 is an enlarged view, partly in cross section, showing the application for attachmentof my novel form of rubber heel to the shoe;

Fig. 10 illustrates a complete action of heel attaching; and

Fig. 11 illustrates a typical heel attachment to a shoe having a heel base previously attached to the heel seat.

As shown in the drawings, a shoe 1 having an outsole 2 may be of any suitable size, style or design. To such a shoe I attach my solid surfaced tread rubber heel, here shown as a solid heel of full height from outsole to the ground without interposition of a heel base, which heel is indicated generally at 3. This rubber heel is preferably molded of special contour, preferably with a rand-like rim indicated at 5 around the surface which will fit snugly and tightly around the shoe, and with a central bearing portion 10 and a circular depression 11. This is the form I prefer, where a solid rubber heel is desired without a heel base, although this form can be utilized with the heel base, but preferably where a heel base is attached or is employed the base 36 has the rand-like rim and accordingly the rim 5 is not needed. Strengthening webs or ribs 12 may also be formed as shown in Fig. 3. In molding this heel I apply my novel type of locking plate 15. This plate, as explained, may be of metal, fibre, wire mesh, or otherwise, but preferably is formed of thin metal and with a central opening 16, and with a plurality of elongated recesses 18, these recesses being of proper width for that of the fiat sided arrow head portion of the heel attaching nailsto facilitate withdrawal of same when turned to register therewith, but to insure interlocking with the shoulders 19 of the arrow head 20 of the heel attaching nail 21 as shown in Figs. 6, 7, and 8. The flat side of the heads 22 is more clear 1y illustrated in the central nail as shown in Fig. 9. This plate 15 is embedded in the heel plate substantially as shown, and with guiding recesses 25 adapted to register therewith.

With my novel form of rubber heel thus prepared, it will be noted that the tread surface is imperforate and solid, thus pro viding the advantageous features of solid wear resisting, even resiliency without danger of tracking in mud or permitting access of water, dirt, dust, or the like. It has long been desired to have such a smooth, solid tread surface on a rubber heel, but never before my invention, so far as I am informed, has it been possible or practical to attach such a smooth tread surfaced rubber heel to a shoe without driving the heel attaching nails from the bottom of the heel. This important novelty I have accomplished, and the same will be now explained.

Vihen the shoe 1 is lasted on a last 35, (see Fig. 2) with the outsole 2 and insole 4, the clinching plate at the heel portion, as shown at 31, is ready to receive and clinch the sharp or pointed end opposite to the arrow heads 20 of my novel form of heel nails. These nails are then driven into the heel portion of the shoe, as shown in Fig. 2, or into the heel portion through the heel base 36, as shown in Fig. 11, for a predetermined distance, the nails being flattened on opposite sides and clinched against the heel plate 31, and protruding from the sole to, as shown in Fig. 2, or from the heel base 86, as shown in Fig. 11, a substantially predetermined distance. Thereupon the heel mold is applied with the projecting nails 21 fitted to register in the corresponding openings 25 leading to the re cesses 18 in the plate 15, and pressure applied through a press 40 or otherwise to spring or force the heel downwardly until the interlocking shoulders of the heads 20 of my novel form or" nails spring through the recesses 18 and lock on the opposite sides, as clearly shown in Figs. 8 and 10. The pressure is then re eased and the heel is thus secured and the shoe completed.

In the form shown in Fig. 11 my novel form of rubber heel 4 1 may be of less thick ness than the solid or all rubber heel 3 is molded with the heel plate as just described, and is applied and attached to the heel attaching nails 20 in the same manner.

It will thus be seen that I have devised a novel and improved heel structure, heel plate, heel nail, interlocking attaching arrangement, design, and form of rubber heel, method of making same with the novel plate embedded therein, method of heel attaching, and improved method of shoe making resulting at these various steps in new articles of manufacture comprising a novel form of rubber heel plate, rubber heel, nails, heel seat nailing, and rubber heel attaching, as well as the process of manufacturing boots and shoes.

Having thus described my invention, what I claim as new is:

An improved attachable outer heel member of elastic material having a layer of resilient material of greater strength than the outer heel, said layer of resilient material being embedded in and completely surrounded by the outer heel member, said layer of resilient material being provided with a series of recesses, positioned and adapted to interlock with heel a taching means, the heel seat containing surface of the outer heel having a central bearing portion, a rand-like rim, a depression between said central portion and rim, and strengthening ribs extending across the depression between the central bearing portion and the rand-like rim, the tread contacting surface of said heel being imperforate.

In testimony whereof, I have signed my name to this specification.

ALLAN C. FARRAR.

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