US1352736A - Rubber shoe-sole for turn-shoes - Google Patents

Description

H. C. EGERTN.

RUBBER SHU'E SOLE FOR TURN SHOES.

APPUCAUON me!) Dc.2.191s.

1,352,736. Patented Sept. 14, 1920.

UNITED STATES HENRY C. EGERTON, F RIDGEWOOD, NEW JERSEY.

RUBBER SHOE-SOLE FOR TURN-SHOES.

Specification of Letters Patent. YPatentd Sept, 14, 1920,

Application led December 2, 1918. Serial No. 284,935.

To all whom it may concern.'

. Be it known that I, HENRY C. Eomrron, a

citizen of the United States, and resident of Ridgewood, county of Bergen, State of New Jersey, have made a certain new and useful Invention Relating to Rubber Shoe-Soles for Turn-Shoes, of which the following is a specification taken in connection with the accompanying drawing.

This invention relates es eciall to rubber or other composition soles a apted for turned shoes or the like in which a sewing Hap of fabric, which may advantageously be strengthened by more or less coating or impregnating it with rubber or other suitable somewhat flexible strengthening material, and which may also if desired be folded, doubled or reinforced to have the desired strength and thickness, is cemented or vulcanized to the rubber shoe sole and held in position thereon referably in connection with stiflening fa ri'c or fibrous elements, which may contain henolic condensation cementing and sti ening material and be held in position u on the sewing Hap layers or members. his sewing flap member may, if desired, extend beneath the convie. or other fibrous stiil'ener layers throughout their entire extent, and may be rubberized on the side adjacent the rubber sole so as to act as a connector fabric or member promoting the union of these parts. When the upper has been stitched to this sewing flap in the usual Way the sewing fiap may be turned inward and more or less contained in a seam recess formed in the shoe sole adjacent the sewing iiap; and by forcing or hammering the seam into this recess a more nearly flush joint may be obtained, which may of course be still further covered by an insole which may be inserted thereover after the shoe up er has been turned and finished in the usua Way.

In the accompanying drawing showing in a somewhat diagrammatic way various illustrative embodiments of the invention,

Figure 1 is a perspective View partly in section showing portions of a shoe sole and related members.

Fig. 2 is a corresponding sectional view showing the parts in separated position for greater clearness. f

Fig. 3 is a sectional viewr through the assembling and molding apparatus for forming such a shoe sole.

Fig. 4 is a; sectional view showing another arrangement with the parts in separated position; and

Fig. 5 is a sectional view throu h still another arrangement of shoe sole e ements indicated in se arated position in connection with a' mo d adapted for uniting and vulcanizing them.

The shoe soles which may, if desired, include integral heels in some casesmay be of any suitab e rubber or other composition and in the case of a vulcanized rubber shoe sole 1 the rubber composition may be selected with particular reference to its gri pi and wearing qualities While the desiredpstilille5 ness may be secured through the incorporation of additional stiffening layers or ,elements. Several layers or members 3 of fabric, paper or other fibrous material, suchas cotton fiber, cotton batting, paper ulp, tc. or mixtures thereof, may be usedp for this purpose and may be coated or preferably quite thoroughly impregnated with suitable phenolic condensation cementing material, such, 'for instance, as bakelite, conden site or redmanol varnish compositions. Two

layers of 8 oz. canvas thoroughly impreg nated with balrelite varnish and dried may under pressure be cemented and united t0- gether to form a strong and stiff member or stiffening sheet about a 16th f an inch thick which may ive ample stii ess to the rubber shoe sole. sindicated inFi s. 1 to 3 these st'il'ener membersB preerab y do not extend to the edges of the shoe sole 1 but are arranged a sixteenth of an inch or an eighth of an inch inside of these edges so that projecting edge portions 2 are eft around the sole to give the finished shoe a more desirable appearance. connectormember 4 of canvas or other suitable fabric ,inay advantageously be interposed between the stiffener members and the rubber sole and may be formed with reinforced or doubled edge portions projecting beyond the stiiener so as to serve as a sewing flap to which the u per of the turned shoe may be attached.

' e connector fabric may 'advantageously in most cases be formed with a5 frictioned or other rubber coating 10 on the side ad-' jacent the rubber sole and the edge portions of this connector member may be doubled back u on themselves so as to form a. doubled ge 12 adjacent the edge of the shoe sole, this part of the connector then being rated in the fabric b carried inward to a sufiicient extent to secure am )le connection with the other parts of the s oe sole, and if desired, this connector member may be turned back on itself at about the point 13 and its edges carried outward to about t'he point 12, the rubberized face of this fabric engagin the rubberized face of the adjacent fo d thereof and leaving a relatively uncoated exposed surfacerto more securely and strongly unite with the henolic condensation cementing material o the still'ener members. In some cases the fabric may be cut or gored around the curved toe and heel portions of the connector member so as to minimize undesirably doubled portions and make the sewing flap of more uniform thickness at these parts, although such additional thicknesses of the fabric are notfin all cases objectionable where ample rubber has been incorpothe original coating or otherwise during t e forming of this element. This fabric layer may of course be folded up and compressed at its doubled portions so as to secure the adhesion thereof so that a shaped piece is secured which may be more readil assembled with the other elements in mo ding the sole. As shown in Fig. 3 the sole may be molded and vulcanized advantageously by laying the coated and dried stiil'ener members 3 in the mold section 15 preferably after they have been somewhat heated to facilitateI bending and then `the connector sewing Hap member 4 may be put in place upon them and properly centered by the use of `any desired means such as locating pins or the like to insure the proper positioning of these parts, then another coperating mold element may be put in place on the bottom mold 15 so as to bend down and hold the sewing fiap. This may be effected conveniently` by having a multiple or one-piece mold element 20 adapted to coperate with the bottom mold 15 and positioned with respect thereto by the pins 18 which may have the tapered upper ends 19 coperating with holes 20 in this upper mold section. This mold section 2O may have a retainer 'lang on its inner edge which is adapted to foi-ce the sewing flap 5 downward and inward into engagement with the gripping rim 16 on the lower mold section so as to c amp it between these parts when the locking or securing hooks 38 are snapped over the coperatin pins to lock the mold sections toget 1er. e sewinrr Hap may thus be denitely and securely held in position and more or less shaped up at the same time duringrthe molding and vulcanizing of the sole. his mold section may also, if desired, be formed with a recess 22 corresponding to the edge 2 of the shoe sole, the outline of which is of course defined by the face 23 of this mold section. The vulcanizable rubber blank 1 which may be more or integree less profiled or sha ed up may then be put in place in the mol and forced into contact with the other elements therein by the top mold section, such as 25, which may in some cases be advantageously provided with the holes 2G coo' erating with the alining, pins 19. The mo d may then be heated in any desired way while under pressure so that the vulcanizing heat and pressure is' secured which simultaneously unites the elements and cures the phenolic condensation cementing material in the stiffener members so that all the parts are securely and permanently united to form a unitary sole. A heat of 250 to 320J Fahrenheit for half an hour or an hour more or less is usually suicient for this purpose, depending, of course u on'the rubber composition employed and t e particular phenolic condensation cementing material used in connection therewith.

The upper members 7 which may have the scam portions 6 may of course be sewed to the sewing flaps 5 in any suitable machine which preferably somewhat compresses the edge portinos 2 of the rubber shoe sole while this sewing is taking place so as to make a better und neuter joint. The line of this stitching 8 is indicated in Fig. 1 and when this sewing is completed the seam' may be turned over so that the seam members are bent or folded more or less into the seam recess 9 which may be formed around the sole adjacent the sewing iap as by vforming a suitable rojection 17 around the mold section for t is purpose. The seam' members may of course be hammered or forced into this recess and covered by an insole applied or cemented in place, suitable phenolic condensation cementing compositions being desirable where the stilfener members 3 are exposed on the inner side of the sole. If desired, however a rubberized facing layer, such as 14, indicated in Fi 2 may in some cases be applied to the sti ener layers and cemented thereto during the moldin operation so as to leave the frictioned or ot er rubber coating 10 exposed on the inside of the shoe sole to facilitate the cementing of an insole thereto by rubber cementing compositifns after the upper has been sewed to the so e.

Fier. 4.- shows another arrangement in whichtherubber or other composition shoe sole 27 is indicated as having substantially uniform thickness throughout. The connector sewing flap member 4 of fabric ma be folded upon itself so as to form the fol 12, the edge portion extending back to about the point 13 and additional reinforcing fabric or strips may be incorporated in this edge portion 29 to form a sewing flap of the desired strength and thickness. the edges of the connector member ma be folded outwardA to form the portion 11 which may on lits exposed side be'rela- If desiredf tively free from 'any rubberized coating so Vas to facilitate cementing union with the one or more stiflener members or `fabric or fibrous layers 3 molded thereto. As indicated in this case one or more fabric la' ers maybe inserted within the edge fo d 12 of such a connector member and this reinforcing fabric 28 which may be a heavy woven'or braided ta'pe or the like may be rubberized on both sides before being put in place so as to more effectively unite it to the other adjacent fabric portions. Such a connector sewing flap member may of course be folded and temporarily cemented or united and then assembled with the other arts and vulcanized and cemented together Vr1n the same general Way as indicated in connection with the Fig. 3 construction.

Fi 5 shows still another arrangement in which lthe sewing flap may comprise one or more braided cords, such as 31, which may advantageously be inclosed within and secured tothe edge loops 32 of the connector fabric. This may be readily accomplished by using a strip or layer 30 of light canvas or other suitable Afabric which has been given a frictioned or other rubber coating on one side and applying it to the one or more stiifener members or fabric layers 3 which may be previously inserted in the mold 34% and positioned therein as by the' locating pins 37 which may in some cases be withdrawn after the mold is closed or during the viilcanizing operation, if desired, so as to allow the holes to close during the molding operation. This connector fabric 30 may then be put in place and its edge portions Sl forced into the grooves 35 in the mold and then the braided cord 32 may be forced into these grooves and' the edge portions 33 of the connector fabi'ic may be brought back above the stiffener layers 3 so as to be carried in some cases to or adjacent vthe center portions of the shoe sole. ln some cases it is `desirable to use an additional layer of connector fabric 39 which may advantageously be coated or frictioned with rubber on both sides so as to securely imite with the connector layer and also with the rubber sole composition blank 27 which may be forcedinto place and vulcan-V ized or united to the other arts when the top mold section 36 is force home and the mold heated for the desired time.

This invention has been described in connection with a number of illustrative ein-y bodiments, forms, proportions, elements, parts, shapes, materials, compositions, methods of preparation. production and use, to the details of nliich disclosure the invention is not of course to be limited, since what is claimed as new and what is desired to be secured by Letters Patent is set forth in the appended claims:

1. T he integral rubber shoe sole for turn densation cementing and stifl'ening material i I cemented to vsaid sewing iap member so as to leave its edges projecting beyond the edges of said stiifener member.

2. The integral rubber shoe sole for turn shoes and the like which Vcomprises a sole, a rubberized fabric connector and sewing flap member united to said sole and having a reinforced multiple thickness edge portion forming. a fabric sewing flap which is adapted to be sewed to the shoe upper, a fabric stilfener member carrying cured phenolic condensation cementing and stiffcning material cemented to said connector member so as to leave the sewing flap projecting beyond the edges of said stiffener member, said sole being formed with a seam recess adjacent said sewing flap to accommodate the sewing iiap seam portions after the upper has been sewcd thereto.

The integral rubber shoe sole for tuin slices and the like which comprises a sole, a rubberized fabric connector and sewing fiap member united to said sole and having a reinforced multiple thickness edge portion forming a fabric sewing flap whichv is adapted to be sewed to the shoe upper and a fabric stiifener member carrying cured phenolic condensation cementing and stiffening material cemented to said connector member so as to leave' the sewing flap projecting beyond the edges of said stiffener member.`

4. The integral rubber shoe sole for turn shoes and the like which comprises a isole, a fabric sewing flap member united to said sole and havin a reinforced multiple thickness edge portion forming a fabric sewing flap which is adapted to be sewed to the shoe upper and a fabric stiiener member carrying cured phenolic condensation stiffening material secured to said sewing flap member so as to leave its edges Vp'r ecting beyond the edges of said stiffener me ber.

5. The shoe sole for turn shoes and the like which comprises a sole, a fabric sewing fiap member united to said sole and forming y a fabric sewing flap which is adapted to be member Carrying eurefl phenolic condensation stll'ening material semental to Said sewing flap member to Support and strengthen smid. eewng: flap.

T. 'llw Shoe sole for turn Shoes :md the like which comprises a` composition sole, :l reinforced fibrous sewing flap member united to said sole und forming a sewing flap to which 'llze shoe upper is adapted to be sewed, and a brous securing memberv carrying cured phenolic condensation Stffe# mg materlal secured to sald sewmg flap member to support and strengthen said sewing

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