US1983592A - Sole of shoes - Google Patents

Description

Dec. 11, 1934. L. J. BAZZONI I 1,983,592

SOLE OF SHOES Original Filed May 23, 1932 Patented Dec. 11, 1934 UNITED STATES PATENT OFFICE SOLE OF SHOES Lewis J. Bazzoni, Swampscott, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Original application May 23, 1932, Serial No. 613,008. Divided and this application April 6, 1934, Serial No. 719,343

8 Claims. (Cl. 36-245) This invention relates to the manufacture of trimming operation is slow and requires the servshoes and is illustrated as embodied in a sole of ices of a skilled operator. Moreover, when flaps a shoe. are trimmed as above described the shape of the In the manufacture of shoes it is customary to breasts of the covered heels vary in accordance cover the breast of a Louis heel for example, after with the beveling cuts made by the operator. attachment of the same to a shoe, with a heel- With the above considerations in view there is breast covering flap which is split from the grain provided a sole including a heel-breast covering side of the rear portion of the sole of the shoe. flap having at its inner side a relatively thick The flap is split from the sole before attachment elongated median rib which varies in width and 10 of the sole to the shoe and extends forwardly of which has a relatively thin marginal portion the 10 the heel-breast line of the sole and throughout the inner and outer sides of which are approximately width of the sole. parallel. In the illustrated construction the me- The heel-breast covering flap is usually of subdian rib is v-shaped the top of the V being posistantial thickness in order to withstand the wear tioned substantially at the heel-breast line of the to which it is subjected. After the flap has been flap. The rib which extends to a point below the 15 trimmed flush with the breast edges of the heel projecting portion of the breast of the heel tapers the thick edges of the flap detract from the apgradually toward its margins and merges atpearance of the shoe. Accordingly, in the better tractively with the relatively thin marginal porgrades of shoes it is customary for the operator tions of the flap. 2 to thin down the marginal portions of the flap The flap may be quickly and effectively reduced 0 by the use of a hand knife just prior to cementing either before or after its attachment to the shoe the flap to the heel breast. This is accomplished by a machine such as disclosed in application for by removing material from the inner side of the United States Letters Patent Serial No. 613,008, flap by wide beveling cuts which start approxifiled May 23", 15 332 in my name, of which the 25 mately at the respective ends of the heel-breast present application is a division. h 25 line of the flap and continue to the end of the Since the inner and outer sides of t e marfiap, the flap being trimmed by the beveling cuts ginal portion of the present fiap are parallel as to an outline which is slightly larger than the distinguished from converging as when the flaps breast of the heel. The flap resulting from such are trimmed by hand, it 15 not necessary to trim an operation is durable and is provided with thin the flap to a. reduced outline until after the 30 edges which are not subject to the objection above same has beent cemenftetflhto 1the briastl of the hfilel noted. It is common practice to tuck the end since e por ions 0 e an w 1c cover e portion of the heel-breast covering flap projectlgteial margiis ail the heeltblreatsrtialize of unfifotigig ing beyond the top-lift receiving face of the heel 1C ness an ere 0re e c ness 0 under the top-lift and accordingly it is desirable ed s f th flap are th mer e dl ss of th 35 to reduce the thickness of the end portion of the glstancBe 2 g gg g g gti s gg 1 332? reducin such fla s the bevelin cuts l y V 313m s tart at ti ie heel-brast line of th e flap n e h y formed i the k-fit in r increase in width as they approach the end of the It as be n f und pracfticgble to reduce the llifetl- 40 flap, the cuts overlapping at a point spaced from breast ap of Shoes c eager grades a Se 40 the end f the fla ed localities thereby improving the appearance It is necessary for the operator to trim the flap the g Y g y ig ff i gi to an outline slightly larger than that of the breast g e ii i z of g 'g g heel of the heel as he reduces the thickness of the latg z s the same as the Sha e of the eral margins of the flap by bevenng cuts in Order breast of the wood heel blank and tr fe breasts to insure that the edges of the flap when finally of covered heels are uniform. tnmmed to the Outline of the heel shall be of With the above and other objects and features nearly uniform thickness. In order, therefore, to in View the invention will now be described in trim the flap to a Shape which approxi the connection with the accompanying drawing and 50 shape of the heel breast, the heel must be attached pointed out in t claims,

to the shoe preparatory to trimming the flap to In th drawing a reduced outline and skiving the margins of the Fig, 1 is a perspective view of a sole provid same] To trim the flap at this stage in the conwith a heel-breast covering flap which has been struction of the shoe is objectionable since such split therefrom;

All

Fig. 2 shows the sole illustrated in Fig. 1 after the heel-breast covering flap has been reduced at selected localities in accordance with the present invention; and

Fig. 3 is a perspective view of the rear end of an inverted shoe including the sole illustrated in Fig. 2.

In the manufacture of shoes provided with Louis heels it is customary to split material from the grain side of the rear portion of a sole 22 (Fig. 1) thereby to provide an unreduced heelbreast covering flap 24 which in the finished shoe is cemented to the breast of the heel. The flap 24 should be of sufficient thickness. to prevent it from being easily torn. When the unreduced flap 24 is laid upon the breast of the heel and is trimmed flush with the breast edges of the same the thick edges of the flap are of objectional appearance. It has been found by experience that the area of the flap which covers the central part of the projecting laterallyconvex portion of the breast of the heel should be of substantial thickness in order that the flap shall not tear or split along its heel-breast line 32 and shall not be worn out by rubbing the breast of the heel against objects such, for example, as the rung of a chair. It is also desirable that the portion of the flap which covers the lower part of the breast of the heel be thin in order that the breast of the finished heel shall approximate as nearly as practicable the breast of the uncovered heel. Furthermore, it is sometimes the practice to tuck the end portion of the flap under the top-lift and for this further reason it is desirable that the end portion of the flap be fairly thin.

With the above considerations in view it is common practice for the operator after pressing the flap by hand against the breast of the heel for the purpose of imprinting an outline of the breast of the heel upon the flap, to remove material from the inner side of the flap and to trim the flap to an outline slightly larger than the outline of the heel breast by beveling cuts each of which starts at the heel-breast line of the flap and extends to the end of the flap. The end of the flap is also trimmed by a bevelizng cut when it is desired to tuck the same under the top lift of the heel. After the reduced flap has been cemented to the breast of the heel it is trimmed to the outline of the breast of the same.

The hand skiving operation which is slow and requires the services of an experienced operator is not always satisfactory since the edges of such flaps are not always of uniform thickness and occasionally in making the beveling cuts the operator thrusts his knife through a portion of the flap which is to cover the heel breast. In order to eliminate the hand operation applicant has provided the above-mentioned machine which is disclosed in application for United States Letters Patent Serial No. 613,008. Such machine is constructed and arranged to remove material at selected localities from the inner side of the flap either before or after the sole has been attached to the shoe. It has been found preferable, however, to remove material from the sole before the sole is attached to the shoe.

The illustrated sole which may be advantageously reduced at selected localities by the above machine is provided with a heel-breast covering flap 42 comprising a v -sl1aped rib 44 which is of substantial thickness and tapers toward its apex 46 as well as toward its sides from a central base portion 48 thereof. The marginal portion 50 of the flap 42 surrounding the rib 44 is of uniform thickness, the inner face 52 of the flap being substantially parallel to the grain face 54 of the flap. The lateral base portions of the V-shaped rib 44 curve sharply away from the respective edges of the flap and intersect the edges of the flap at the heel-breast line 55. The shank portion 5'7 of the flap is of uniform thickness throughout its extent.

The rib 44 which extends from the ends of the heel-breast line 55 to a point below the projecting portion of the breast of the heel is of suihcient thickness to insure that the heel-breast flap shall not split across its breast line 55 due to the flexing of the shoe during the application of walking pressure and shall not be easily worn through by engaging pressure of the projecting portion of the breast of the finished heel with different objects. It will be understood that the length of rib may be varied.

After the flap has been cemented to the heel it is trimmed flush with breast edges of the heel, the edges 56 (Fig. 3) of the applied flap being thin and of uniform thickness throughout their extent. It will be noted that regardless of the outline of the breast of the heel each of the edges 56 is of uniform thickness since the marginal portion 50 of the flap is of uniform thickness.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. A shoe sole provided with a heel-breast covering flap having at its flesh side a relatively thick longitudinal median rib which is of varying width and is beveled along its marginal portions, said flap including relatively thin lateral marginal portions of sufficient length to extend from the top to the bottom of a heel to which the flap is to be secured, the inner face of each marginal por tion being approximately parallel to the outer face of such portion and forming a substantially continuous surface with the heel engaging face of the rib.

2. A shoe sole provided with a heel-breast covering flap having at its inner side a relatively thick elongated median rib which varies in width throughout substantially its entire length, said flap having relatively thin lateral marginal portions, the inner and outer sides of which are approximately parallel.

3. A shoe sole provided with a heel-breast covering flap having at its inner side an elongated median rib which extends lengthwise of the flap and which is of decreasing width from the heelbreast line of the flap, said flap also including a thin marginal portion which surrounds the rib and is defined by inner and outer surfaces arranged approximately parallel to each other.

4. A shoe sole provided with a heel-breast covering flap having at its inner side a substantially thick elongated ri'o which extends over a substantial portion of the width of the flap in the vicinity of the heel-breast line of the flap and tapers widthwise as it extends toward the end of the flap, said flap having relatively thin lateral marginal portions the inner and outer sides of which are approximately parallel to each other.

5. As a new article of manufacture, a boot or shoe sole having its rear end portion divided horizontally throughout its width and adjacent to the tread side thereof from the back of the heel part forwardly into the shank part a substantial distance beyond the position to be occupied by the breast of a heel, said sole being provided with a thin breast-covering flap having at its inner side a narrow relatively thick longitudinal median rib of varying width which is beveled along its marginal edges, and provided with a relatively thin side marginal portion formed at each side of the rib and of sufiicient length to extend from the top to the bottom of the heel, the inner side of each side marginal portion of the flap being approximately parallel to the outer side of such portion and forming a substantially continuous surface with a corresponding beveled margin of the rib.

6. As a new article of manufacture, a boot or shoe sole having its rear end portion divided horizontally throughout its width and adjacent to the tread side thereof from the back of the heel part forwardly into the shank part a substantial distance beyond the position to be occupied by the breast of a heel, said sole being provided with a thin breast-covering flap having at its inner side a narrow relatively thick longitudinal median rib of varying width which is beveled along its marginal edges and provided with a relatively thin side marginal portion formed at each side of the rib and of sufiicient length to extend from the top to the bottom of the heel, the inner side of each side marginal portion of the flap being approximately parallel to the outer side of such portion and forming a substantially continuous surface with a corresponding beveled margin of the rib and the shank portion of the flap being of gerater thickness than said marginal portions and having inner and outer surfaces which are approximately parallel.

7. As a new article of manufacture, a boot or shoe sole having its rear end portion divided horizontally throughout its width and adjacent to the tread side thereof from the back of the heel part forwardly into the shank part a substantial distance beyond the position occupied by the breast of a heel so as to provide a thin breast-covering flap, said flap having upon its inner side a narrow relatively thick longitudinal median rib and formed at each side of said rib with a relatively thin side marginal portion of a length to extend from the top to the bottom of said heel, the inner and outer faces of each side marginal portion being approximately parallel and the shank portion of said flap being of greater thickness than said side marginal portions and having inner and outer surfaces which are approximately parallel.

8. As a new article of manufacture, a boot or shoe sole having its rear end portion split horizontally throughout its width and adjacent to the tread side thereof from the back of the heel part forwardly into the shank part a substantial distance beyond the position of the breast of the heel so as to provide a thin breast-covering flap, said flap having upon its inner side a narrow relatively thick longitudinal median. rib and formed at each side of said rib throughout the length of the latter with a relatively thin side marginal portion of suificient length to extend from the top to the bottom of a heel, the inner and outer surfaces of each side marginal portion being approximately parallel and the shank portion of said flap being of greater thickness than said side marginal portions and having inner and outer surfaces which are approximately parallel.

LEWIS J. BAZZONI.

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