USRE13715E - William b - Google Patents

Description

Reissued Apr. 21,

W. B. GREENE. METHODOF MAKING SOLES. APPL IGATION FILED AUG.4,1913.,

wime S 5 es I 71/ van/for.- willlzjanvfl (9780710 MW -W WIDLIAM B. GREENE, OF NATICK, MASSACHUSETTS.

. METHOD OF MAKING SOLES.

Oflginal No. 1,008,640, dated November 14,- 1911, Serial No. 629,344. Application for reissue Specification ofReissued Letters Patent. Reissued Apr, 21', 1914,

filed August 4, 1913. Serial No. 782,997.

To all whom it may concern Be it known that I. VILLTAM B. GREENE, a citizen of the United States, and resident of Nat-ick, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Methods of lVIaking Soles, of which the following is a specification.

This invention has for its object, first, to enable relatively thin sole-leather to be employed in the manufacture of outer soles for boots and shoes, without presenting an undesirably thin edge.

The invention also has for its object to increase the durability of a sole leather outer sole by compressing the interior body portion of the sole while leaving the marginal edge relatively thick so that the sole when assembled in the shoe presents an appearance of greater thickness; and. in the illustrative embodiment herein shown to provide on the flesh side of the solo a depression, the margin of which extends substantially parallel with the trimmed edge of the sole and forms an abutment or shoulder for the inwardly turned portion of the boot or shoe upper. the portion of the upper which lies on the outer sole being therefore depressed somewhat. below the exposed marginal portion of the flesh side of the outer sole. y

The invention consists in the improved method of making the sole, a's herinaitter described and claimed.

,Uf the accompanying drawings forming a part of this specification; Figure l represents a top plan view illustrating suitable means for producing the sole and practising the method constituting my invention; Fig 2 represents a section on line 2-2 of Fig. 1 illustrating the first step of the method; Fig. 3 represents a view similar to Fig. 2 illustrating the second step and Fig. 4- represents a perspective view of the completed sole, a portion of the same being broken away. i

The same'reference characters indicate the same parts in all the figures.

To illustrate one way of carrying-out my invention, I take an outer sole 12 which'has been cut by a .die togive its edge the usual form possessed by an outer sole prior to the per.

final trimming and burnishing operations, and place the same. with the grain side 13 downward, on a' suitable bed or support 14. formed to cover the entire area of the grain side, said bed being preferably flat. I conline the edge of the sole in such manner that it cannot be expanded to increase the area of the sole, the confining instrumentality here shown being a curb or die, preferably composed of two sections '15 and 15*, the inner sides of which are formed accurately tit and bear closely on all parts of the edge of the sole. For convenience in removing the completed sole, the sections 15 and 15, are separable from each other, the section 15 being here shown as being rigidly attached by screws 16 to the bed let While the section 15 is movable toward and from the section 15, suitable means being employed to rigidly hold the section 15" in its confining relation to the section 15. In Figs. 1, 2 and 3, I have indicated movable struts 1'7 hinged to the section 15* and adapted to be operated by means not shown, to move-the said section toward and from the section 15. The sole, supported and confined as described, is next subjected to pressure which forms an indented central area in its flesh side, and compresses this area, the pressing instru mentality here, shown being a platen 18 which is movable toward and from the bed 14 and is of smaller area than the sole, the platen being solcshaped and arranged so that its edge is parallel with the inner surface of the curb or die and is separated therefrom by a continuous space preferably about one-quarter of an inch in width. The platen is moved from the position shown by Fig. 2 to that shown by Fig. 3 by suit able meclmnism not shown, adapted to force the platen into theflesh side of the sole and thus form the indented central area 19, the

sole being suitably moistened or in tem- The pressure imparted by the platen 18, and the confinement ofthe edge of the sole by the curb, result in the formationof an ofi'set marginal area 20 surrounde ing the indented area 19.] which-not being compressed is relatively thick. Said marginal area-is composed in part of material displaced from the central portionof the sole by pressure of the platen 18 thereon.

The displaced material is prevented by the i by the pressure of the displaced material 65 curb from moving outwardly to increase the .against the edgeconfining curb and having area of the sole so that its displacement is i a permanent thickness which is greater than transverse to the faces of the sole. The the-natural thickness of the leather.

thickness of the marginal portion of the In cutting out a sole by a die the edge of sole, of which the offset area forms one the sole is usually left by the die somewhat side, is therefore at least as great as and inclined or beveled so that the area of the usually considerably greater than the natfleshside is somewhat less than that of the ural thickness of the leather, while the grain side as indicated by Fig. 2. This 10 thickness of the portion of the sole, of which bevel of the edge requires the removal of the indented central area forms one side, is more material from the grain side than considerably less than the natural thickness from the flesh side by the trimmer to give of the leather. The displacement of the material in forming the offset area 20 causes the edge the desired form, waste of material being thus caused. The redistribution of 15 the compression or compacting of the edge of the sole against the inner surface of the the material at the marginal portion of the curb to a relatively small degree and not sole above described, expands the marginal ,80.

enough to make unduly difiicult the operation of sewing through the marginal area port-ion of the flesh side and the portion-of the sole edge adjacent thereto, sufficiently 2o 20. The described method results in the formation of a sole, the interior body por to remove the bevel .and leave the entire tion of which ,is substantially compressed edge at right angles with the sides of the sole. The width of the raised marginal and the edge 'of'which is relatively thickened and does not lose its increased thickarea 20 is such that the final edge of the sole formed by the trimmer, is wholly outsidepf 25 ness after the removal from the pressing surfaces.

the shoulder forming the margin of the m- It is to be understood that the edge pordented area.

I intend the term sole as herein used to I be generic and to include what are usually tion of the sole thusleft relatively thick is known as taps, slip soles, half soles, etc. also of more open texture than the com-' I claim: 4

30 pressed body of the sole, the fibers of the 1. The herein described method which leather being open and approximately in as, consists in confining a sole-blank in a die or satisfactory a condition for permitting stitches to be readily passed therethrough as in the untreated sole.

curb substantially encircling its edge, and

35 I find that I am able, by treating a sole 'in the manner described, to so increase the subjecting the same pressure exerted upon the sides of the blank in a manner to subthickness of its edge that the edge will require a trimming tool' or iron, as it is techstantially and permanently compress the interior body portion of the blank while leavin a marginal peripheral portion of such nically termed, *of considerably greater 40 width than would be required by a sole of the thickness of the original leather.

blink substantially uncompressed.

The thickness oft-he edge of an outer sole 2. The' herein described method which is customarily designated in shoe factories consistsin confining a sole-blank in a die or curb substantially enclrclmg its edge, and

by the size or number of the trimming iron 45 for which it is adapted. I have succeeded subjecting the same topressure exerted upon in so increasing the thickness of-the sole the sides of the blank in a manner to substantially and permanently compress the incdge in the manner described, that while the original thickness of the leather was such terior body portion of the blank while leavas to require a No.7 iron, the thickened edge ing a marginal peripheral port-ion of such 50 requires a No. 9 iron. These numbers are given merelyas examples, it bein g feasible to blank of more open texture and substan tially thicker than the interior body portion.

increase the thickness of the sole edge by one or more irons.

3. The herein described method which consists in confining a sole blank in a die or curb substantially encircling its edge, and

, 'The sole produced by my improved 55 method. is characterized by a substantially flat grain side and a iiesh side having an subjecting the same to pressure exerted upon the sides of the blank in a manner to subindcnted central area and an offset marginal area, said indented area forming one surstantially and permanently compress the interior body portion of the blank while leaving a marginal peripheral portion in such condition that stitches may be readily passed thorethrough. face of a portion of the sole which has a i. The method ofthickening the edge of 60 thickness less than the natural thickness of a sole leather outer sole which consists in the leather where the marginal area interconfining the said edge against outward dis sects the edge oi the sole and is composed in placement tending to enlarge the area of part of material displaced from the central the sole and, while the edge is so confined, area. the said edge being molded or formed supporting the entire grain side oithe sole and subjecting a portion of the flesh side of finement of the edge of the sole causing a less area than the entire area of the sole to permanent increase in thickness of said marpressure tending to reduce the thickness ginal portion. thereof while leaving the marginal portion WILLIAM B. GREENE.

5 beyond said compressed portion free to eX- Witnesses: I

pend in a direct-ion'transverse to the face of WILLIAM O; CUTLER,

the sole only, the said pressure and the con- WILLIAM A. MOEWAN.

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