US1434521A - Method of making soles - Google Patents

Description

F. E. BECKMAN.

METHOD OF MAKING SOLES. APPLICATION FILED ozcfl, 1920.

Patented Nov. 7, 1922.

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, M4, wwmag F. E. BECKMAN.

METHOD OF MAKING SOLES.

APPLICATION FILED 05c. 1, 1920.

1 A34, 52 1 Patented Nov. 7,1922.

2 SHEETSSHEET 2.

Patented 7, i922 FRANK E. BECKl/IAN, O1 HAVERI-TILL, Id.

llEAC'i-LINERY COBPOEATZGN, OF PA'LtERig JERSEY.

Original application filed March 16, 1920, Serial No.

DIETHOD IMAKING 1, 1920. Serial No. 427,526.

T 0 all whom it may concern.

Be it known that I, FRANK E. Enoirinin, a citizen of the United States, residing at l'faverhill, in the county of Essex State of Massachusetts, have invented certain new and useful improvements in Methods of Making Soles; and i do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains toinahe and use the same.

lhe present invention relates to methods of making soles boots and shoes and more particularly to a ll'lG'thOCl of moulr iing or breakin down the mars ins of soles for b o p turn shoes.

Heretofore it has been the practice to breakdown the margins of turn soles by the application of progressive pressure, the margin of the sole being fed progressively past thepressure applying or moulding instrumentalities of a machine such, for example, as the Goodyear power moulding machine disclosed in Letters Patent of the,

United States, No. 1,110,631, granted tember 15, 1914, to l/Villiam (J. Meyer. it has been found dil'licult-to practice the above described method upon soles having en tremely pointed: toes without distorting the toe and thus spoiling the lines of the shoe When finished.

The object of the present invention is to avoid the-disadvantage of the method just described, by providing an improved method of moulding the margins of turn soles, the practice of which Will eliminate all danger of distorting the toe of the sole during the moulding operation.

With this object in View, the present invention consists in the novel method of moulding the margins of turn soles hereinafter described and then particularly pointed out in the appended claims,

In carrying out the method, it is preferred to practice one of the steps thereof by means of a moulding machine or press such as that disclosed. in the inventors co-pendins; application filed March 16, 1920, Serial No,

366,265, from which the present application is a division. Another step involved in the method constituting tie present invention consists in moulding by progressive pressure, the portions of the sole margin at the View, in side elevation, of the opposite lateral edges of the sole. Preferably, but not necessarily, this step is perrormed after the completion of the toe moulding operation. This step may be practiced by any suitable iple as that disclosed in said patent to Meyer, hereinbefore referred to. r71 1 lhe present method Will be explained "vs 1th the assistance or the accompanying c1 swings llnst:

above-mentioned Serial lo. 866,265. i

In the drawings, Figure l is frontelevation, of the machine;

cop-ending application mould supporting members of the machine; Fig. 3 is a plan view of the upper r male mould pporting head, detached; ig. e is a plan new of the lower or female mould, detachec ri 5 is a perspective view of the fore l a turn sole after its toe has been moulded; and Fig. 6 is a cross-seotionai view of the sole shown in Fig. 5, the view beingtalren on the line 66 of said figure.

To facilitate a clear understanding of the method constituting the because of inaccurate rounding, is reshaped the exact outline required for perfect shoemalzing. The moulds are of such proportions as to break down the margin of the sole for a distance of about one anduonehalf inches j cm the tip of the toe, i. e, to about the tip line. The soles are in temper when subjected to the operation of the toe moulding machine andare left under brief sustained pressure to permit the moulded. margin to set. Thus, after re- Divided and this application filed December machine such, for

v ting a. machine having the same construction and mode of operation as tile machine disclosed in the inventors' a view, in- Fig. 2 1s a present invention, the construction of the machine which it is described in i devices comprise a mould moval from the machine, themoulded soles may be handled without harm to the toe end, since the broken down margin is stiff and immovable.

The machine illustrated in the drawings, comprises a table 10 supported at a convenient height and provided with a base block 1.2 having oppositely disposed ears 14. The lower or female mould block 16 is removably secured to the base block 12 by screws 1'? threaded into definitely located receiving bores in the ears 14.

Above the mould block 16 is a vertical bearing 18 carried at the forward end of the overhanging frame 20 which rises from the table at the rear end of the base block 12. A plun 22 is fitted to slide in this hearing, to the upper end of which is suitably jointed the rod 2% of aneccentric strap26 embracing an eccentric 28 on the forward end. of a power shaft 30 driven by a pulley 32. Two journals for the shaft 30 rise from the frame 20' of which controlled by a clutch (not shown), operated by a treadle attached to the rod 36, designed to provide for a sustained pressure on the sole placed between the moulds as is common to presses of this general type.

The upper or male mould is secured to the lower face of a. split block or head 38 having the construction shown in Figs. 1 and 3, a bolt 4-.0 serving to clamp it on the lower end of the plunger 22. A centering pin a2 (dotted lines Fig. 1) serves to locate the head on the plunger and a pair of guide pins 14 engage bores 46 in the lower mould block 16. The male mould is thus exactly centered over the female mould.

In order to avoid frequent adjustment for size or style it is desirable to provide each mould block with a series of moulds, each couple differing from the others. In the illustratedembodiment of the invention each block is provided with three moulds representing three different sole widths. The

, lower block 16 is'formed in one piece the female moulds being produced by recesses 428 of the required formation, i. e., generally triangular, in its upper face. The male moulds 50 are independent of each other, each mould being received and located on the lower face of the b ock 38 by a centering pin 52 (dotted lines Fig. 2) and removably held in positionby a set screw 54 passing through an ear 56 which bears against'the front face of the block 38. The machine will be equipped with such additional mould couples as may be required for all the styles and widths used in any particular factory and it will be observed that the mountings described provide for speedy interchangeability. This forms an important feature of the invention.

The moulds are so designed as to break the forward one 34 only shown. The revolution of the shaft 30 is is not essential but it is desirable since this wall serves as a gauge to correctly locate t?" toe of the sole above the cavity'formed. the inner wall 58. The lower surface t (Fig. 1) of the male mould is so proportioned as to form the break on the grain side opposite the shoulder on the flesh side when the descent of the plunger 22 forces the two moulds together. The obliquewalls 59 and 61 of the two moulds are of such angularity to the horizontal surfaces as may be required to give the desired offset to the margin of the sole which may have been shouldered for incorporation in either a. mockwelt or a feather edged turn shoe.

In using the press a turnsole, which has first been fitted with a marginal shoulder by a suitable stock fitting machine such, for eX- ample, as disclosed in Letters Patent of the United States to Frederic E. Bertrand No. 1,030,704, granted June 25, 1912, is placed with its toe end within and in contact with the wall 60 of the proper sized lower mould. The body portion of the sole extends outwardly through the open end of the mould recess and may be held by the operator without danger of injury to him. The clutch is then thrown in and the upper mould 50 descends forcing the shoulder down within the lower wall 58 thus reshaping the toe should this be necessary. The oblique walls 59 and 61 of the lower and upper moulds grip the margin outside theshoulder and cooperate to break it down to the extent permitted by their obliquity to the horizontal surfaces of the mould couple. It will be observed, as shown more particularly by Fig. 4, that the ends of the female mould walls are flared at the open end of the mould so as to avoid. an injurious break at the tip line and provide for a merging of the moulded margin into the unmoulded margin to the rear thereof.

As hereinbefore explained, the portions of the sole margin at the opposite lateral edges of the sole may be moulded or broken down in any convenient manner either before or after thetoe moulding operation. Preferably this step in the method of moulding the Sole margin will be performed by the progressive pressure type of machine heretofore mentioned;

The present inventor believes himself to be the first to practice the herein described method of completely moulding the margins of turn soles having pointedtoes, partly by a sustained moulding pressure and partly by progressive pressure. Those skilled in the art will recognize the advantage of moulding the margin at the toe 01 a pointed toe sole by means of a sustained pressure Which will eifeotively prevent distortion and act to reshape the toe it this is required.

Havin thus described the invention and the preferred method of practicing it, it is definitely stated in its true scope in the following claims.

lVhat is claimed is:

1. The method of making turn soles which includes the steps of moulding the margin about the end of the sole by a sustained pressure, and moulding the margin at the sides of the sole.

2. The method of making turn soles Which includes the steps of breaking down the margin about the toe With a single sustained moulding pressure, and breaking down the margin at the sides With a progressive pressure.

3. The method of making turn soles Which includes the steps of moulding the margin about the toe While the sole is held from movement relatively to the moulding means,

and moulding the margin at the sides by feeding the sole past suitable pressure applying means.

4:. The method of making turn soles Which consists of producing a marginal shoulder, moulding the margin outside said shoulder by means or a sustained pressure extending about: the toe and rear-Ward from its tip to substantially the tip line, and moulding the remaining portions of the margin outside the shoulder by a progressive pressure.

5. The method of making turn soles which includes the steps of applying moulding pressure to the margin simultaneously throughout its length about the tip of the toe, and applying progressive pressure to portions of the sole margin at the opposite lateral edges of the sole.

6. The method of making turn soles Which consists in breaking down the margin of the sole in two stages, to Wit: at the lateral edges thereof and about the tip of the toe, the latter stage employing simultaneous pressure throughout the margin from one side 01" the tip of the toe to the other.

FRANK E. BECKMAN.

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