US526890A - Apparatus for molding spring-heels - Google Patents

Description

(No Model.) I v I J. P...,B-USFIBLD@v APPARATUS FOR'MDLDI'NG SPRING HEELS.' Nog-526,890. y VfPateaIWeN'001:. 2, .1894.

UNITED f SEEEES PEEEEE oEEIcE..

JAMES P. BUSFIELD, oF HAVERHILL, MASSACHUSETTS.

APPARATUS Fo'R" MQLDIN o. SPRING-H EELS.

'SPECIFICATION forming part of Letters Patentino.' 526,890, dated october 2,1894. Application mea May is, i894. stanno. 511,675. (No model.)

To all whom/jt' may concern.- t Y Be it known that I, JAMES P. BUSFIELD, of Haverhill, county jof Essex, State of Massachusetts, have invented an Improvement in Apparatus for Molding Spring-Heels, of which the following description,in connection with the accompanying drawings, is a specification, like letters and figures on thedrawings representing like parts.

In another application, Serial No. 506,168, filed April 3, 1894, I have shown and described an apparatusV for molding spring heels, consisting of a two-part mold, one of the parts having a heel-forming depression,in which is arranged apivoted support for the heel 4end of the sole, the other of said' parts being provided with a heel-forming projection which co-operates with the said depression to mold the heel in the sole and form the proper break at the breast ofthe heel.

In forming springy heel soles .from the cheaper grades of leatherv in an lapparatus such as shown anddescribed in my said application, I have found that there is atendency of theleather to crinkle inthe bends at the edges of the. breast of the heel, owing to the rubbing action of the nearly vertical walls of the co-operating parts of the mold which form the break at the breast of the heel. I have accordingly conducted experiments to devise au apparatus in which to mold spring heel soles on the principle disclosed in my said application, yet without crinkling the sole in the bends of the breast of the heel, even in the cheaper grades of leather, and I'have found that the crinkling may be avoided by bringing the heel forming projection down upon the sole first at some distance back of the shoulder at the breast of the heel-forming depression, and after the sole has been partially molded in the said depression, giving to the said projection a forward movement toward the said shoulder to press the offset in the'sole tightly against the said shoulder to form the breast of the heel, there being no rubbing of the co-operating shoulders past each other, but a bodily forward movement pressing the leather against the shoulder of the depression.

In the drawings, Figure 1 is a side view of a two-part mold embodying vmy invention, .the two parts being separated in readiness to receive the heel blank; Fig. 2,a vertical longitudinal section of Fig. 1, showing a sole in position, the dotted lines representing the two parts pressed together; Fig.3, a top or plan view of the lower part of the' mold, and Figs.- 4 and 5, sections `respectively on the dotted lines :1c-0o, x-x, Fig. ,1.

Referring to the drawings which illustrate 6o the preferred construction embodying myinvention, A and Bare the two parts of the mold, the same being providedjwith suitable guide pins m, m, whichbring the parts al- Ways into register one with'the other, the part 65 Bhaving the heel-forming depression-b in which is arranged the pivoted table c pivoted at c and acted upon by a spring c2, all of which, together with'the adjustable gage d, are and may be substantially like the parts similarly lettered in my application, Serial No. 506,168, referred to. t In the present construction the part A of the mold is provided with a cross groove or slot having parallel inclinedwalls f,lf, in which is'arranged the'yielding heel-forming block f properly rounded at its under side at f2 to give the desired curvature to the heel. The block f is retained in its grooveagainst lateral displacement by two side plates g, g, 8o

screwed at gX to thepart A, and each provided with av diagonal slot g in which playsa screw g2 on the side of the block.

The part A is chambered at its top, as best shown at ctx Fig. 2, and in the bottom of this chamber is secured at n a suitable spring, shown as a flat spring n', which at its outer end rests upon that edge of the block f which is adjacent the breast of the heel. The inner face of the block f" constitutes a shoulder which co-operates with the shoulder b2 in the depression b to form the break at the breas of the heel.

The operation of the device is as follows:-

The blank s is placed between the A two parts of the mold and upon the part B, as best shown in Fig. 2, its heel endbeing sustained upon the pivoted support c, as in my previous application referred to. ,The two parts of the mold are now brought together, vand it will be roo seen that the lower edgeof the shoulder f of the block f rst engages the surface of the blank at or near the point marked l Fig. 2, that is, at a distance from the shoulder b2 equivalent to about twice the thickness of the blank, more or less. As. the twof parts of the mold come together, the block f', held in its lowermost position by the spring la', presses the heel end of the-blank down into the depression b', the support yielding before it, to form an easy bend in the blank from the higher level of the shank to the lower level of the heel. As the heel end, however, is pressed nearer the bottom of the depression and the resistance increases, the spring n begins to yield, permitting the block f to yield or move upwardly in its inclined cross groove in the part A, and as it yields or moves upwardly, the inclined side Walls of the said slot or groove cause the said block to be moved forward or to theleft Fig. 2, its breast-forming shoulder f K acting to press the easy bend in the blank against the shoulder b2 in the part B to form a sharp bend or break in the blank at the breast of the heel. It will thus be seen that the blank is acted upon in two directions, rst a downward direction to depress the heel end of the blank and form an easy bend at the breast of the heel, and second a bodily movement of the two shoulders which co-operate to form the break, to- Ward each other, to sharpen the bend in the blank and form the breast of the heel. In this way the rubbing action ofthe two shoulders fx and b2 passing `one past the other, as in my previous application `referred to, is avoided, together with the ruflling or crinkling resulting therefrom, and instead thereof the break at the breast of the heel is formed by a bodily movement of the shoulders toward each other, Which forms the sharp bend without any sliding movement or friction tending to crinkle or ruffle.

I prefer to employ substantially the constructionherein shown, although it is evident that my invention is not limited in this respect, for any suitable means may be employed to give to the shoulders fX and h2 substantially the relative movement herein shown, the gist of my invention lying in forming the sharp break at the breast of the heel by a combined depressing and lateral seaseo movement, instead ofsolely by a depressing movement as at the present time.`

I claiml. ,A two-part mold for forming spring heels in and molding the soles of boots and shoes, each part `of the said mold having a sole molding surface and `one of said parts also containing a heel forming depression having a shoulder at the breast of the heel, a heel block on the other part of the said mold presenting a co-operating shoulder at the breast of `the heel, and means to impart a relative lateral movement to the said co-operating shoulders one toward the other as the two parts of the mold are brought together in the operation of molding the sole, substantially as described.

2. In a two-part spring heel forming mold, the combination with one part containing a heel-forming depression, of `a yielding block on the other of said parts,and means dependent upon yielding movement of the said yielding block to impart thereto a forward movement toward the breast oi' the heel during the molding operation, substantially as described.

3. In a twopart spring heel forming mold, the combination with one part containing a heel-forming depression, of a heel block carried by and movable relatively to the other part of said mold, and inclined guides for said heel block in the said other part, whereby a forward or lateral movement toward the breast of theheel is imparted to said block during the molding operation, substantially as described.

4. In a two-part spring heel forming mold, the combination with one part containing a heel-forming depression, and a yielding supporting table therein, of aheel block movably attached to the other part of said mold, and means to impart to said block a forward movement toward the breast of the heel during the molding operation, substantially as described.

In testimony whereof I have signed my name tothis speciication in the presence of two subscribing Witnesses.

JAMES P. BUSFIELD.

llVitnesses: FREDERICK L. EMERY, JOHN C. EDWARDS.

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