US2141998A - Method of lasting skeleton insoles - Google Patents

Description

Dec. 27, 1938.. F. MACCARONE 2,141,998

METHOD OF LASTING SKELETON INSOLES Filed March .50, 1955 INVENTOR Eva" Maccarorze WW I AT RNEYS Patented Dec. 27, 1938 UNITED STATES PATENT OFFICE Fred Maccaro: .e, Brooklyn, N. 'r Y., assigncr to The Del-Mac Shoe Process Corporation, New

York, N. Y.

Application March 30, 1935, Serial No. 13,872 2 Claims. (01. 12-142 My invention relates to shoemaking. Heretofore it has been the common practice to attach a sole member to a last by means of tacks and good shoemaking would require that a substantail number of tacks be employed to insure that the sole member conforms to the last bottom at all times during the lasting operations. However, in other respects, it is undesirable to extend a large plurality of tacks through the sole member and into the last, thereby unduly perforating the sole and pitting the last. Where iron bottomed lasts are employed the area over which the insole may be tacked is restricted by the last construction, and where skeleton-insoles are employed on wooden bottomed lasts, such area is also restricted. So far as I am aware, no means has heretofore existed by which a sole member with a skeletonized forepart could be secured to a conventional iron bottomed last.

It is the object of my invention, therefore, to provide an improvement in methods of lasting skeleton insoles to either wooden or iron last bottoms of conventionalconstruction, said method also employing a pattern for trimming away surplus upper material after lasting, and other and further objects will appear from the following specification.

Referring to the drawing which forms a part of this specification:

Figure 1 is an inverted plan view of an insole having a skeletonized forepart secured on a last in accordance with my improved method and by means of my novel device.

Figure 2 is a cross sectional view taken on line 2-2 of Figure 1.

Figure 3 is an inverted plan view of a lasted insole to which an upper has been assembled and illustrates the manner in which my device is employed as a pattern in trimming off the overlasted edges of the upper.

Figure 4 is a perspective view of my improved device.

The device employed in carrying out my improved method consists of a flat plate H1 01' stifl material, preferably metal, shaped to substantially correspond with the central ball area of a shoe, the plate being smaller than the Iorepart of the sole member to be secured so that when superimposed thereon a lasting margin of suitable width will remain. Longitudinal slots .II and I 2, respectively, are formed in the plate at or adjacent its transverse centre, and these slots are located to correspond with the usual openings round in the face of conventional metal bottomed lasts.- Transverse score lines II and I4,

respectively, intersect theslots' II and I2 and serve to position the slots in proper relation to the openings in a metal last bottom when a sole member is interposed between the last and the device. Other openingssuch as the transverse slots l5 and I6, respectively, may also be formed in the plate if desired. The slot-like apertures H, l2, l5 and I6 are of a width sufiicient to receive the shank of a lasting tack but insuiiiciently wide to admit the head of such a tack.

In carrying out my invention, a skeleton insole 35 is faced on a last 3| to which it may be secured over the shank and heel portion by a few spaced tacks, the plate I0 being positioned centrally over the forepart of the sole and secured directly to 15 the last by headed tacks 32'32 which are extended through the slots l I and I2 and through the skeletonized portion of the insole into the last. In this manner the sole member may be held down to the wood over the full area of 20 the plate by the use of only two tacks, although additional tacks may be driven through the slots l5 and I6 if desired.

I have illustrated the use of the device to secure a skeleton insole member to a last having a 25 wooden bottom but it will be obvious that such an insole may be secured in the same manner to an iron bottomed last of conventional constructions since the slots H and I2 are located to correspond with the tacking areas provided on such 30 lasts. The insole 35 has an opening in its forepart at 36 which, in the absence of the device, ,would haveto be tacked to the last around the margins of the forepart loop and because of the Weak construction of the sole over the ball por- 5 tion, it has heretofore been necessary to employ a substantial number of the objectionable tacks. Inasmuch as the openings in iron bottomed lasts are usually located within the opening of the lasted insole, it has heretofore been impractical 4 to assemble insoles of this type on such lasts, thus compelling manufacturers having iron bottomed last equipment either to acquire new lasts or to i'orego the manufacture of the popular flexible shoe typified by this type of insole. 5

As illustrated in Figure 3 after lasting the upper, the device may be usefully employed as a pattern in trimming away surplus 31' or the overlasted upper 31. I have shown the upper secured to the insole, as by cement. The trim- 50 ming operation is performed by means of a blade 38 which is drawn about the edges I0 01 the plate to cut through the upper material, whereby the surplus of the upper is neatly trimmed away.

In production, several of the devices in 612- u ferent sizes are employed but it is not essential to have a differently sized plate ior each dif- Ierent size or style oi shoe. It will also be noted that either surface of the plate It may be laced against the sole member, depending on whether the sole member is for the right or the left foot.

In use, the device has iurther utility in that it may be retained in its assembled position after the upper edges are trimmed and until after the roughing operations have been performed, serving as a shield for the insole during such roughing operations. This use is of particular advantage where skeletonized insoles such as the sole member 35 are used.

Many modifications of the device may occur to those skilled in this art, and I therefore desire to have it understood that the foregoing specification is merely illustrative of my invention as defined the appended claims.

I claim:

In streams-sing, positioning a skeleton insole on a last bottom, providing a flat plate of at!!! material shaped to correspond with the central area lying within the lasting margins of the insole i'orepart, tacking the plate directly to the last at the skeletonized area of the insole iorepart to clamp the insole tightly against the last, lasting an upper in secured relation to the insole margin'lying outwardly of the plate, and then trimming away surplus upper material about the edges of the plate, said plate serving as a pattern for the trimming operation.

2. In a method of making shoes, the steps com prising providing an insole having an aperture at its central Iorepart portion, temporarily taching a sheet of protective material to the lastmg side of said insole across said aperture and. over the adjacent insole margin bounding said aperture, lasting an upper to said insole, bottom roughing said lasted upper and thereafter removing said sheet.

FRED MACCARONE.

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